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Total

DNS

Email

Security

Network

Availability

Domainvrbo.com

IPv43

IPv60

MX records2

StatusActive

Domain technical report

Too Many Requests

vrbo.com

Generated: 2026-08-08T22:29:22-05:00 · Cached result

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IPv43

IPv60

MX2

NS10

DiagnosticsMain findings and recommendations

✓

IPv4 (A)30 / 30 pts · Dns

3 IPv4 address(es) detected.

IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓

Name server redundancy20 / 20 pts · Dns

10 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 policy0 / 5 pts · Dns

Certificate authority restriction.

DNS propagation0 / 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

80 day(s) remaining.

✓

Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

HTTP security headers12 / 35 pts · Security

3 of 9 evaluated headers detected.

✓

PTR reverse DNS30 / 30 pts · Network

PTR: a23-33-29-197.deploy.static.akamaitechnologies.com

✓

IPv4 diversity35 / 35 pts · Network

Two or more IPv4 addresses receive full points.

IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓

DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

HTTP response0 / 40 pts · Availability

HTTP/2 429

✓

HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

3 record(s)

23.33.29.197
23.33.29.206
23.33.29.210

AAAA

0 record(s)

—

Not configured

CNAME

0 record(s)

—

Not configured

MX

2 record(s)

10 mxb.expediagroup.com.
10 mxa.expediagroup.com.

TXT

30 record(s)

"5ctfvm6las9i0brfbfmbsb644k"
"_globalsign-domain-verification=d54rFBsUag6X_qZKJTMGIUZQ3Mv9u5qhgcHJ_OWT-C"
"_n55turh3eli6u6vey4n9x9tp7rpa8bl"
"q665mfsh7vy106mwvxgw2fry1tt7mc8r"
"v=spf1 a:zgateway.zuora.com include:_netblocks.google.com include:spf.mandrillapp.com include:servers.mcsv.net include:mktomail.com include:_spf.salesforce.com ip4:198.175.56.0/24 ip4:198.151.49.0/24 ~all"
"1wolbrqwoCObdxC9G93EA76bPvlWON5svPEymxv9VJX2piJNpB2fvTEx9AuBb+CeO4F+ti99rtfT9FgggZSfFA=="
"ptj8dr6ughomcut7nus15sh1a9"
"brfqmb6q6tm5tby78rmvgprpdghk3jnf"
"apple-domain-verification=IFbG8GNo1LMAFWVc"
"google-site-verification=2OCAEpwy7Vv5-nn1RtZi9G_Rke-cjJQDlxE5SCzcT30"
"MS=ms18587922"
"_globalsign-domain-verification=lQgTOD8dWU_8nHyzjHGJ39ncrI45HenuNvKKTckDhn"
"atlassian-domain-verification=BoDCBNyHJzHh97Myx/Z4n3grU8sMEGR10Mi8CdpStC01PdMAuIARlKP/odGI7CvN"
"slack-domain-verification=7yM0PM3dCrAA1eDe4Q2iRnE8xEDQiAdjBXtszZbA"
"apple-domain-verification=nBx_zynGhN20XhjOhYF49B7BD5JbZAuW2gbPVDPrVVk"
"_globalsign-domain-verification=Fw09cFhmPL_-Bfg6BV5_NkyDEkXJfmQd4uPViX560A"
"Validity-DomainVerification=M7anjkdLSIe279_lLHGI129qQ="
"facebook-domain-verification=kj7l4cwqftpopbeord2swqwepbsp4o"
"docusign=3d8fbf3d-d176-4b88-b961-e2743b9c9161"
"spf2.0/pra include:_auth.messagegears.net -all"
"mixpanel-domain-verify=0e7d28f7-e5c2-4e51-b4f9-75be77f1b088"
"qkvhw6xtcf77fz4xkq81h75rpb0ws0tr"
"adobe-idp-site-verification=b41c23aaa74626ffffc55a59a6acf723e991ccd6604e9b4b6e215e8ef62f0e8e"
"v=BIMI1; l=https://csvcus.homeaway.com/rsrcs/cdn-logos/4.5.0/sitename/vrbo/web/logo.svg; a=;"
"smartsheet-site-validation=70RJ3RRXAtFWl_DnBGzP43VTvl2SnOfZ"
"dropbox-domain-verification=nfxk5s331hym"
"_globalsign-domain-verification=cN-L6rAFen7Gz3tem3kDc7GS_3StXzPYkKEoy8lWi0"
"miro-verification=d36744c01c72c4c0e036eacc18ffe55264b3bf81"
"_1h2u4a9r01g69fdyijlec2r1wcdwjgg"
"_globalsign-domain-verification=OYfE_CcZQWFlEEOrR5yVCfCtmiQrm0bBdyUAJyg3qE"

