jekyllrb.com A+

24 hours
100.00%
7 days
100.00%
30 days
100.00%
IPv4 / IPv6
7 4
SSL Certificate
61d
Security Headers
0/6
Status Badges
Status Uptime 30d Uptime 7d Response Time SSL Performance Accessibility SEO Security Headers Uptime 24h Incidents IPv4/IPv6
Click any snippet to copy. Use Markdown for GitHub READMEs, HTML for websites.
Badge Markdown HTML
Status [![Status](https://updown.website/badge/jekyllrb.com/status.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/status.svg" alt="Status"></a>
Uptime [![Uptime](https://updown.website/badge/jekyllrb.com/uptime.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/uptime.svg" alt="Uptime"></a>
Response Time [![Response Time](https://updown.website/badge/jekyllrb.com/response-time.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/response-time.svg" alt="Response Time"></a>
SSL [![SSL](https://updown.website/badge/jekyllrb.com/ssl.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/ssl.svg" alt="SSL"></a>
Performance [![Performance](https://updown.website/badge/jekyllrb.com/cwv.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/cwv.svg" alt="Performance"></a>
Accessibility [![Accessibility](https://updown.website/badge/jekyllrb.com/cwv.svg?category=accessibility)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/cwv.svg?category=accessibility" alt="Accessibility"></a>
SEO [![SEO](https://updown.website/badge/jekyllrb.com/cwv.svg?category=seo)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/cwv.svg?category=seo" alt="SEO"></a>
Security Headers [![Security Headers](https://updown.website/badge/jekyllrb.com/security-headers.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/security-headers.svg" alt="Security Headers"></a>
Uptime 24h [![Uptime 24h](https://updown.website/badge/jekyllrb.com/uptime.svg?period=24h)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/uptime.svg?period=24h" alt="Uptime 24h"></a>
Incidents [![Incidents](https://updown.website/badge/jekyllrb.com/incidents.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/incidents.svg" alt="Incidents"></a>
IPv4/IPv6 [![IPv4/IPv6](https://updown.website/badge/jekyllrb.com/ipv46.svg)](https://updown.website/site/jekyllrb.com/) <a href="https://updown.website/site/jekyllrb.com/"><img src="https://updown.website/badge/jekyllrb.com/ipv46.svg" alt="IPv4/IPv6"></a>
Site Health (24 h)
HTTP Response DNS Lookup Ping Up Down Reports Incident
Monitoring
Recent HTTP Checks (24 h)
Total Checks
8
Success Rate
100%
Avg Response
48 ms
Min / Max
40 / 58 ms
Recent Checks
16:07 09:25
Time Status Code Response Agent Error
09:25:58 UP 200 53 ms prod-local —
07:04:12 UP 200 40 ms prod-local —
05:03:53 UP 200 46 ms prod-local —
01:56:52 UP 200 49 ms prod-local —
00:52:35 UP 200 44 ms prod-local —
21:57:15 UP 200 42 ms prod-local —
17:17:47 UP 200 58 ms prod-local —
16:07:20 UP 200 52 ms prod-local —
Incident History

No incidents recorded — all clear!

Community
0
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Mail Server (SMTP) Checks
3 checked
Status MX Host Port IP EHLO STARTTLS TLS Works TLS Ver Open Relay Auth Reverse DNS Banner Latency Checked
mxb.mailgun.org 25 34.160.157.95 — — — — — 10002.8 ms 1 day, 16 hours ago
mxb.mailgun.org 465 34.160.157.95 — — — — — 13.5 ms 1 day, 16 hours ago
mxb.mailgun.org 587 34.160.157.95 TLSv1.3 — PLAIN LOGIN 95.157.160.34.bc.googleuserco… 220 Mailgun Influx ready 12.6 ms 1 day, 16 hours ago
Service Checks (Banner Grab)
4 up 1 down
Status Port Service Version IP Banner Latency Checked
