docker.com

24 hours
100.00%
7 days
100.00%
30 days
100.00%
IPv4 / IPv6
1 2
SSL Certificate
79d
Security Headers
5/6
Badges: Uptime Status
Response Time & Availability (24h)
SSL / TLS Certificate
79
days left
Valid
Apr 1, 2026 Jun 30, 2026
Issued → Expires
Subject commonName=docker.com
Issuer countryName=US, organizationName=Let's Encrypt, commonName=R12
Valid From 2026-04-01 11:24
Expires 2026-06-30 11:24
Serial Number 0613AD02DCF59B17D5489FA58D22FC235481
SHA-256 Fingerprint 92:08:56:e2:ec:08:2f:b2:14:73:b7:1b:11:d3:45:20:1f:60:1d:98:6f:fe:2a:bd:9e:3f:03:af:9b:82:77:68
Subject Alt Names docker.com www.docker.com
Last Checked 2026-04-11 22:59:32
Latest HTTP Response Details
Final URL https://www.docker.com/
Status Code 200
Response Time 56 ms
Content Size 339 KB (339.0 KB)
Content Type text/html; charset=UTF-8
Server nginx
TLS Version TLSv1.3
TLS Cipher TLS_AES_128_GCM_SHA256
Redirects 1
  1. https://docker.com/
Checked 2026-04-11 22:59:32
Security Headers 5/6
Header Status Value
Strict-Transport-Security Present max-age=31622400
Content-Security-Policy Missing
X-Frame-Options Present SAMEORIGIN
X-Content-Type-Options Present nosniff
Referrer-Policy Present strict-origin-when-cross-origin
Permissions-Policy Present geolocation=(), microphone=(), camera=(), fullscreen=(self), payment=()
DNS Intelligence (24h)
Avg Resolution
4.1 ms
Min / Max
0.8 / 9.8 ms
Record Types
7
Lookups (24h)
21
DNS Records
A
23.185.0.4
10s 0.9ms
AAAA
2620:12a:8001::4 2620:12a:8000::4
157s 0.8ms
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
3600s 4.6ms
NS
ns-1289.awsdns-33.org ns-1981.awsdns-55.co.uk ns-207.awsdns-25.com ns-568.awsdns-07.net
168148s 5.3ms
TXT
SPF (1)
v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.s… v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.zendesk.com -all
Domain Verification (27)
detectify-verification=87a64c3bf3301354588d90672bd1b74e
google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0
onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1
google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM
stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1… stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e74486ab4
airtable-verification=7f122efe7db6b16848108e469042c39c
google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M
google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08
docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8
atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe… atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+x3kyqxZRrl9z7ILEK
opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46
miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f
astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn
jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ
zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16… zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06
google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M
docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31
apple-domain-verification=S580UenDqcwy2I1X
cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd
google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s
adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7… adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791f699d128bbe6ec2
sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be
openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju
anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3
google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg
sonatype-domain-verification=OSSRH-62474
google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I
TXT Record (3)
MS=ms98031138
MS=ms42223923
d0vcwvtyam
299s 19.2ms
SOA
Primary NS
ns-207.awsdns-25.com
Admin
awsdns-hostmaster@amazon.com
Serial: 1 Refresh: 2h Retry: 15m Expire: 14d Min TTL: 1d
900s 4.9ms
CAA
Flag Tag Value
0 iodef mailto:infra+caa-iodef@docker.com
0 issue amazon.com
0 issue comodoca.com
0 issue digicert.com
0 issue letsencrypt.org
0 issue pki.goog
0 issue sectigo.com
300s 5.7ms
Email Security Posture
MX Records
SPF
Details v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.zendesk.com -all
DMARC
Details v=DMARC1; p=quarantine; pct=100; rua=mailto:q1xwnepx@ag.dmarcian.com; ruf=mailto:q1xwnepx@fr.dmarcian.com;
BIMI
MTA-STS
Strong
Overall
DNS Propagation Consistent
Resolver IPs Returned Response Time Status
Quad9 23.185.0.4 1.87ms
Google 23.185.0.4 29.88ms
AdGuard 23.185.0.4 10.43ms
OpenDNS 23.185.0.4 9.64ms
Cloudflare 23.185.0.4 3.81ms
WHOIS / Domain Registration
Registrar
Gandi SAS
Registrant Organization
Docker Inc.
