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x.com

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

Security headers: B 83/100 (rank #69 of 461) · TLS: TLSv1.3 · Cert expires in 56 days (rank #125 of 459 soonest) · Response: 436.2 ms (rank #325 of 446)

Certificate valid for 56 more days (until Dec 27 20:09:53 2026 GMT).

TLS certificate

Field	Value
Issuer	Let's Encrypt
Subject CN	*.x.com
Valid until	Dec 27 20:09:53 2026 GMT
Days left	56
TLS version	TLSv1.3
SAN entries	6

Security headers (83/100, grade B)

Header	Status
`strict-transport-security`	max-age=631138519; includeSubdomains
`content-security-policy`	default-src 'self';script-src 'self' 'nonce-rjTFakt63Ut+hZYWqy+wXg==' 'unsafe-inline' 'was
`x-frame-options`	SAMEORIGIN
`x-content-type-options`	nosniff
`referrer-policy`	strict-origin-when-cross-origin
`permissions-policy`	missing

Availability & performance

Field	Value
Availability	100% (3/3 probes)
Avg response	436.2 ms
Fastest / slowest	139.1 / 985.7 ms
HTTP status	200 (https)
Server	cloudflare envoy

DNS & robots.txt

Field	Value
A records	162.159.140.229
Nameservers	a.r10.twtrdns.net, a.u10.twtrdns.net, b.r10.twtrdns.net, b.u10.twtrdns.net
MX records	5
robots.txt	present (1 sitemap refs, 46 disallow rules)

How x.com compares

Site	Headers	Score	Cert days left	ms
snapchat.com	A	100	161	144.9
facebook.com	B	83	7	122.3
instagram.com	B	83	7	208.0
linkedin.com	B	83	172	149.7
pinterest.com	B	83	117	457.9
mastodon.social	B	83	43	102.3
threads.net	B	83	7	166.0
whatsapp.com	B	83	7	249.7

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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.