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booking.com

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

Security headers: F 17/100 (rank #390 of 461) · TLS: TLSv1.3 · Cert expires in 172 days (rank #425 of 459 soonest) · Response: 711.2 ms (rank #376 of 446)
Certificate valid for 172 more days (until Apr 22 23:59:59 2027 GMT).

TLS certificate

FieldValue
IssuerDigiCert Inc
Subject CN*.booking.com
Valid untilApr 22 23:59:59 2027 GMT
Days left172
TLS versionTLSv1.3
SAN entries2

Security headers (17/100, grade F)

HeaderStatus
strict-transport-securitymax-age=63072000; includeSubDomains; preload
content-security-policymissing
x-frame-optionsmissing
x-content-type-optionsmissing
referrer-policymissing
permissions-policymissing

Availability & performance

FieldValue
Availability100% (3/3 probes)
Avg response711.2 ms
Fastest / slowest699.0 / 718.1 ms
HTTP status202 (https)
ServerCloudFront

DNS & robots.txt

FieldValue
A records18.164.174.94, 18.164.174.74, 18.164.174.114, 18.164.174.55
Nameserversns-1288.awsdns-33.org, ns-1959.awsdns-52.co.uk, ns-508.awsdns-63.com, ns-716.awsdns-25.net
MX records2
robots.txtpresent (252 sitemap refs, 0 disallow rules)

How booking.com compares

SiteHeadersScoreCert days leftms
expedia.comC6753943.9
skyscanner.comC6766843.3
lyft.comC67161519.4
hostelworld.comC6748465.0
trainline.comC6759309.9
airbnb.comC50881098.1
kayak.comC5086544.0
uber.comC50107277.4

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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.