🌐 kayak.nl 200 🔒 SSL Valid
Checked: just now 🔗 Visit site
✨ About this site
A popular travel search engine and aggregator that allows users to compare prices for flights, hotels, and car rentals from hundreds of websites at once. Owned by Booking Holdings, it serves travelers worldwide seeking to plan and book trips efficiently.
📊 What the data says
Registered 28 years ago, the site currently runs on a React stack integrated with Varnish, Google Analytics, and Google Tag Manager. It secures connections with valid SSL, HSTS, and CSP, though performance scores are measured at 37 for mobile and 35 for desktop. The server responds with an HTTP 200 status.
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 →
N/A
Hosting ?The company and location where this website's server is physically located.Read more →
Unknown
Security ?Score based on key HTTP security headers: HSTS, Content-Security-Policy, and X-Frame-Options.Read more →
2/3
IP Address ?The numerical address of the server hosting this website. Reveals location, provider, and network.Read more →
151.101.1.29
Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability.
37 mob
Uptime
100%
⚡ Performance ?Lighthouse performance score from Google PageSpeed Insights (0–100). Measures real-world loading speed, interactivity and visual stability. 37
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Mobile
37
Score
92
Accessibility
96
Best Practices
100
SEO
LCP 17.16s
CLS 0.000
FCP 14.59s
TTFB 0.06s
TBT 763ms
SI 14.59s
Desktop
35
Score
96
Accessibility
96
Best Practices
100
SEO
LCP 4.01s
CLS 0.036
FCP 2.20s
TTFB 0.13s
TBT 909ms
SI 3.65s
Checked: 2026-09-05 06:27:56.394376 · View on PageSpeed
🛠️ Tech Stack ?Technologies detected on this website: CMS, frameworks, libraries, CDN, and analytics tools. 5
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📊 Analytics
Google Analytics Google Tag Manager
🎨 CSS Framework
Bootstrap
⚡ Cache
Varnish
⚡ JS Framework
React
🔗 Shared Identifiers 56
▼

Tracking / monetisation identifiers found on this site that also appear on other domains.

ads.txt seller AppNexus:1356
Shared with 64 other domains
ads.txt seller AppNexus:1908
Shared with 66 other domains
ads.txt seller AppNexus:3703
Shared with 72 other domains
ads.txt seller Rubicon:16114
Shared with 65 other domains
ads.txt seller Rubicon:18020
Shared with 53 other domains
📸 Screenshot 2026-09-02
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Screenshot of kayak.nl
Captured: 2026-09-02 13:06:40 · 5.8 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)151.101.65.29151.101.129.29151.101.1.29151.101.193.29
AAAA (IPv6)2a04:4e42:400::2852a04:4e42::2852a04:4e42:200::2852a04:4e42:600::285
NSblue.foundationdns.comblue.foundationdns.netblue.foundationdns.org
MX30 aspmx3.googlemail.com10 aspmx.l.google.com20 alt1.aspmx.l.google.com20 alt2.aspmx.l.google.com30 aspmx2.googlemail.com
TXT (1)
v=spf1 include:spf.kayak.com ~all
📋 WHOIS / RDAP ?Public registration data: who registered the domain, when, and when it expires.Read more →
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RegistrarMarkMonitor Inc.
Registered1998-12-17
ExpiresN/A
Last Updated2026-04-29
Statusactive
🔒 SSL Certificate ?Encrypts the connection between browsers and this website. Valid SSL = HTTPS works.Read more → Valid
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Subject (CN)kayak.nl
IssuerLet's Encrypt
Valid From2026-08-29
Valid Until2026-11-27 (39 days left)
SANs (1)kayak.nl
📡 HTTP Headers ?Metadata sent by the server: reveals software, caching rules, and security configuration.Read more →
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Status200
ServerKAYAK/1.0
Content-Typetext/html;charset=UTF-8
Final URLhttps://www.kayak.nl/
strict-transport-securitymax-age=10886400; preload
content-security-policyupgrade-insecure-requests; frame-ancestors 'self'
x-content-type-optionsnosniff
referrer-policyorigin-when-cross-origin
cache-controlprivate, no-store
x-cacheMISS, MISS
via1.1 varnish
Security headers ?HTTP headers that protect visitors from attacks. HSTS forces HTTPS, CSP controls resource loading, X-Frame-Options prevents clickjacking.Read more →
HSTS
Content-Security-Policy
X-Frame-Options
🏠 Hosting ?Physical infrastructure: where the server is, who operates it, and what network it belongs to.Read more →
▼
IP Address151.101.1.29
ProviderUnknown
OrganizationN/A
ASNN/A
LocationN/A
🛡️ Security Score B (5/7)
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Valid SSL
HSTS
CSP
X-Frame-Options
X-Content-Type
Referrer-Policy
Permissions-Policy
🗺️ Sitemap & Robots
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Partially restricted
Some areas are hidden from crawlers, but the main content stays open to search engines.