Created
1995-01-25
Updated
2026-01-13
Expires
2027-01-26
Name Servers (WHOIS)
ns-1289.awsdns-33.org ns-1981.awsdns-55.co.uk ns-207.awsdns-25.com ns-568.awsdns-07.net
Domain Status
clientTransferProhibited clientTransferProhibited
DNSSEC
Unsigned
Country
US
WHOIS Last Checked
2026-04-11 22:59
Resolution Time (A/AAAA recent)
20:43 22:59
Time Type Values TTL Resolution Nameserver
22:59:29 CAA 0 iodef "mailto:infra+caa-iodef@docker.com" 0 issue "amazon.com" 0 issue "comodoca.com" 0 issue "digicert.com" 0 issue "letsencrypt.org" 0 issue "pki.goog" 0 issue "sectigo.com" 300s 5.7 ms 10.89.0.1
22:59:29 SOA ns-207.awsdns-25.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400 900s 4.9 ms 10.89.0.1
22:59:29 TXT
31 records detectify-verification=87a64c3bf3301354588d90672b…
detectify-verification=87a64c3bf3301354588d90672bd1b74e google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0 MS=ms98031138 onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1 google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e74486ab4 airtable-verification=7f122efe7db6b16848108e469042c39c google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08 docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8 atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+x3kyqxZRrl9z7ILEK opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46 miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06 google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31 apple-domain-verification=S580UenDqcwy2I1X MS=ms42223923 d0vcwvtyam cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791f699d128bbe6ec2 sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3 v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.ze… google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg sonatype-domain-verification=OSSRH-62474 google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I
299s 19.2 ms 10.89.0.1
22:59:29 NS ns-1289.awsdns-33.org ns-1981.awsdns-55.co.uk ns-207.awsdns-25.com ns-568.awsdns-07.net 168148s 5.3 ms 10.89.0.1
22:59:29 MX 1 aspmx.l.google.com 10 alt3.aspmx.l.google.com 10 alt4.aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 3600s 4.6 ms 10.89.0.1
22:59:29 AAAA 2620:12a:8001::4 2620:12a:8000::4 157s 0.8 ms 10.89.0.1
22:59:29 A 23.185.0.4 10s 0.9 ms 10.89.0.1
21:48:23 CAA 0 iodef "mailto:infra+caa-iodef@docker.com" 0 issue "amazon.com" 0 issue "comodoca.com" 0 issue "digicert.com" 0 issue "letsencrypt.org" 0 issue "pki.goog" 0 issue "sectigo.com" 300s 8.2 ms 10.89.0.1
21:48:23 SOA ns-207.awsdns-25.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400 900s 4.7 ms 10.89.0.1
21:48:23 TXT
31 records sonatype-domain-verification=OSSRH-62474
sonatype-domain-verification=OSSRH-62474 apple-domain-verification=S580UenDqcwy2I1X docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31 openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08 MS=ms42223923 zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06 stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e74486ab4 docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8 google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3 airtable-verification=7f122efe7db6b16848108e469042c39c sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0 detectify-verification=87a64c3bf3301354588d90672bd1b74e google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1 MS=ms98031138 atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+x3kyqxZRrl9z7ILEK v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.ze… jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46 google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I d0vcwvtyam adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791f699d128bbe6ec2
299s 23.3 ms 10.89.0.1
21:48:23 NS ns-568.awsdns-07.net ns-207.awsdns-25.com ns-1289.awsdns-33.org ns-1981.awsdns-55.co.uk 284s 1.2 ms 10.89.0.1
21:48:23 MX 1 aspmx.l.google.com 10 alt3.aspmx.l.google.com 10 alt4.aspmx.l.google.com 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 3600s 6.5 ms 10.89.0.1
21:48:23 AAAA 2620:12a:8001::4 2620:12a:8000::4 300s 9.8 ms 10.89.0.1
21:48:23 A 23.185.0.4 278s 3.5 ms 10.89.0.1
