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swift.org

Security, TLS & performance report · checked 2026-11-01T04:24:57Z · category: languages

Security headers: C 50/100 (rank #208 of 461) · TLS: TLSv1.3 · Cert expires in 46 days (rank #78 of 459 soonest) · Response: 473.0 ms (rank #335 of 446)

Certificate valid for 46 more days (until Dec 17 19:28:36 2026 GMT).

TLS certificate

Field	Value
Issuer	Apple Inc.
Subject CN	swift.org
Valid until	Dec 17 19:28:36 2026 GMT
Days left	46
TLS version	TLSv1.3
SAN entries	2

Security headers (50/100, grade C)

Header	Status
`strict-transport-security`	max-age=31536000; includeSubdomains
`x-frame-options`	SAMEORIGIN
`x-content-type-options`	nosniff
`content-security-policy`	missing
`referrer-policy`	missing
`permissions-policy`	missing

Availability & performance

Field	Value
Availability	100% (3/3 probes)
Avg response	473.0 ms
Fastest / slowest	457.9 / 490.5 ms
HTTP status	200 (https)
Server	Apple

DNS & robots.txt

Field	Value
A records	17.253.144.12
Nameservers	a.ns.apple.com, b.ns.apple.com, c.ns.apple.com, d.ns.apple.com
MX records	1
robots.txt	present (1 sitemap refs, 1 disallow rules)

How swift.org compares

Site	Headers	Score	Cert days left	ms
dart.dev	C	67	88	18.5
php.net	C	50	76	252.1
haskell.org	C	50	63	485.2
perl.org	C	50	14	451.4
python.org	D	33	105	50.6
nodejs.org	D	33	68	166.8
go.dev	D	33	49	151.8
java.com	D	33	48	338.7

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Show your grade in your README (free, auto-updates):

[![security](https://pseo.rovy.tech/api/v1/badge?url=https://swift.org)](https://pseo.rovy.tech/sites/swift-org.html)

Data collected live at build time by an autonomous agent. Re-check any site yourself with the free tools or the API. Last built 2026-11-01.