curl.se — updown.website

Response Time & Availability (24h)

SSL / TLS Certificate

84

days left

Valid

Apr 6, 2026 Jul 5, 2026

Issued → Expires

Subject	`commonName=curl.se`
Issuer	countryName=US, organizationName=Let's Encrypt, commonName=R12
Valid From	2026-04-06 16:32
Expires	2026-07-05 16:32
Serial Number	`054163DCCAF342A6D1C632DA387CD85340F2`
SHA-256 Fingerprint	`8b:02:1b:88:b8:66:d4:de:3b:3b:f1:c2:4d:07:c2:12:c8:53:2f:00:2b:36:b1:3f:ba:7e:05:03:4e:66:af:7e`
Subject Alt Names	curl.se
Last Checked	2026-04-11 22:56:39

Latest HTTP Response Details

Final URL	`https://curl.se/`
Status Code	200
Response Time	279 ms
Content Size	11 KB (11.1 KB)
Content Type	`text/html`
Server	nginx/1.27.5

TLS Version	TLSv1.3
TLS Cipher	`TLS_AES_128_GCM_SHA256`
Redirects	0
Checked	2026-04-11 22:56:39

Security Headers 6/6

Header	Status	Value
`Strict-Transport-Security`	Present	max-age=31536000
`Content-Security-Policy`	Present	upgrade-insecure-requests; block-all-mixed-content; default-src 'none'; img-src 'self'; style-src 'unsafe-inline' 'self'; form-action 'self'; frame-ancestors 'none'; require-trusted-types-for 'script';
`X-Frame-Options`	Present	deny
`X-Content-Type-Options`	Present	nosniff
`Referrer-Policy`	Present	strict-origin
`Permissions-Policy`	Present	accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), bluetooth=(), browsing-topics=(), camera=(), display-capture=(), document-domain=(), encrypted-media=(), execution-while-not-rendered=(), execution-while-out-of-viewport=(), fullscreen=(), gamepad=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), local-fonts=(), magnetometer=(), microphone=(), midi=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), speaker-selection=(), usb=(), web-share=(), xr-spatial-tracking=()

DNS Intelligence (24h)

Avg Resolution

4.3 ms

Min / Max

0.7 / 7.2 ms

Record Types

6

Lookups (24h)

18

DNS Records

A

151.101.65.91 151.101.1.91 151.101.193.91 151.101.129.91

523s 0.7ms

AAAA

2a04:4e42:400::347 2a04:4e42:e00::347 2a04:4e42:200::347 2a04:4e42:a00::347 2a04:4e42::347 2a04:4e42:c00::347 2a04:4e42:800::347 2a04:4e42:600::347

2925s 1.8ms

MX

10	`mail.haxx.se`

3600s 20.6ms

NS

ns1.haxx.se nx1.named.se nx2.named.se nx3.named.se ns.amplitut.de

3600s 17.4ms

TXT

SPF (1)

v=spf1 -all

TXT Record (1)

fastly-domain-delegation-lk4328dd00dsaa-305976-20201102

3600s 16.3ms

SOA

Primary NS

ns1.haxx.se

Admin

info@haxx.se

Serial: 2025031201 Refresh: 1h Retry: 15s Expire: 1d Min TTL: 1h

3600s 18.9ms

Email Security Posture

MX Records

SPF

Details

v=spf1 -all

DMARC

BIMI

MTA-STS

Partial

Overall

DNS Propagation Consistent

Resolver	IPs Returned	Response Time
Quad9	`151.101.1.91` `151.101.129.91` `151.101.193.91` `151.101.65.91`	2.41ms
Google	`151.101.1.91` `151.101.129.91` `151.101.193.91` `151.101.65.91`	7.44ms
AdGuard	`151.101.1.91` `151.101.129.91` `151.101.193.91` `151.101.65.91`	8.44ms
OpenDNS	`151.101.1.91` `151.101.129.91` `151.101.193.91` `151.101.65.91`	5.84ms
Cloudflare	`151.101.1.91` `151.101.129.91` `151.101.193.91` `151.101.65.91`	4.95ms

WHOIS / Domain Registration

Registrar

Oderland

Created

2020-10-19

Updated

2021-08-18

Expires

2026-10-19

Name Servers (WHOIS)

ns.amplitut.de ns1.haxx.se nx3.named.se nx2.named.se nx1.named.se

Domain Status

ok

DNSSEC

Enabled

WHOIS Last Checked

2026-04-11 22:56

Resolution Time (A/AAAA recent)