20:43:54 CAA 0 iodef "mailto:infra+caa-iodef@docker.com" 0 issue "amazon.com" 0 issue "comodoca.com" 0 issue "digicert.com" 0 issue "letsencrypt.org" 0 issue "pki.goog" 0 issue "sectigo.com" 300s 5.3 ms 10.89.0.1
20:43:54 SOA ns-207.awsdns-25.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400 900s 4.2 ms 10.89.0.1
20:43:54 TXT
31 records MS=ms42223923
MS=ms42223923 docker-verification=4b72827b-32c1-4fe6-a843-2256c0df8a31 anthropic-domain-verification-p1ks1q=BmUzJzzDzqNXVWLXmZVoEvTr3 miro-verification=116f0987438eb5a48c070e080a68e7d7b3087e5f apple-domain-verification=S580UenDqcwy2I1X sonatype-domain-verification=OSSRH-62474 opine-verification=14d8ea53-d8ae-406f-93b0-76dc879d9b46 atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wwsyo5dwvJe1fGjf9V+x3kyqxZRrl9z7ILEK stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5bb81ea9f1d17ed4e74486ab4 google-site-verification=i6hYWAXRYCtHNnyiQAYXiy_4StkAMJQiNCfH-3olY-I openai-domain-verification=dv-tj9VEsgExQvdNl9SCOa2Awju google-site-verification=5e33xBJIwW1XU49IqmIYtN7yi2Iq0GNnWwN4ujn4G_M google-site-verification=Nyiwo5q4kkaD5V-sEiXsW74HXyVRtKVyxYFfZuFLG7M cursor-domain-verification-pkwbtp=KD6kIrkeudCadzeviiVJgEWnd v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.salesforce.com include:mktomail.com include:mail.ze… onetrust-domain-verification=fb12882ae6344670a7b91077bd57c0f1 adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708ee20d93c7b5b04791f699d128bbe6ec2 google-site-verification=rCKOZlVmB_xuu9DiT-urSmmXAEUGn5RI8PxdyCW5LJg MS=ms98031138 astro-domain-verification=cljrj1fgz00hm01lvtaq65gnn jamf-site-verification=jqNgc5MzMp4UnSANweyyEQ detectify-verification=87a64c3bf3301354588d90672bd1b74e sinch-domain-verification=d8a66194-44cf-49c3-96ab-74325ad6e7be google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRsPGYL-I0 google-site-verification=4PyKLfy_lowkc_qcu-byUkmF1kxAUT7tfho7ZiP353s zapier-domain-verification-challenge=c3e7ddaf-20bf-40ca-9374-1a917b16be06 google-site-verification=VbuWA5NflxQMko2x9BJFIPVYrbuxHQll4UP4gZ4Fm08 google-site-verification=CFmV0geNs1hCxK0mBEpjWaDoNwBIiDxIRjTvt3YGRDM airtable-verification=7f122efe7db6b16848108e469042c39c d0vcwvtyam docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8
299s 17.3 ms 10.89.0.1
20:43:54 NS ns-207.awsdns-25.com ns-1981.awsdns-55.co.uk ns-568.awsdns-07.net ns-1289.awsdns-33.org 4229s 3.4 ms 10.89.0.1
20:43:54 MX 5 alt1.aspmx.l.google.com 5 alt2.aspmx.l.google.com 1 aspmx.l.google.com 10 alt3.aspmx.l.google.com 10 alt4.aspmx.l.google.com 629s 1.7 ms 10.89.0.1
20:43:54 AAAA 2620:12a:8001::4 2620:12a:8000::4 300s 5.5 ms 10.89.0.1
20:43:54 A 23.185.0.4 197s 4.3 ms 10.89.0.1
Open Ports 6
Open Ports
6
IPs Scanned
6
Port Protocol Service IP Address Status Latency Banner
80 TCP http 2620:12a:8001::4 Open 3.8 ms
80 TCP http 2620:12a:8000::4 Open 1.5 ms
80 TCP http 23.185.0.4 Open 3.1 ms
443 TCP https 23.185.0.4 Open 2.9 ms
443 TCP https 2620:12a:8000::4 Open 5.9 ms
443 TCP https 2620:12a:8001::4 Open 3.5 ms
Lighthouse Report
6 minutes ago
Mobile screenshot of docker.com
Mobile viewport
13
Performance
88
Accessibility
61
Best Practices
85
SEO
90–100 Good 50–89 Needs Work 0–49 Poor
Core Web Vitals: Failed
LCP
158654 ms
Poor
TBT
34064 ms
Poor
CLS
0.237
Needs Work
FCP
8735 ms
Poor
SI
24887 ms
Poor
TTFB
9 ms
Good
Score Audit Category
0
First Contentful Paint
8.7 s
performance
0
Largest Contentful Paint
158.7 s
performance
0
Speed Index
24.9 s
performance
0
Total Blocking Time
34,060 ms
performance
0
Max Potential First Input Delay
3,530 ms
performance
0
Time to Interactive
183.4 s
performance
0
Avoid multiple page redirects
Est savings of 790 ms
performance
0
Uses deprecated APIs
2 warnings found
best-practices
0
Uses third-party cookies
27 cookies found
best-practices
0
Minimize main-thread work
94.0 s
performance
0
Reduce JavaScript execution time
64.4 s
performance
0
Preconnect to required origins
Est savings of 350 ms
performance
0
Reduce the impact of third-party code
Third-party code blocked the main thread for 50,330 ms
performance
0
Some third-party resources can be lazy loaded with a facade
1 facade alternative available
performance
0
Largest Contentful Paint element
158,650 ms
performance
0
Avoid large layout shifts
4 layout shifts found
performance
0
Background and foreground colors do not have a sufficient contrast ratio.