80 http GitHub.com 2606:50c0:8000::153 HTTP/1.1 200 OK Connection: close Content-Length: 10374 Server: GitHub.com … 1.9 ms 2 hours, 28 minutes ago
443 https — 2606:50c0:8000::153 — 502.9 ms 2 hours, 28 minutes ago
Security
SSL / TLS Certificate
61
days left
Valid
Mar 24, 2026 Jun 22, 2026
Issued → Expires
Subject commonName=jekyllrb.com
Issuer countryName=US, organizationName=Let's Encrypt, commonName=R13
Valid From 2026-03-24 14:19
Expires 2026-06-22 14:19
Serial Number 05310BB2357517E7FE10579F50AC4B000B6A
SHA-256 Fingerprint 16:ad:22:35:0d:31:39:41:9f:cf:64:03:cd:b5:29:06:b3:92:83:25:cc:be:70:cf:f7:3e:4b:9c:8d:f6:8b:af
Subject Alt Names jekyllrb.com
Last Checked 2026-04-22 09:25:58
Latest HTTP Response Details
Final URL https://jekyllrb.com/
Status Code 200
Response Time 53 ms
Content Size 10 KB (10.1 KB)
Content Type text/html; charset=utf-8
Server GitHub.com
TLS Version TLSv1.3
TLS Cipher TLS_AES_128_GCM_SHA256
Redirects 0
Checked 2026-04-22 09:25:58
Security Headers 0/6
Header Status Value
Strict-Transport-Security Missing —
Content-Security-Policy Missing —
X-Frame-Options Missing —
X-Content-Type-Options Missing —
Referrer-Policy Missing —
Permissions-Policy Missing —
Email Security Posture
MX Records
SPF
Details v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.discourse.org ~all
DMARC
BIMI
MTA-STS
Partial
Overall
DNS & Network
DNS Intelligence (24h)
Avg Resolution
21.8 ms
Min / Max
8.4 / 31.5 ms
Record Types
7
Lookups (24h)
80
DNS Records
A
185.199.109.153 185.199.110.153 185.199.111.153 185.199.108.153
386s 18.9ms
AAAA
2606:50c0:8002::153 2606:50c0:8000::153 2606:50c0:8001::153 2606:50c0:8003::153
600s 28.4ms
MX
10 mxa.mailgun.org
10 mxb.mailgun.org
600s 4.6ms
NS
dahlia.ns.cloudflare.com earl.ns.cloudflare.com
86400s 20.8ms
TXT
SPF (1)
v=spf1 include:spf.messagingengine.com include:mailgun.org include:_h… v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.discourse.org ~all
600s 14.0ms
SOA
Primary NS
dahlia.ns.cloudflare.com
Admin
dns@cloudflare.com
Serial: 2401585409 Refresh: 2h Retry: 40m Expire: 7d Min TTL: 30m
1800s 5.1ms
PTR
cdn-185-199-111-153.github.com
2754s 0.7ms
DNS Propagation Consistent
Resolver IPs Returned Response Time Status
Quad9 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 76.99ms
Google 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 22.86ms
AdGuard 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 36.74ms
OpenDNS 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 39.52ms
Cloudflare 185.199.108.153 185.199.109.153 185.199.110.153 185.199.111.153 6.53ms
WHOIS / Domain Registration
Registrar
NameCheap, Inc.
Registrant Organization
Redacted for Privacy Purposes
Created
2009-04-28
Updated
2026-03-29
Expires
2027-04-28
Name Servers (WHOIS)
dahlia.ns.cloudflare.com earl.ns.cloudflare.com
Domain Status
clientTransferProhibited
DNSSEC
Unsigned
Country
US
WHOIS Last Checked
2026-04-20 19:00
Resolution Time (A/AAAA recent)
00:52 09:25
Time Type Values TTL Resolution Nameserver
09:25:58 PTR 185.199.111.153 2754s 0.7 ms —
09:25:58 PTR 185.199.110.153 3459s 0.7 ms —
09:25:58 PTR 185.199.109.153 2610s 0.7 ms —
09:25:58 PTR 185.199.108.153 1763s 0.7 ms —
09:25:58 SOA dahlia.ns.cloudflare.com dns.cloudflare.com 2401585409 10000 2400 604800 1800 1800s 5.1 ms 10.89.0.1
09:25:58 TXT v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.d… 600s 14.0 ms 10.89.0.1
09:25:58 NS dahlia.ns.cloudflare.com earl.ns.cloudflare.com 86400s 20.8 ms 10.89.0.1
