kayak.com 200
🔒 SSL Valid
HTTP Status A three-digit code showing if the site loaded successfully (200), redirects (301/302), or has errors (4xx/5xx).Read more →
200
SSL Expires When the SSL certificate expires. An expired certificate causes browser security warnings.Read more →
in 39d
Domain Expires When the domain registration expires. If not renewed, the domain becomes available to others.Read more →
in 255d
Hosting The company and location where this website's server is physically located.Read more →
Fastly
Security Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
1/3
IP Address The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
151.101.193.29
Tech Stack Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 4
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📊 Analytics
Google Analytics
Google Tag Manager
⚡ Cache
Varnish
⚡ JS Framework
React
Screenshot 2026-08-20
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Captured: 2026-08-20 05:42:57 · 5.4 KB
DNS Records DNS translates domain names to IP addresses. Records control where the site, email, and services are directed.Read more →
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| A (IPv4) | 151.101.129.29151.101.193.29151.101.1.29151.101.65.29 |
| AAAA (IPv6) | 2a04:4e42:200::2852a04:4e42::2852a04:4e42:600::2852a04:4e42:400::285 |
| NS | blue.foundationdns.orgblue.foundationdns.comblue.foundationdns.net |
| MX | 10 mxa-009e5101.gslb.pphosted.com10 mxb-009e5101.gslb.pphosted.com |
| TXT | stripe-verification=a3cd1e5407820ba2f4e9df948ed7871a2303c8488c66b781302677cccd05fde0 stripe-verification=87f88a3ae169a524f546ed203d0cb22535e7f0e722a5004814cb828d3d1b342f docker-verification=38689d18-8405-471e-8c40-0f79329477db docusign=b94148f1-8103-446e-be3c-c780204b2b73 stripe-verification=c6ba89f5464c6bfe6ee74b5e0b09d8f67bca1ba9d28ffb7c4d51067344241bbe _globalsign-domain-verification=p1fktqCHnOA1sE262wg61RlM1M1TddxeBhTTQfKOf- google-site-verification=w24oU5jGpVa8SU1Tznbo4CU8_m_WL6o-yDo0gosSBKY mgverify=19b8eb35bd233256b9c7b140bd3739975015fc9e05f760bf919fe5999bd01f0f google-site-verification=Ne2Q3MQtiFamXAbgdT27mGRHEP1uH6u0S3hxE8oEIUg stripe-verification=6fc06b28a4dce12135cfc982ee67b4f50ecdf24931633f46ed324b939e2d132c google-site-verification=hR-vohAQxRsRyvUskvHc58Ebvc4yVW7FXc7pyRzIdz4 smartsheet-site-validation=VnoFFHldpjUduBdwSfSrHI1U3dlbsp4P onetrust-domain-verification=1d14495f61ec44ddb84c7e861332306b v=spf1 include:_spf.psm.knowbe4.com include:mail.zendesk.com include:_spf.presscloud.com include:helpscoutemail.com include:kayak.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all google-site-verification=atbvv5AjB8MGJiGm0kJQicx405wRnH3IXkvhmevhlWs stripe-verification=36a8ae673d2824b08508d33f51fbd183a78e598178cf455b3941b48b1ed1848c adobe-idp-site-verification=e3698045df155e7f8cf3b02c00c51c334c988ed32d2c35abf118b5455559d0fb google-site-verification=U_6jqgvCpjeeNLZEUNq4kW-yF4KXPrcUUifhpyjlJyQ jamf-site-verification=0aiX3pBSM2fa-OoV_DbSDg docusign=32480aaa-d033-46e8-8295-f0a0a1a7a5dc notion-domain-verification=ulKLX952hySY2ToVspcw3nuYFf7ANxdT5aOZR2JpUby openai-domain-verification=dv-d02WfHAbY79UMiEztHNqRWoE onetrust-domain-verification=5785b70b49c94d87b375b04a26cb9a99 teamviewer-sso-verification=f75e9fa8bd764fe28cfd406ac0863d88 meltwater_sso_20220613_TRITON-9222 google-site-verification=RkXPYTo0sfAReK2PL4rFLzDvF69y68je5By3mbLYtTI linear-domain-verification=5h25z4iybzed cisco-ci-domain-verification=20500cc295a110d0573b2bdc2093ab09b58730d8f8b963895b6a3133a368cb25 docusign=d717820e-c9d2-4c7f-8673-c52c7533107e atlassian-domain-verification=B1e9uqeJyMnx/b8qh19lhS2HmbMwe7iMsn3YJUdW1FrMfjT5ZIZIApoe6mckiqGv anthropic-domain-verification-ssadh3=5QlR12RKrK6yot7p3HMOdRp65 stripe-verification=0541ddd99d259a6b83784688d152e53689b3c7b62ab2a94c1af4881d8c325667 google-site-verification=EMk53mZVKZzMKDvuxN7Izz5SrGePcS6YL9UU-O5p3Cw