accessibility
0
Heading elements are not in a sequentially-descending order
accessibility
0
Links do not have a discernible name
accessibility
0
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
accessibility
0
Defer offscreen images
Est savings of 28,154 KiB
performance
0
Eliminate render-blocking resources
Est savings of 5,320 ms
performance
0
Reduce unused JavaScript
Est savings of 1,111 KiB
performance
0
Use video formats for animated content
Est savings of 31,503 KiB
performance
0
Avoid an excessive DOM size
1,434 elements
performance
0
Issues were logged in the `Issues` panel in Chrome Devtools
best-practices
0
Links do not have descriptive text
1 link found
seo
0
Links are not crawlable
seo
0
Page prevented back/forward cache restoration
1 failure reason
performance
0
Use efficient cache lifetimes
Est savings of 860 KiB
performance
0
Layout shift culprits
performance
0
Document request latency
Est savings of 50 ms
performance
0
Font display
Est savings of 430 ms
performance
0
Forced reflow
performance
0
LCP request discovery
performance
0
Network dependency tree
performance
0
Render blocking requests
Est savings of 5,310 ms
performance
50
Ensure text remains visible during webfont load
performance
50
Image elements do not have explicit `width` and `height`
performance
50
Serve static assets with an efficient cache policy
38 resources found
performance
50
Avoid enormous network payloads
Total size was 47,750 KiB
performance
50
Reduce unused CSS
Est savings of 30 KiB
performance
50
Serve images in next-gen formats
Est savings of 13 KiB
performance
50
Enable text compression
Est savings of 140 KiB
performance
50
Properly size images
Est savings of 34 KiB
performance
50
Remove duplicate modules in JavaScript bundles
Est savings of 191 KiB
performance
50
Avoid serving legacy JavaScript to modern browsers
Est savings of 43 KiB
performance
50
Duplicated JavaScript
Est savings of 77 KiB
performance
50
Improve image delivery
Est savings of 25 KiB
performance
50
Legacy JavaScript
Est savings of 59 KiB
performance
52
Cumulative Layout Shift
0.237
performance
Desktop screenshot of docker.com
Desktop viewport
30
Performance
88
Accessibility
59
Best Practices
85
SEO
90–100 Good 50–89 Needs Work 0–49 Poor
Core Web Vitals: Failed
LCP
25608 ms
Poor
TBT
4435 ms
Poor
CLS
0.029
Good
FCP
1640 ms
Good
SI
7023 ms
Poor
TTFB
10 ms
Good
Score Audit Category
0
Largest Contentful Paint
25.6 s
performance
0
Speed Index
7.0 s
performance
0
Total Blocking Time
4,430 ms
performance
0
Time to Interactive
30.7 s
performance
0
Avoid multiple page redirects
Est savings of 250 ms
performance
0
Uses deprecated APIs
2 warnings found
best-practices
0
Uses third-party cookies
28 cookies found
best-practices
0
Minimize main-thread work
20.1 s
performance
0
Reduce JavaScript execution time
12.7 s
performance
0
Preconnect to required origins
Est savings of 200 ms
performance
0
Reduce the impact of third-party code
Third-party code blocked the main thread for 6,710 ms
performance
0
Some third-party resources can be lazy loaded with a facade
1 facade alternative available
performance
0
Largest Contentful Paint element
25,610 ms
performance
0
Background and foreground colors do not have a sufficient contrast ratio.
accessibility
0
Heading elements are not in a sequentially-descending order
accessibility
0
Links do not have a discernible name
accessibility
0
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
accessibility
0
Defer offscreen images
Est savings of 28,057 KiB
performance
0
Eliminate render-blocking resources
Est savings of 770 ms
performance
0
Reduce unused JavaScript
Est savings of 1,060 KiB
performance
0
Use video formats for animated content
Est savings of 31,503 KiB
performance
0
Avoid an excessive DOM size
1,434 elements
performance
0
Issues were logged in the `Issues` panel in Chrome Devtools
best-practices
0
Links do not have descriptive text
1 link found
seo
0
Links are not crawlable