09:25:58 MX 10 mxa.mailgun.org 10 mxb.mailgun.org 600s 4.6 ms 10.89.0.1
09:25:58 AAAA 2606:50c0:8002::153 2606:50c0:8000::153 2606:50c0:8001::153 2606:50c0:8003::153 600s 28.4 ms 10.89.0.1
09:25:58 A 185.199.109.153 185.199.110.153 185.199.111.153 185.199.108.153 386s 18.9 ms 10.89.0.1
07:04:11 PTR 185.199.111.153 2383s 1.2 ms —
07:04:11 PTR 185.199.110.153 3480s 1.3 ms —
07:04:11 PTR 185.199.109.153 1956s 1.0 ms —
07:04:11 PTR 185.199.108.153 2383s 0.8 ms —
07:04:11 SOA dahlia.ns.cloudflare.com dns.cloudflare.com 2401585409 10000 2400 604800 1800 1800s 4.7 ms 10.89.0.1
07:04:11 TXT v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.d… 600s 6.6 ms 10.89.0.1
07:04:11 NS dahlia.ns.cloudflare.com earl.ns.cloudflare.com 86400s 6.3 ms 10.89.0.1
07:04:11 MX 10 mxa.mailgun.org 10 mxb.mailgun.org 600s 15.1 ms 10.89.0.1
07:04:11 AAAA 2606:50c0:8001::153 2606:50c0:8000::153 2606:50c0:8002::153 2606:50c0:8003::153 600s 30.7 ms 10.89.0.1
07:04:11 A 185.199.108.153 185.199.111.153 185.199.109.153 185.199.110.153 600s 15.8 ms 10.89.0.1
05:03:53 PTR 185.199.111.153 866s 0.9 ms —
05:03:53 PTR 185.199.110.153 861s 1.5 ms —
05:03:53 PTR 185.199.109.153 1695s 0.9 ms —
05:03:53 PTR 185.199.108.153 1514s 0.8 ms —
05:03:53 SOA dahlia.ns.cloudflare.com dns.cloudflare.com 2401585409 10000 2400 604800 1800 1800s 21.5 ms 10.89.0.1
05:03:53 TXT v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.d… 600s 4.3 ms 10.89.0.1
05:03:53 NS dahlia.ns.cloudflare.com earl.ns.cloudflare.com 86400s 4.3 ms 10.89.0.1
05:03:53 MX 10 mxa.mailgun.org 10 mxb.mailgun.org 600s 6.5 ms 10.89.0.1
05:03:53 AAAA 2606:50c0:8003::153 2606:50c0:8002::153 2606:50c0:8000::153 2606:50c0:8001::153 600s 8.4 ms 10.89.0.1
05:03:53 A 185.199.108.153 185.199.110.153 185.199.111.153 185.199.109.153 600s 20.0 ms 10.89.0.1
01:56:52 PTR 185.199.111.153 582s 1.0 ms —
01:56:52 PTR 185.199.110.153 1919s 0.7 ms —
01:56:52 PTR 185.199.109.153 846s 0.8 ms —
01:56:52 PTR 185.199.108.153 3356s 14.0 ms —
01:56:52 SOA dahlia.ns.cloudflare.com dns.cloudflare.com 2401585409 10000 2400 604800 1800 1800s 18.7 ms 10.89.0.1
01:56:52 TXT v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.d… 600s 18.8 ms 10.89.0.1
01:56:52 NS dahlia.ns.cloudflare.com earl.ns.cloudflare.com 21600s 24.6 ms 10.89.0.1
01:56:52 MX 10 mxa.mailgun.org 10 mxb.mailgun.org 600s 23.2 ms 10.89.0.1
01:56:52 AAAA 2606:50c0:8000::153 2606:50c0:8003::153 2606:50c0:8002::153 2606:50c0:8001::153 600s 31.5 ms 10.89.0.1
01:56:52 A 185.199.108.153 185.199.109.153 185.199.111.153 185.199.110.153 600s 25.7 ms 10.89.0.1
00:52:34 PTR 185.199.111.153 2161s 4.0 ms —
00:52:34 PTR 185.199.110.153 1778s 4.1 ms —
00:52:34 PTR 185.199.109.153 2364s 4.6 ms —
00:52:34 PTR 185.199.108.153 2231s 5.1 ms —
00:52:34 SOA dahlia.ns.cloudflare.com dns.cloudflare.com 2401585409 10000 2400 604800 1800 1800s 5.6 ms 10.89.0.1
00:52:34 TXT v=spf1 include:spf.messagingengine.com include:mailgun.org include:_hostedspf.d… 600s 5.2 ms 10.89.0.1
00:52:34 NS dahlia.ns.cloudflare.com earl.ns.cloudflare.com 86400s 4.9 ms 10.89.0.1
00:52:34 MX 10 mxa.mailgun.org 10 mxb.mailgun.org 600s 13.9 ms 10.89.0.1
00:52:34 AAAA 2606:50c0:8003::153 2606:50c0:8001::153 2606:50c0:8000::153 2606:50c0:8002::153 600s 16.2 ms 10.89.0.1
00:52:34 A 185.199.109.153 185.199.110.153 185.199.108.153 185.199.111.153 600s 15.7 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 185.199.108.153 Open 2.8 ms —
80 TCP http 2606:50c0:8000::153 Open 3.0 ms —
80 TCP http 185.199.110.153 Open 8.4 ms —
443 TCP https 2606:50c0:8000::153 Open 2.6 ms —
