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85
Total
85
DNS
90
Email
77
Security
70
Network
100
Availability
Domainkayak.com
IPv44
IPv64
MX records2
StatusActive
Domain technical report

Search Flights, Hotels & Rental Cars | KAYAK

kayak.com

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.

Generated: 2026-08-09T01:30:30-05:00 · Cached result

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IPv44
IPv64
MX2
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

4 IPv4 address(es) detected.

✓
IPv6 (AAAA)10 / 10 pts · Dns

4 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

3 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

!
DNSSEC chain0 / 15 pts · Dns

Both DS and DNSKEY are required.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

!
MTA-STS0 / 5 pts · Mail

Mail transport policy.

!
TLS-RPT0 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

50 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

!
PTR reverse DNS0 / 30 pts · Network

PTR not detected.

✓
IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

✓
IPv6 connectivity35 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

4 record(s)
151.101.65.29
151.101.1.29
151.101.129.29
151.101.193.29

AAAA

4 record(s)
2a04:4e42:200::285
2a04:4e42:600::285
2a04:4e42::285
2a04:4e42:400::285

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
10 mxa-009e5101.gslb.pphosted.com.
10 mxb-009e5101.gslb.pphosted.com.

TXT

45 record(s)
"docker-verification=38689d18-8405-471e-8c40-0f79329477db"
"stripe-verification=c6ba89f5464c6bfe6ee74b5e0b09d8f67bca1ba9d28ffb7c4d51067344241bbe"
"stripe-verification=0541ddd99d259a6b83784688d152e53689b3c7b62ab2a94c1af4881d8c325667"
"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"
"stripe-verification=6fc06b28a4dce12135cfc982ee67b4f50ecdf24931633f46ed324b939e2d132c"
"stripe-verification=6bb69f06400ffd81c173e80ece77f9cb903fd23583d37619628834425c8e0335"
"anthropic-domain-verification-ssadh3=5QlR12RKrK6yot7p3HMOdRp65"
"apple-domain-verification=y2Igt0Wg-UHV70fp8FwwAY0lXT7yuhgjH7LQCBWWn3k"
"cursor-domain-verification-eerey1=DeRjeVboCFaoJnWyaHOvbIMSV"
"google-site-verification=Ne2Q3MQtiFamXAbgdT27mGRHEP1uH6u0S3hxE8oEIUg"
"google-site-verification=U_6jqgvCpjeeNLZEUNq4kW-yF4KXPrcUUifhpyjlJyQ"
"openai-domain-verification=dv-d02WfHAbY79UMiEztHNqRWoE"
"meltwater_sso_20220613_TRITON-9222"
"atlassian-sending-domain-verification=ee4a120b-7262-4e68-b208-f80801824d31"
"cisco-ci-domain-verification=20500cc295a110d0573b2bdc2093ab09b58730d8f8b963895b6a3133a368cb25"
"_globalsign-domain-verification=p1fktqCHnOA1sE262wg61RlM1M1TddxeBhTTQfKOf-"
"onetrust-domain-verification=91fa27999c43422991e04989039fab48"
"onetrust-domain-verification=1d14495f61ec44ddb84c7e861332306b"
"docusign=401274e0-a81e-4f1e-9379-3d0cb24b0646"
"google-site-verification=EMk53mZVKZzMKDvuxN7Izz5SrGePcS6YL9UU-O5p3Cw"
"mgverify=19b8eb35bd233256b9c7b140bd3739975015fc9e05f760bf919fe5999bd01f0f"
"docusign=d717820e-c9d2-4c7f-8673-c52c7533107e"
"google-site-verification=RkXPYTo0sfAReK2PL4rFLzDvF69y68je5By3mbLYtTI"
"google-site-verification=atbvv5AjB8MGJiGm0kJQicx405wRnH3IXkvhmevhlWs"
"google-site-verification=7Swb0dHV4cMeHcGWVdFuKZYVA6rhwGfDU0scbwz22-c"
"google-site-verification=w24oU5jGpVa8SU1Tznbo4CU8_m_WL6o-yDo0gosSBKY"
"loom-site-verification=cf88c3547adb422198e2effdcbc1822c"
"MS=ms32183003"
"notion-domain-verification=ulKLX952hySY2ToVspcw3nuYFf7ANxdT5aOZR2JpUby"
"airtable-verification=ab2905fae08cc438965f22077ffe0917"
"linear-domain-verification=5h25z4iybzed"
"stripe-verification=87f88a3ae169a524f546ed203d0cb22535e7f0e722a5004814cb828d3d1b342f"
"stripe-verification=a3cd1e5407820ba2f4e9df948ed7871a2303c8488c66b781302677cccd05fde0"
"adobe-idp-site-verification=e3698045df155e7f8cf3b02c00c51c334c988ed32d2c35abf118b5455559d0fb"
"stripe-verification=36a8ae673d2824b08508d33f51fbd183a78e598178cf455b3941b48b1ed1848c"
"teamviewer-sso-verification=f75e9fa8bd764fe28cfd406ac0863d88"
"stripe-verification=7ce9b2bea1ac18f9f8081a240f771d3d36e6177de24d42e48b3c8f7fd5b0ba47"
"jamf-site-verification=0aiX3pBSM2fa-OoV_DbSDg"
"atlassian-domain-verification=B1e9uqeJyMnx/b8qh19lhS2HmbMwe7iMsn3YJUdW1FrMfjT5ZIZIApoe6mckiqGv"
"smartsheet-site-validation=VnoFFHldpjUduBdwSfSrHI1U3dlbsp4P"
"docusign=b94148f1-8103-446e-be3c-c780204b2b73"
"google-site-verification=hR-vohAQxRsRyvUskvHc58Ebvc4yVW7FXc7pyRzIdz4"
"docusign=32480aaa-d033-46e8-8295-f0a0a1a7a5dc"
"openai-domain-verification=08273489"
"onetrust-domain-verification=5785b70b49c94d87b375b04a26cb9a99"