seo
0
Page prevented back/forward cache restoration
1 failure reason
performance
0
Use efficient cache lifetimes
Est savings of 861 KiB
performance
0
Document request latency
Est savings of 30 ms
performance
0
Font display
Est savings of 230 ms
performance
0
Forced reflow
performance
0
LCP request discovery
performance
0
Legacy JavaScript
Est savings of 59 KiB
performance
0
Network dependency tree
performance
0
Render blocking requests
Est savings of 850 ms
performance
1
Max Potential First Input Delay
820 ms
performance
47
First Contentful Paint
1.6 s
performance
50
Ensure text remains visible during webfont load
performance
50
Image elements do not have explicit `width` and `height`
performance
50
Serve static assets with an efficient cache policy
39 resources found
performance
50
Avoid enormous network payloads
Total size was 51,684 KiB
performance
50
Reduce unused CSS
Est savings of 30 KiB
performance
50
Serve images in next-gen formats
Est savings of 13 KiB
performance
50
Enable text compression
Est savings of 140 KiB
performance
50
Properly size images
Est savings of 32 KiB
performance
50
Remove duplicate modules in JavaScript bundles
Est savings of 190 KiB
performance
50
Avoid serving legacy JavaScript to modern browsers
Est savings of 37 KiB
performance
50
Duplicated JavaScript
Est savings of 77 KiB
performance
Technology Stack 32 detected
HTTP/2
HTTP/3 (QUIC)
32
Technologies
Analytics 1
Google Tag Manager
70%
GTM script
CDN 1
Fastly
90%
X-Served-By header
CMS 1
WordPress v6.9
70%
wp-includes directory
CRM 1
Salesforce
85%
TXT verification: v=spf1 include:_spf.google.com include:spf.tipalti.com includ…
Cache 1
Varnish v1.1
90%
Via header
DNS 1
AWS Route 53
85%
NS record: ns-1289.awsdns-33.org
Email 2
Google Workspace
85%
MX record: 1 aspmx.l.google.com
SPF Record
85%
TXT SPF: v=spf1 include:_spf.google.com include:spf.tipalti.com include:_spf.sa…
Hosting 1
Pantheon
90%
X-Pantheon header
Library 2
jQuery
70%
jQuery script
jQuery Migrate
70%
jQuery Migrate
Monitoring 1
New Relic
70%
New Relic script
SEO 3
JSON-LD
70%
JSON-LD structured data
Rank Math
70%
Rank Math SEO
Schema.org Markup
70%
Schema.org structured data
Security 6
HSTS
90%
HSTS header present
Permissions-Policy
90%
Permissions-Policy present
Referrer-Policy
90%
Referrer-Policy present
X-Content-Type-Options
90%
nosniff header
X-Frame-Options
90%
Security header present
X-XSS-Protection
90%
XSS protection header
Server 1
Nginx
90%
Server header
Social 2
Open Graph
70%
Open Graph meta tags
Twitter Cards
70%
Twitter Card meta
Support 1
Zendesk
85%
TXT verification: v=spf1 include:_spf.google.com include:spf.tipalti.com includ…
Verification 7
Adobe
85%
TXT verification: adobe-idp-site-verification=a8d1a71d0cba44c2521bcb451d9dc708e…
Apple
85%
TXT verification: apple-domain-verification=S580UenDqcwy2I1X
Atlassian
85%
TXT verification: atlassian-domain-verification=I1f5bgOm9sPUEcK/2JTD6weNlWt+Wws…
DocuSign
85%
TXT verification: docusign=aeb25cd4-f743-4efc-b6fb-b8bc5dd1d0e8
Google Search Console
85%
TXT verification: google-site-verification=GjEZ_3KyjpDbmRzGdMUtqMeuXdh7HCSc8uRs…
Microsoft 365
85%
TXT verification: MS=ms98031138
Stripe
85%
TXT verification: stripe-verification=804359af3a919b4a46343227e384abdf33e10ad5b…
Crawl Configuration
robots.txt Sitemap · 15 URLs
robots.txt 24 disallow · 2 allow · 1 agent
User-Agent Directive Path / Value
* Allow /wp-admin/admin-ajax.php
* Disallow /wp-admin/
* Disallow /pricing/contact-sales/bss-cc-thankyou/
* Disallow /pricing/contact-sales/bss-thankyou/
* Disallow /company/contact-thank-you/
* Disallow /thank-you-subscribing-docker-weekly/
* Disallow /pricing/contact-sales2/
* Disallow /cdn-cgi/
* Disallow /static/
* Disallow /c/
* Disallow /p/
* Disallow /products/telepresence-for-docker/thank-you/
* Disallow /style-guide/
* Disallow /search/
* Allow /ja-jp/wp-admin/admin-ajax.php
* Disallow /ja-jp/wp-admin/
* Disallow /ja-jp/pricing/contact-sales/bss-cc-thankyou/