20:37 22:56

Time	Type	Values	TTL	Resolution	Nameserver
22:56:38	SOA	`ns1.haxx.se info.haxx.se 2025031201 3600 15 86400 3600`	3600s	18.9 ms	`10.89.0.1`
22:56:38	TXT	`fastly-domain-delegation-lk4328dd00dsaa-305976-20201102` `v=spf1 -all`	3600s	16.3 ms	`10.89.0.1`
22:56:38	NS	`ns1.haxx.se` `nx1.named.se` `nx2.named.se` `nx3.named.se` `ns.amplitut.de`	3600s	17.4 ms	`10.89.0.1`
22:56:38	MX	`10 mail.haxx.se`	3600s	20.6 ms	`10.89.0.1`
22:56:38	AAAA	`2a04:4e42:400::347` `2a04:4e42:e00::347` `2a04:4e42:200::347` `2a04:4e42:a00::347` `2a04:4e42::347` `2a04:4e42:c00::347` `2a04:4e42:800::347` `2a04:4e42:600::347`	2925s	1.8 ms	`10.89.0.1`
22:56:38	A	`151.101.65.91` `151.101.1.91` `151.101.193.91` `151.101.129.91`	523s	0.7 ms	`10.89.0.1`
21:46:15	SOA	`ns1.haxx.se info.haxx.se 2025031201 3600 15 86400 3600`	3600s	15.6 ms	`10.89.0.1`
21:46:15	TXT	`fastly-domain-delegation-lk4328dd00dsaa-305976-20201102` `v=spf1 -all`	3600s	17.5 ms	`10.89.0.1`
21:46:15	NS	`ns.amplitut.de` `ns1.haxx.se` `nx1.named.se` `nx2.named.se` `nx3.named.se`	3600s	17.2 ms	`10.89.0.1`
21:46:15	MX	`10 mail.haxx.se`	3600s	29.3 ms	`10.89.0.1`
21:46:15	AAAA	`2a04:4e42:200::347` `2a04:4e42:a00::347` `2a04:4e42::347` `2a04:4e42:800::347` `2a04:4e42:c00::347` `2a04:4e42:e00::347` `2a04:4e42:400::347` `2a04:4e42:600::347`	108s	6.1 ms	`10.89.0.1`
21:46:15	A	`151.101.129.91` `151.101.193.91` `151.101.65.91` `151.101.1.91`	3553s	5.8 ms	`10.89.0.1`
20:37:13	SOA	`ns1.haxx.se info.haxx.se 2025031201 3600 15 86400 3600`	3600s	15.2 ms	`10.89.0.1`
20:37:13	TXT	`fastly-domain-delegation-lk4328dd00dsaa-305976-20201102` `v=spf1 -all`	3600s	16.1 ms	`10.89.0.1`
20:37:13	NS	`ns.amplitut.de` `ns1.haxx.se` `nx1.named.se` `nx2.named.se` `nx3.named.se`	3600s	17.7 ms	`10.89.0.1`
20:37:13	MX	`10 mail.haxx.se`	3600s	17.5 ms	`10.89.0.1`
20:37:13	AAAA	`2a04:4e42:200::347` `2a04:4e42:a00::347` `2a04:4e42::347` `2a04:4e42:e00::347` `2a04:4e42:400::347` `2a04:4e42:c00::347` `2a04:4e42:800::347` `2a04:4e42:600::347`	455s	4.4 ms	`10.89.0.1`
20:37:13	A	`151.101.193.91` `151.101.129.91` `151.101.65.91` `151.101.1.91`	1380s	7.2 ms	`10.89.0.1`

Open Ports 10

Open Ports

10

IPs Scanned

10

Port	Protocol	Service	IP Address	Status	Latency	Banner
`80`	TCP	http	`2a04:4e42:c00::347`	Open	1.4 ms	—
`80`	TCP	http	`151.101.193.91`	Open	4.3 ms	—
`80`	TCP	http	`2a04:4e42:400::347`	Open	2.1 ms	—
`80`	TCP	http	`151.101.1.91`	Open	2.1 ms	—
`443`	TCP	https	`151.101.193.91`	Open	1.5 ms	—
`443`	TCP	https	`2a04:4e42:c00::347`	Open	41.1 ms	—
`443`	TCP	https	`151.101.1.91`	Open	2.4 ms	—
`443`	TCP	https	`2a04:4e42:400::347`	Open	1.6 ms	—
`8443`	TCP	https-alt	`2a04:4e42:c00::347`	Open	39.8 ms	—
`8443`	TCP	https-alt	`2a04:4e42:400::347`	Open	4.2 ms	—

