kayak.co.uk

.uk crawl

First seen 2026-04-11 · Last seen 2026-05-20 · ok HTTP/1.1 200 930 ms crawled 2026-05-18

US · 151.101.129.29 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

Classifying

HTML metadata

Title: Please verify that you are a real user
Language: en

Technology

Server: KAYAK

Third-party hosts loaded (1)

www.google.com×1

Registration

Registrar

101domain GRS Ltd

Created

1997-07-15

Expires

2027-07-15 420 days left

Updated

2025-04-18

Name servers

blue.foundationdns.com.
blue.foundationdns.net.
blue.foundationdns.org.

DNS records live

NS

blue.foundationdns.com
blue.foundationdns.net
blue.foundationdns.org

MX

Show 7 MX records

0 aspmx.l.google.com
10 aspmx2.googlemail.com
10 aspmx3.googlemail.com
10 aspmx4.googlemail.com
10 aspmx5.googlemail.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com

Verified for

GlobalSign

Email authentication strong

SPF: v=spf1 include:spf.kayak.com ~all
softfail (~all)
DMARC: v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email,mailto:dmarc@kayak.com
policy: reject (enforced)
DKIM: no key found at common selectors

Certificate (current)

R13

from 2026-05-01 to 2026-07-30

Expires in 71 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.kayak.co.uk/sitecaptcha.html?out=%2F

findings

missing HSTS
missing Content Security Policy
missing frame protection
missing content type protection
missing Referrer Policy
missing Permissions Policy