* Disallow /ja-jp/pricing/contact-sales/bss-thankyou/
* Disallow /ja-jp/company/contact-thank-you/
* Disallow /ja-jp/thank-you-subscribing-docker-weekly/
* Disallow /ja-jp/pricing/contact-sales2/
* Disallow /ja-jp/cdn-cgi/
* Disallow /ja-jp/static/
* Disallow /ja-jp/c/
* Disallow /ja-jp/products/telepresence-for-docker/thank-you/
* Disallow /ja-jp/style-guide/
* Sitemap https://www.docker.com/sitemap_index.xml
* Sitemap https://www.docker.com/ja-jp/sitemap_index.xml
User-agent: *
Allow: /wp-admin/admin-ajax.php
Disallow: /wp-admin/
Disallow: /pricing/contact-sales/bss-cc-thankyou/
Disallow: /pricing/contact-sales/bss-thankyou/
Disallow: /company/contact-thank-you/
Disallow: /thank-you-subscribing-docker-weekly/
Disallow: /pricing/contact-sales2/
Disallow: /cdn-cgi/
Disallow: /static/
Disallow: /c/
Disallow: /p/
Disallow: /products/telepresence-for-docker/thank-you/
Disallow: /style-guide/
Disallow: /search/

Allow: /ja-jp/wp-admin/admin-ajax.php
Disallow: /ja-jp/wp-admin/
Disallow: /ja-jp/pricing/contact-sales/bss-cc-thankyou/
Disallow: /ja-jp/pricing/contact-sales/bss-thankyou/
Disallow: /ja-jp/company/contact-thank-you/
Disallow: /ja-jp/thank-you-subscribing-docker-weekly/
Disallow: /ja-jp/pricing/contact-sales2/
Disallow: /ja-jp/cdn-cgi/
Disallow: /ja-jp/static/
Disallow: /ja-jp/c/
Disallow: /ja-jp/products/telepresence-for-docker/thank-you/
Disallow: /ja-jp/style-guide/


Sitemap: https://www.docker.com/sitemap_index.xml
Sitemap: https://www.docker.com/ja-jp/sitemap_index.xml
Sitemap
Sitemap Accessible
Index
Active IP Addresses
IP Address Version Reverse DNS CIDR Country City ASN First Seen Last DNS Hits Misses Uptime % Avg Latency
2620:12a:8000::4 IPv6 2620:12a:8000::/48 US AS54113 Fastly, Inc. 2026-04-11 20:43 2026-04-11 22:59 3 0 100.0% 2.2 ms
2620:12a:8001::4 IPv6 2620:12a:8001::/48 US AS54113 Fastly, Inc. 2026-04-11 20:43 2026-04-11 22:59 3 0 100.0% 1.7 ms
23.185.0.4 IPv4 23.185.0.0/24 US AS54113 Fastly, Inc. 2026-04-11 20:43 2026-04-11 22:59 3 0 100.0% 2.0 ms
Discovered Sub-domains 213
Wordlist Brute-force 28 Certificate Transparency 184 Link Scan 1

1. admin.docker.com
2. api.docker.com
3. app.docker.com
4. auth.docker.com
5. beta.docker.com
6. blog.docker.com
7. build.docker.com
8. checkout.docker.com
9. ci.docker.com
10. cloud.docker.com
11. dash.docker.com
12. docs.docker.com
13. download.docker.com
14. events.docker.com
15. firewall.docker.com
16. go.docker.com
17. gw.docker.com
18. hub.docker.com
19. id.docker.com
20. login.docker.com
21. mail.docker.com
22. notify.docker.com
23. registry.docker.com
24. status.docker.com
25. store.docker.com
26. test.docker.com
27. web.docker.com
28. www.docker.com

ahoy.docker.com 4 minutes ago
api-new.build-cloud-stage.docker.com 4 minutes ago
api.build-cloud-stage.docker.com 4 minutes ago
api.build-cloud.docker.com 4 minutes ago
api.dso-stage.docker.com 4 minutes ago
api.dso.docker.com 4 minutes ago
api.labs.docker.com 4 minutes ago
api.offload.docker.com 4 minutes ago
api.production.platform.docker.com 4 minutes ago
api.projects.sandbox.platform.docker.com 4 minutes ago
api.projects.staging.platform.docker.com 4 minutes ago
api.sandbox.platform.docker.com 4 minutes ago
api.scout-stage.docker.com 4 minutes ago
api.scout.docker.com 4 minutes ago
api.staging.offload.docker.com 4 minutes ago
api.staging.platform.docker.com 4 minutes ago
auth-stage.docker.com 4 minutes ago
aws-eu-west-1.data-plane.build-cloud-stage.docker.com 4 minutes ago
aws-eu-west-1.data-plane.build-cloud.docker.com 4 minutes ago
aws-us-east-1.data-plane.build-cloud-stage.docker.com 4 minutes ago
aws-us-east-1.data-plane.build-cloud.docker.com 4 minutes ago
beta-stage.docker.com 4 minutes ago
beta.docs.docker.com 4 minutes ago
blog-stage.docker.com 4 minutes ago
brain.cloud-build.production.platform.docker.com 4 minutes ago
brain.cloud-build.sandbox.platform.docker.com 4 minutes ago
brain.cloud-build.staging.platform.docker.com 4 minutes ago