atlassian-sending-domain-verification=ee4a120b-7262-4e68-b208-f80801824d31 docusign=401274e0-a81e-4f1e-9379-3d0cb24b0646 onetrust-domain-verification=91fa27999c43422991e04989039fab48 openai-domain-verification=08273489 loom-site-verification=cf88c3547adb422198e2effdcbc1822c cursor-domain-verification-eerey1=DeRjeVboCFaoJnWyaHOvbIMSV stripe-verification=6bb69f06400ffd81c173e80ece77f9cb903fd23583d37619628834425c8e0335 google-site-verification=7Swb0dHV4cMeHcGWVdFuKZYVA6rhwGfDU0scbwz22-c airtable-verification=ab2905fae08cc438965f22077ffe0917 apple-domain-verification=y2Igt0Wg-UHV70fp8FwwAY0lXT7yuhgjH7LQCBWWn3k stripe-verification=7ce9b2bea1ac18f9f8081a240f771d3d36e6177de24d42e48b3c8f7fd5b0ba47 MS=ms32183003 |
WHOIS / RDAP Public registration data: who registered the domain, when, and when it expires.Read more →
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| Registrar | 101domain GRS Limited |
| Registered | 1995-04-13 |
| Expires | 2027-05-02 (in 255 days) |
| Last Updated | 2025-01-31 |
| Status | client delete prohibitedclient transfer prohibitedserver delete prohibitedserver transfer prohibitedserver update prohibited |
SSL Certificate Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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| Subject (CN) | kayak.com |
| Issuer | Let's Encrypt |
| Valid From | 2026-06-30 |
| Valid Until | 2026-09-28 (39 days left) |
| SANs (1) | kayak.com |
HTTP Headers Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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| Status | 200 |
| Server | KAYAK/1.0 |
| Content-Type | text/html;charset=UTF-8 |
| Final URL | https://www.kayak.com/ |
| content-security-policy | upgrade-insecure-requests; frame-ancestors 'self' |
| x-content-type-options | nosniff |
| referrer-policy | origin-when-cross-origin |
| cache-control | private, no-store |
| x-cache | MISS, MISS |
| via | 1.1 varnish |
Security headers HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
Hosting Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
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| IP Address | 151.101.193.29 |
| Provider | Fastly |
| Organization | Fastly, Inc. |
| ASN | AS54113 |
| Country | US |
| City | San Francisco |
Security Score
C (4/7)
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Sitemap & Robots
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| robots.txt | Found Open |
| Sitemap | Found 107 sitemaps (index) pages |
| Last modified | 2026-08-19T02:22:56-04:00 |
Social & Meta Tags
Complete
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| Title | Search Flights, Hotels & Rental Cars | KAYAK |
| Description | KAYAK searches hundreds of other travel sites at once to find the information you need to make the right decisions on flights, hotels & rental cars. |
| OG Title | Search Flights, Hotels & Rental Cars | KAYAK |
| OG Description | KAYAK searches hundreds of other travel sites at once to find the information you need to make the right decisions on flights, hotels & rental cars. |
| OG Image | https://content.r9cdn.net/rimg/provider-logos/common/socialmedia/kayak-logo.png?width=1200&height=630&crop=false |
| OG Type | article |
| OG Site Name | KAYAK |
| Twitter Card | summary_large_image |
| Canonical URL | https://www.kayak.com |
| Language | en-us |
Mail Security Email authentication records (SPF & DMARC) that prevent spoofing and phishing from this domain.Read more →
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| SPF | ✓ Present v=spf1 include:_spf.psm.knowbe4.com include:mail.zendesk.com include:_spf.presscloud.com include:helpscoutemail.com include:kayak.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all |
| DMARC | ✓ Present v=DMARC1; p=reject; pct=100; adkim=r; aspf=r; rua=mailto:[email protected] |
| MX Records | 10 → mxa-009e5101.gslb.pphosted.com 10 → mxb-009e5101.gslb.pphosted.com |