NS

3 record(s)
blue.foundationdns.net.
blue.foundationdns.com.
blue.foundationdns.org.

SOA

1 record(s)
blue.foundationdns.com. dns.cloudflare.com. 2411547110 10000 2400 604800 1800

CAA

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

DS

0 record(s)
—

Not configured

DNSKEY

0 record(s)
—

Not configured

RRSIG

0 record(s)
—

Not configured

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
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

Configured
v=DMARC1; p=reject; pct=100; adkim=r; aspf=r; rua=mailto:dmarc_agg@vali.email

DKIM

Selector google
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWuUuD6OJIvN9lweAU6bzfFmGVBfUwd1eu3VSjtWMCPbnfTnj1zDTxsGVNqTv1a6nGgLC8+tuDerc2nfpiK4sTqgotz9EdUOgkQebB88At++QJ+0RHPwvmY3S79Te48FR+SMC72mToJwqiU6fgmfrgXqNBL+We4Q0bCnR1d4Yl/wIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
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.
Final URL
https://www.kayak.com/
HTTP status
200

HTTP

Status
HTTP/2 200
Final URL
https://www.kayak.com/
Version
3
Server
KAYAK/1.0
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
kayak.com
Valid from
2026-06-30T11:48:20-05:00
Valid until
2026-09-28T11:48:19-05:00
Days remaining
50
Protocol
TLSv1.3
Cipher
TLS_AES_128_GCM_SHA256

Security headers

3 active
—
HSTSNot detected
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
—
X-Frame-OptionsNot detected
✓
Referrer PolicyImplemented
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
151.101.1.29, 151.101.129.29, 151.101.193.29, 151.101.65.29
47,30 ms
Cloudflare
1.1.1.1
151.101.1.29, 151.101.129.29, 151.101.193.29, 151.101.65.29
19,27 ms
Quad9
9.9.9.9
151.101.1.29, 151.101.129.29, 151.101.193.29, 151.101.65.29
36,57 ms
OpenDNS
208.67.222.222
151.101.1.29, 151.101.129.29, 151.101.193.29, 151.101.65.29
32,15 ms
AdGuard
94.140.14.14
151.101.1.29, 151.101.129.29, 151.101.193.29, 151.101.65.29
50,17 ms

IP, geolocation and ASNAssociated network information

151.101.65.29

No data
success
No
country
region
city
asn
organization
isp

151.101.1.29

No data
success
No
country
region
city
asn
organization
isp

151.101.129.29

No data
success
No
country
region
city
asn
organization
isp

151.101.193.29

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

mxa-009e5101.gslb.pphosted.com

Port 25: Closed/unreachable - 29.4 ms - 
Port 465: Closed/unreachable - 84.7 ms - 
Port 587: Closed/unreachable - 79.4 ms -

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