build-cloud-stage.docker.com 4 minutes ago
build-cloud.docker.com 4 minutes ago
buy-stage.docker.com 4 minutes ago
bws-use2-a.staging.offload.docker.com 4 minutes ago
ci-next.docker.com 4 minutes ago
cilium-test.harmonia.docker.com 4 minutes ago
cloud-stage.docker.com 4 minutes ago
community.docker.com 4 minutes ago
control.uc-control-use2-a.canary.uc.docker.com 4 minutes ago
control.ucs-control-use2-b.staging.uc.docker.com 4 minutes ago
cool-dawn.bulbasur.sandbox.platform.docker.com 4 minutes ago
credentials.docker.com 4 minutes ago
dev.labs.docker.com 4 minutes ago
dev.learn.docker.com 4 minutes ago
dhi-stage.docker.com 4 minutes ago
dhi.docker.com 4 minutes ago
divine-water.foo.sandbox.platform.docker.com 4 minutes ago
divine-water.testing-new-bootstrap.sandbox.platform.docker.com 4 minutes ago
dockercon.docker.com 4 minutes ago
docs-labs.docker.com 4 minutes ago
docs-stage.docker.com 4 minutes ago
docs-stage2.docker.com 4 minutes ago
docs-test.docker.com 4 minutes ago
docs2.docker.com 4 minutes ago
dso-api-stage.docker.com 4 minutes ago
dso-api.docker.com 4 minutes ago
dso-skills-stage.docker.com 4 minutes ago
dso-skills.docker.com 4 minutes ago
dso-stage.docker.com 4 minutes ago
dso.docker.com 4 minutes ago
em.docker.com 4 minutes ago
email.docker.com 4 minutes ago
email.notify-stage.docker.com 4 minutes ago
email.notify.docker.com 4 minutes ago
enterprise.docker.com 4 minutes ago
eu-west-1.data-plane.build-cloud-stage.docker.com 4 minutes ago
eu-west-1.data-plane.build-cloud.docker.com 4 minutes ago
eu-west-1.dataplane.build-cloud-stage.docker.com 4 minutes ago
eu-west-2.harmonia.docker.com 4 minutes ago
experimental.docker.com 4 minutes ago
f1.success.docker.com 4 minutes ago
flappy-dock.flappy-dock.sandbox.platform.docker.com 4 minutes ago
flappy-dock.flappy-dock.staging.platform.docker.com 4 minutes ago
forums-dev.docker.com 4 minutes ago
forums-stage.docker.com 4 minutes ago
forums.docker.com 4 minutes ago
get.docker.com 4 minutes ago
golang.docker.com 4 minutes ago
gondolier-alpha-users.docker.com 4 minutes ago
gondolier-alpha.docker.com 4 minutes ago
goto.docker.com 4 minutes ago
harmonia-alpha-users.docker.com 4 minutes ago
harmonia-alpha.docker.com 4 minutes ago
harmonia-beta-users.docker.com 4 minutes ago
harmonia-beta.docker.com 4 minutes ago
hello-world.hello-world.staging.platform.docker.com 4 minutes ago
hello.docker.com 4 minutes ago
hub-beta.docker.com 4 minutes ago
hub-stage.docker.com 4 minutes ago
interlock.docs.docker.com 4 minutes ago
internal.offload.docker.com 4 minutes ago
internal.staging.offload.docker.com 4 minutes ago
jlwhale.jlwhale.sandbox.platform.docker.com 4 minutes ago
jlwhaleservice.jlwhaleapp.sandbox.platform.docker.com 4 minutes ago
jlwhaleservice2.jlwhaleapp.sandbox.platform.docker.com 4 minutes ago
jlwhaleservice4.jlwhaleapp4.sandbox.platform.docker.com 4 minutes ago
karpenter-test.harmonia.docker.com 4 minutes ago
labs.docker.com 4 minutes ago
learn.docker.com 4 minutes ago
license-staging.enterprise.docker.com 4 minutes ago
license.enterprise.docker.com 4 minutes ago
login-dev.docker.com 4 minutes ago
login-stage.docker.com 4 minutes ago
long-glade.squirtle.sandbox.platform.docker.com 4 minutes ago
mariner.docker.com 4 minutes ago
mega-new-service.mikhail-mar-4-test.sandbox.platform.docker.com 4 minutes ago
mega-new-service.mikhail-mar-5-test.sandbox.platform.docker.com 4 minutes ago
mega-new-service.mikhail-new-status-test.sandbox.platform.docker.com 4 minutes ago
mikhail-service.mikhail-test-app.sandbox.platform.docker.com 4 minutes ago
mock-garant.cloud-build-mocks.sandbox.platform.docker.com 4 minutes ago
my-service.mikhail-test-demo-1.sandbox.platform.docker.com 4 minutes ago
my-service.mikhail-test-demo-2.sandbox.platform.docker.com 4 minutes ago
new-service.mikhail-new-status-test.sandbox.platform.docker.com 4 minutes ago
new-service.mikhail-status-test.sandbox.platform.docker.com 4 minutes ago