443 TCP https 185.199.108.153 Open 1.5 ms —
443 TCP https 185.199.110.153 Open 1.8 ms —
Active IP Addresses
IP Address Version Reverse DNS CIDR Country City ASN Reputation First Seen Last DNS Hits Misses Uptime % Avg Latency
2606:50c0:8000::153 IPv6 — 2606:50c0:8000::/48 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 4.9 ms
2606:50c0:8001::153 IPv6 — 2606:50c0:8001::/48 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 4.4 ms
2606:50c0:8002::153 IPv6 — 2606:50c0:8002::/48 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 3.9 ms
2606:50c0:8003::153 IPv6 — 2606:50c0:8003::/48 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 4.2 ms
185.199.109.153 IPv4 cdn-185-199-109-153.github.com 185.199.109.0/24 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 3.7 ms
185.199.110.153 IPv4 cdn-185-199-110-153.github.com 185.199.110.0/24 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 3.5 ms
185.199.111.153 IPv4 cdn-185-199-111-153.github.com 185.199.111.0/24 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 3.1 ms
185.199.108.153 IPv4 cdn-185-199-108-153.github.com 185.199.108.0/24 US — AS54113 Fastly, Inc. Clean 2026-04-19 17:41 2026-04-22 09:25 8 0 100.0% 4.1 ms
34.160.157.95 IPv4 mxa.mailgun.org — — — — — 2026-04-20 12:53 2026-04-20 12:53 0 0 — —
34.160.13.42 IPv4 mxa.mailgun.org — — — — — 2026-04-19 20:39 2026-04-19 20:39 0 0 — —
34.160.63.108 IPv4 mxb.mailgun.org — — — — — 2026-04-19 20:39 2026-04-19 20:39 0 0 — —
Technology
Technology Stack 17 detected
HTTP/2
HTTP/3 (QUIC)
17
Technologies
API 1
Public CORS API
90%
CORS wildcard origin
Analytics 1
70%
Analytics script
CDN 2
90%
X-Served-By header
70%
jsDelivr CDN
CMS 1
70%
Meta generator
Cache 2
90%
X-Proxy-Cache header
90%
Via header
DNS 1
85%
NS record: dahlia.ns.cloudflare.com
Email 3
85%
MX record: 10 mxa.mailgun.org
85%
SPF include: v=spf1 include:spf.messagingengine.com include:mailgun.org include…
SPF Record
85%
TXT SPF: v=spf1 include:spf.messagingengine.com include:mailgun.org include:_ho…
Platform 1
90%
X-GitHub-Request-Id header
SEO 2
70%
JSON-LD structured data
70%
Schema.org structured data
Service 1
70%
DocSearch by Algolia
Social 2
70%
Open Graph meta tags
70%
Twitter Card meta
Technology Provider 1 tech · 1 sites

This domain provides technology used by other monitored sites.

Jekyll
discourse.org getform.io mathjax.org pages.github.com plausible.io
Discovery
Crawl Configuration
robots.txt Sitemap · 210 URLs
robots.txt 0 disallow · 0 allow
User-Agent Directive Path / Value
* Sitemap https://jekyllrb.com/sitemap.xml 
Sitemap: https://jekyllrb.com/sitemap.xml
Sitemap
210
URLs
Sitemap Accessible
Standard
Discovered Sub-domains 6
Wordlist Brute-force 3 Certificate Transparency 3
Subdomain Source Status Code Response IPs Last Checked
dashboard.jekyllrb.com Wordlist Brute-force UP 200 106 ms 2606:4700:3035::6815:3ca8, 2606:4700:3031::ac43:c66c 2 days, 5 hours ago
import.jekyllrb.com Certificate Transparency UP 200 45 ms 2606:50c0:8001::153, 2606:50c0:8002::153, 2606:50c0:8003::153, 2606:50c0:8000::153 2 days, 5 hours ago
mail.jekyllrb.com Wordlist Brute-force DOWN 523 80 ms 2606:4700:3031::ac43:c66c, 2606:4700:3035::6815:3ca8 2 days, 5 hours ago
talk.jekyllrb.com Certificate Transparency UP 200 198 ms 2602:fd3f:2:ff02::4b 2 days, 5 hours ago
teams.jekyllrb.com Certificate Transparency Pending — — — Never
www.jekyllrb.com Wordlist Brute-force UP 200 164 ms 2606:4700:3031::ac43:c66c, 2606:4700:3035::6815:3ca8 2 days, 5 hours ago