indexo.dev

cheapflights.com

.com crawl

First seen 2026-04-11 · Last seen 2026-05-19 · ok HTTP/1.1 200 475 ms crawled 2026-05-19

US · 151.101.193.29 · AS54113 Fastly, Inc.

Reputation 95/100 weak security headers

sector other type homepage

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
MarkMonitor Inc.
Created
1997-08-26
Expires
2028-08-25 828 days left
Updated
2025-09-18
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
  • 10 mxa-009e5101.gslb.pphosted.com
  • 10 mxb-009e5101.gslb.pphosted.com
TXT
  • v=DMARC1; p=none; rua=mailto:dmarc@cheapflights.com; ruf=mailto:dmarc@cheapflights.com;fo=1
Verified for
  • Microsoft 365

Email authentication strong

SPF
v=spf1 include:cheapflights.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email
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.cheapflights.com/sitecaptcha.html?out=%2F

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

Linked from (1)