nezdolikservice.nezdolikapp.sandbox.platform.docker.com 4 minutes ago
nezdolikservice.nezdolikapp1.sandbox.platform.docker.com 4 minutes ago
nginx-deployment.tthede-test.sandbox.platform.docker.com 4 minutes ago
nginx.awg-cert-test-2.sandbox.platform.docker.com 4 minutes ago
nginx.awg-cert-test.sandbox.platform.docker.com 4 minutes ago
nginx.tls-test-7-march.sandbox.platform.docker.com 4 minutes ago
noop-web-stage-canary.docker.com 4 minutes ago
onepasswordscim.docker.com 4 minutes ago
original-service.mikhail-new-status-test.sandbox.platform.docker.com 4 minutes ago
original-service.mikhail-status-test.sandbox.platform.docker.com 4 minutes ago
partners.docker.com 4 minutes ago
platform.docker.com 4 minutes ago
playground.scout.docker.com 4 minutes ago
preferences.docker.com 4 minutes ago
production.cloudflare.docker.com 4 minutes ago
project-api.projects.sandbox.platform.docker.com 4 minutes ago
registry.scout-stage.docker.com 4 minutes ago
registry.scout.docker.com 4 minutes ago
rego.scout.docker.com 4 minutes ago
rod.cam.docker.com 4 minutes ago
salescentral.docker.com 4 minutes ago
sandbox.platform.docker.com 4 minutes ago
server.javier-test-1.sandbox.platform.docker.com 4 minutes ago
service.charmander.sandbox.platform.docker.com 4 minutes ago
service.fix-role-name-gen-2.sandbox.platform.docker.com 4 minutes ago
service.fix-role-name-generation.sandbox.platform.docker.com 4 minutes ago
service.foodilio.sandbox.platform.docker.com 4 minutes ago
service.javier-72.sandbox.platform.docker.com 4 minutes ago
service.javier-test-2.sandbox.platform.docker.com 4 minutes ago
service.javier-test-3.sandbox.platform.docker.com 4 minutes ago
service.pairing-with-alyx.sandbox.platform.docker.com 4 minutes ago
service.zeus-go-app.sandbox.platform.docker.com 4 minutes ago
sfdc-stage.docker.com 4 minutes ago
sfdc.docker.com 4 minutes ago
shiphappens.docker.com 4 minutes ago
skills.dso-stage.docker.com 4 minutes ago
skills.dso.docker.com 4 minutes ago
sparkling-shape.charmeleon.sandbox.platform.docker.com 4 minutes ago
stage-west.harmonia.docker.com 4 minutes ago
stage.harmonia.docker.com 4 minutes ago
staging.cloudflare.docker.com 4 minutes ago
storebits-stage.docker.com 4 minutes ago
storebits.docker.com 4 minutes ago
studio.dev.learn.docker.com 4 minutes ago
studio.learn.docker.com 4 minutes ago
success-dev.docker.com 4 minutes ago
success-stage.docker.com 4 minutes ago
success.docker.com 4 minutes ago
support.docker.com 4 minutes ago
swag.docker.com 4 minutes ago
tcc.offload.docker.com 4 minutes ago
training.docker.com 4 minutes ago
tutum.docker.com 4 minutes ago
ultra-new-service.mikhail-new-status-test.sandbox.platform.docker.com 4 minutes ago
ultra-new-service.mikhail-status-test.sandbox.platform.docker.com 4 minutes ago
us-east-1.harmonia.docker.com 4 minutes ago
web-server.hello-world.sandbox.platform.docker.com 4 minutes ago
web-server.hello-world.staging.platform.docker.com 4 minutes ago
webbie-server.lizzs-hello-world.sandbox.platform.docker.com 4 minutes ago
webbie-server.lizzs-hello-world.staging.platform.docker.com 4 minutes ago
whale-web.hello-world-whale.sandbox.platform.docker.com 4 minutes ago
whale-web.hello-world-whale.staging.platform.docker.com 4 minutes ago
www-dev.docker.com 4 minutes ago
www-stage.docker.com 4 minutes ago
www.ahoy.docker.com 4 minutes ago
www.blog.docker.com 4 minutes ago
www.buy-stage.docker.com 4 minutes ago
www.community.docker.com 4 minutes ago
www.dockercon.docker.com 4 minutes ago
www.events.docker.com 4 minutes ago
www.get.docker.com 4 minutes ago
www.go.docker.com 4 minutes ago
www.goto.docker.com 4 minutes ago

Recent HTTP Checks (24 h)
Total Checks
3
Success Rate
100%
Avg Response
52 ms
Min / Max
40 / 58 ms
Recent Checks
20:43 22:59
Time Status Code Response Agent Error
22:59:32 UP 200 56 ms prod-local
21:48:26 UP 200 58 ms prod-local
20:43:57 UP 200 40 ms prod-local
Incident History

No incidents recorded — all clear!