Lighthouse Report

15 minutes ago

Mobile viewport

96

Performance

81

Accessibility

100

Best Practices

75

SEO

● 90–100 Good ● 50–89 Needs Work ● 0–49 Poor

Core Web Vitals: Passed

LCP

1006 ms

Good

TBT

214 ms

Needs Work

CLS

0.013

Good

FCP

964 ms

Good

SI

1540 ms

Good

TTFB

279 ms

Good

Score	Audit	Category
0	Image elements do not have `[alt]` attributes	accessibility seo
0	Links do not have a discernible name	accessibility
0	Document does not have a meta description	seo
0	robots.txt is not valid	seo
0	LCP request discovery	performance
0	Network dependency tree	performance
18	Max Potential First Input Delay 400 ms	performance
50	Image elements do not have explicit `width` and `height`	performance
50	Serve static assets with an efficient cache policy 1 resource found	performance
50	Serve images in next-gen formats Est savings of 24 KiB	performance
50	Properly size images Est savings of 32 KiB	performance
50	Use efficient cache lifetimes Est savings of 0 KiB	performance
50	Improve image delivery Est savings of 56 KiB	performance
50	Render blocking requests	performance
88	Total Blocking Time 210 ms	performance

Desktop viewport

100

Performance

81

Accessibility

100

Best Practices

75

SEO

● 90–100 Good ● 50–89 Needs Work ● 0–49 Poor

Core Web Vitals: Passed

LCP

271 ms

Good

TBT

0 ms

Good

CLS

0.000

Good

FCP

236 ms

Good

SI

462 ms

Good

TTFB

3 ms

Good

Score	Audit	Category
0	Image elements do not have `[alt]` attributes	accessibility seo
0	Links do not have a discernible name	accessibility
0	Document does not have a meta description	seo
0	robots.txt is not valid	seo
0	LCP request discovery	performance
0	Network dependency tree	performance
50	Image elements do not have explicit `width` and `height`	performance
50	Serve static assets with an efficient cache policy 1 resource found	performance
50	Serve images in next-gen formats Est savings of 24 KiB	performance
50	Properly size images Est savings of 53 KiB	performance
50	Use efficient cache lifetimes Est savings of 0 KiB	performance
50	Improve image delivery Est savings of 56 KiB	performance
50	Render blocking requests	performance

Technology Stack 11 detected

HTTP/2

HTTP/3 (QUIC)

11

Technologies

CDN 1

Fastly

90%

X-Served-By header

Cache 1

Varnish v1.1

90%

Via header

Email 1

SPF Record

85%

TXT SPF: v=spf1 -all

Protocol 1

HTTP/3 (QUIC)

90%

Alt-Svc h3 advertised

Security 6

CSP

90%

Content-Security-Policy present

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

Server 1

Nginx v1.27.5

90%

Server header

Crawl Configuration

robots.txt No sitemap

robots.txt 1 disallow · 0 allow · 1 agent

User-Agent	Directive	Path / Value
`*`	Disallow	`/dev/log.cgi`

# no point in indexing these
User-agent: *
Disallow: /dev/log.cgi

Sitemap

No sitemap discovered.
Checked /robots.txt, /sitemap.xml, and /sitemap_index.xml

Active IP Addresses

IP Address	Version	Reverse DNS	CIDR	Country	City	ASN	First Seen	Last DNS	Hits	Uptime %	Avg Latency
`2a04:4e42:c00::347`	IPv6	—	`2a04:4e42:c00::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	15.3 ms
`2a04:4e42:800::347`	IPv6	—	`2a04:4e42:800::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	11.8 ms
`2a04:4e42:600::347`	IPv6	—	`2a04:4e42:600::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	4.3 ms
`2a04:4e42:200::347`	IPv6	—	`2a04:4e42:200::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	4.0 ms
`2a04:4e42:a00::347`	IPv6	—	`2a04:4e42:a00::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	17.6 ms
`2a04:4e42::347`	IPv6	—	`2a04:4e42::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	4.5 ms
`2a04:4e42:e00::347`	IPv6	—	`2a04:4e42:e00::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	15.0 ms
`2a04:4e42:400::347`	IPv6	—	`2a04:4e42:400::/48`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	4.4 ms
`151.101.65.91`	IPv4	—	`151.101.65.0/24`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	3.9 ms
`151.101.129.91`	IPv4	—	`151.101.129.0/24`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	4.1 ms
`151.101.1.91`	IPv4	—	`151.101.1.0/24`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	4.1 ms
`151.101.193.91`	IPv4	—	`151.101.193.0/24`	US	—	AS54113 Fastly, Inc.	2026-04-11 20:37	2026-04-11 22:56	3	100.0%	3.9 ms

Discovered Sub-domains 4

Certificate Transparency 3 Wordlist Brute-force 1

everything.curl.se 6 minutes ago

matrix.curl.se 6 minutes ago

testclutch.curl.se 6 minutes ago

1. www.curl.se

Recent HTTP Checks (24 h)

Total Checks

3

Success Rate

100%

Avg Response

284 ms

Min / Max

279 / 295 ms

Recent Checks

20:37 22:56

Time	Status	Code	Response	Agent	Error
22:56:39	UP	200	279 ms	prod-local	—
21:46:15	UP	200	280 ms	prod-local	—
20:37:13	UP	200	295 ms	prod-local	—

Incident History

No incidents recorded — all clear!