🤖
AI crawlers restricted — ChatGPT-User
Areas hidden from crawlers:
🚫 Entire site 1 🔍 Search & filters 2 🔌 API & endpoints 2 📁 Other paths 30
Show raw disallow rules (35)
/things-to-do/*
/charm/horizon/cars/citycars/CityCarsAgencyMapViewLink
/charm/horizon/cars/airportcars/AirportCarsResults
/charm/horizon/common/search/PreloadAction
/s/horizon/common/layout/AjaxFooterLinks
/charm/horizon/common/layout/AjaxFooterLinks
/s/horizon/common/privacy/AjaxHeaderCookiesMessage
/charm/horizon/common/privacy/AjaxHeaderCookiesMessage
/s/horizon/common/privacy/AjaxStyleJamHeaderCookiesMessage
/s/horizon/common/layout/StyleJamNavMenu
/charm/horizon/common/privacy/AjaxStyleJamHeaderCookiesMessage
/charm/horizon/flights/flightdeals/frontdoor/FlightDealsLinks
/charm/horizon/common/compareto/slide/SlideCompareToAction
/charm/horizon/common/layout/MoreNavContentApiAction
/charm/horizon/common/layout/NavMenuContent
/charm/horizon/flights/flightroutes/AjaxGoodToKnow
/charm/horizon/flights/cabinclassflightroutes/AjaxCabinClassFlightRoutesGoodToKnow
/charm/horizon/flights/flightroutes/AjaxWhenToBookCharts
/charm/horizon/flights/flightroutes/AjaxFlightRouteInfoTable
/charm/horizon/flights/flightroutes/CountryCityRouteFAQAction
/charm/horizon/restaurants/static_details/ajax/RestaurantDetailsReviewsList
/charm/horizon/flights/flightroutes/LatestFlightDealsAjax
/charm/horizon/flights/flightroutes/IpOriginAjax
/api/
/charm/horizon/hotels/venue/ConventionCenterCarsResults
/charm/horizon/hotels/cityguides/CityGuidesBacklinkActivityUrls
/charm/horizon/common/core/AjaxMany
/charm/horizon/react/component/PrivacyMenuStateProviderAction
/charm/horizon/common/authentication/providers/AuthStateProviderAction
/api/search/V8
/hotels/
/charm/horizon/flights/airport/AirportFlightStatusTable
/
/charm/horizon/common/privacy/providers/CookiesDataProvider
/i/api/seo/
… list truncated
Sitemap Found 46 sitemaps (index) pages
Last modified 2026-10-16T01:28:35-04:00
🔗 Social & Meta Tags Complete
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TitleZoek naar vluchten, hotels en huurauto's | KAYAK
DescriptionKAYAK doorzoekt honderden andere reis-websites in één keer, zodat je de info krijgt die je nodig hebt voor het boeken van je vlucht, hotel of huurauto.
OG TitleZoek naar vluchten, hotels en huurauto's | KAYAK
OG DescriptionKAYAK doorzoekt honderden andere reis-websites in één keer, zodat je de info krijgt die je nodig hebt voor het boeken van je vlucht, hotel of huurauto.
OG Imagehttps://content.r9cdn.net/rimg/provider-logos/common/socialmedia/kayak-logo.png?width=1200&height=630&crop=false
OG preview
OG Typearticle
OG Site NameKAYAK
Twitter Cardsummary_large_image
Canonical URLhttps://www.kayak.nl
Languagenl-nl
📧 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.kayak.com ~all
DMARC✓ Present
v=DMARC1; p=reject; rua=mailto:[email protected],mailto:[email protected]
MX Records
30 → aspmx3.googlemail.com
10 → aspmx.l.google.com
20 → alt1.aspmx.l.google.com
20 → alt2.aspmx.l.google.com
30 → aspmx2.googlemail.com
🌍 Other TLDs ?Other top-level domain variants of this domain name and their availability. 20 active 3 available
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.com ●
.net ●
.org ●
.info ●
.io ●
.co ●
.dev ●
.app ●
.me ●
.biz Available
.eu ●
.xyz ●
.fi Available
.se ●
.de ●
.uk ●
.fr ●
.nl current
.es ●
.it ●
.us ●
.ca Available
.com.au ●
.co.uk ●
📡 Uptime Monitor
▼
Current Status 🟢 Online
HTTP Status 200
Response Time 267ms
Last Checked 2026-10-17 03:46:19.354295
Uptime (30d) 100%
🔗 Similar Sites 8
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