kayak.com

Observed 2026-07-13T00:04:29.684513385+00:00 (1d ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onFastly

Email byProofpoint

Secured byLet's Encrypt

Registered with101domain GRS Limited

Also usesAtlassianDockerDocuSignGoogle Search ConsoleLinearNotionStripe

IPv6 · 93 subdomains · travel

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat kayak.com actually stands on - every host below is a signed observation

kayak.com

A / AAAA

151.101.193.29151.101.1.29151.101.129.29151.101.65.29+4 more

Fastlyserves the site

blue.foundationdns.comblue.foundationdns.netblue.foundationdns.org

foundationdns.com + foundationdns.net + moreanswers its DNS

mxa-009e5101.gslb.pphosted.commxb-009e5101.gslb.pphosted.com

Proofpointreceives its email

TLS

kayak.com

Let's Encryptissued its certificate

DNS Records

A 4

151.101.193.29
151.101.1.29
151.101.129.29
151.101.65.29

AAAA 4

2a04:4e42:400::285
2a04:4e42:200::285
2a04:4e42::285
2a04:4e42:600::285

MX 2

10mxa-009e5101.gslb.pphosted.com
10mxb-009e5101.gslb.pphosted.com

TXT 47

MS=ms32183003
_globalsign-domain-verification=p1fktqCHnOA1sE262wg61RlM1M1TddxeBhTTQfKOf-
adobe-idp-site-verification=e3698045df155e7f8cf3b02c00c51c334c988ed32d2c35abf118b5455559d0fb
airtable-verification=ab2905fae08cc438965f22077ffe0917
anthropic-domain-verification-ssadh3=5QlR12RKrK6yot7p3HMOdRp65
apple-domain-verification=y2Igt0Wg-UHV70fp8FwwAY0lXT7yuhgjH7LQCBWWn3k
atlassian-domain-verification=B1e9uqeJyMnx/b8qh19lhS2HmbMwe7iMsn3YJUdW1FrMfjT5ZIZIApoe6mckiqGv
atlassian-sending-domain-verification=ee4a120b-7262-4e68-b208-f80801824d31
cisco-ci-domain-verification=20500cc295a110d0573b2bdc2093ab09b58730d8f8b963895b6a3133a368cb25
cursor-domain-verification-eerey1=DeRjeVboCFaoJnWyaHOvbIMSV

NS 3

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

SOA 1

blue.foundationdns.com dns.cloudflare.com

CAA 14

iodef "mailto:ops@kayak.com"
issue "awstrust.com"
issue "comodoca.com"
issue "digicert.com; cansignhttpexchanges=yes"
issue "globalsign.com"
issue "letsencrypt.org"
issue "pki.goog; cansignhttpexchanges=yes"
issue "ssl.com"
issuewild "amazon.com"
issuewild "comodoca.com"

TLS Certificates (3)

Common Name	Issuer	Expires
`kayak.com`	C=US, O=Let's Encrypt, CN=YR2	Mon, 28 Sep 2026 16:48:19 +0000
`YR2`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (0)

None observed.

The proof

Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.

Verify this receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for kayak.com. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/kayak.com">
  <img src="https://domaindrift.io/badge/kayak.com.svg"
       width="300" height="64" alt="DomainDrift signed observations for kayak.com">
</a>

Ed25519 Receipt

Receipt ID: 5219be8b-787d-47e8-bf16-2b75a845c808
Output Hash: 06feb53ad902db6f4437215180c6a43aa23835a41105b63df2540441e790bc82
Signature: ed25519:bb8e55824bc60bb2ebda98684c786472d570aa31766d9abe1c86a1a8c72579c60048f325850476dd50953ae15461144b52dce84e6f26b42ef8b4306ecd187b04
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

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