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vercel.com

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

Security headers: B 83/100 (rank #45 of 461) · TLS: TLSv1.3 · Cert expires in 53 days (rank #111 of 459 soonest) · Response: 100.7 ms (rank #121 of 446)
Certificate valid for 53 more days (until Dec 24 12:18:21 2026 GMT).

TLS certificate

FieldValue
IssuerLet's Encrypt
Subject CN*.vercel.com
Valid untilDec 24 12:18:21 2026 GMT
Days left53
TLS versionTLSv1.3
SAN entries2

Security headers (83/100, grade B)

HeaderStatus
strict-transport-securitymax-age=31536000; includeSubDomains; preload
content-security-policydefault-src 'self' vercel.com *.vercel.com assets.vercel.com *.vercel.sh vercel.live wss:/
x-frame-optionsDENY
x-content-type-optionsnosniff
referrer-policyorigin-when-cross-origin
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response100.7 ms
Fastest / slowest95.0 / 107.3 ms
HTTP status200 (https)
ServerVercel

DNS & robots.txt

FieldValue
A records64.239.123.65, 64.239.109.1
Nameserversns1.vercel-dns.com, ns2.vercel-dns.com
MX records5
robots.txtpresent (1 sitemap refs, 11 disallow rules)

How vercel.com compares

SiteHeadersScoreCert days leftms
cloudflare.comA10033181.2
heroku.comA1003572.1
upcloud.comA1004257.3
render.comB8347142.1
cloud.google.comB8359205.4
hetzner.comB83891179.8
vultr.comB83186215.4
linode.comC67155078.9

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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.