NS

10 record(s)

pdns4.ultradns.org.
dns4.p09.nsone.net.
dns2.p09.nsone.net.
pdns6.ultradns.co.uk.
pdns1.ultradns.net.
pdns2.ultradns.net.
pdns3.ultradns.org.
dns1.p09.nsone.net.
dns3.p09.nsone.net.
pdns5.ultradns.info.

SOA

1 record(s)

pdns1.ultradns.net. domains.expediagroup.com. 1657295469 43200 7200 1209600 3600

SPF

Configured

v=spf1 a:zgateway.zuora.com include:_netblocks.google.com include:spf.mandrillapp.com include:servers.mcsv.net include:mktomail.com include:_spf.salesforce.com ip4:198.175.56.0/24 ip4:198.151.49.0/24 ~all

DMARC

Configured

v=DMARC1; p=reject; adkim=s; aspf=r; fo=1; pct=100; rua=mailto:jlavhtnn@ag.dmarcian.com,mailto:expedia@rua.netcraft.com; ruf=mailto:jlavhtnn@fr.dmarcian.com,mailto:expedia@ruf.netcraft.com

DKIM

Selector selector1

v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAoVfCuA8JJ2QGKIyhoZguKc7MHnxRxpFlqIPZhdqZSzoSg4rREvl3lz+UQGZ0THzqoCaVqLIQWAATZm3KzFo9ZBqbM6d60BthnLGU1KSGYZQMVEwZO8UJ7v9RViS3CmrOphQD61YFENmtq/SQ8tlHJhHIp7iX4b17xg7YiN6fSRC2hDbrvYD1838tZcDxNv+fvSYrbaR6zH5xCLYUVYYzousnaK2BZhF9tzrK19s7rsLPt9RKQcr/EY4IsMo/tD8GgxlIy+bhImSZX2QMtVLfCUxw3a/NE4y/lb6V9of0RB+Ej87UXFEVgvF+RShwhGyuPvPSGfqdfRKHNGgFCn3KJQIDAQAB;

Analyzed webpageMetadata and HTTP response

Title and description

Extracted

Title

Too Many Requests

Description

Final URL

https://www.vrbo.com/

HTTP status

429

HTTP

Status

HTTP/2 429

Final URL

https://www.vrbo.com/

Version

Server

istio-envoy

X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available

Yes

Issuer

DigiCert Inc

vrbo.com

Valid from

2025-10-26T19:00:00-05:00

Valid until

2026-10-28T18:59:59-05:00

Days remaining

Protocol

TLSv1.3

Cipher

TLS_AES_256_GCM_SHA384

Security headers

3 active

✓

HSTSImplemented

—

Content Security PolicyNot detected

✓

X-Content-Type-OptionsImplemented

✓

X-Frame-OptionsImplemented

—

Referrer PolicyNot detected

—

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

Review

Differences detected

5 public resolvers queried.

ResolverServerResultLatency

Google

8.8.8.8

23.45.123.33, 23.45.123.5

34,82 ms

Cloudflare

1.1.1.1

23.33.29.197, 23.33.29.206, 23.33.29.210

25,91 ms

Quad9

9.9.9.9

23.33.29.197, 23.33.29.206, 23.33.29.210

47,20 ms

OpenDNS

208.67.222.222

23.33.29.197, 23.33.29.206, 23.33.29.210

25,46 ms

AdGuard

94.140.14.14

23.44.201.10, 23.44.201.26

42,72 ms

IP, geolocation and ASNAssociated network information

23.33.29.197

No data

success

country

region

city

asn

organization

isp

23.33.29.206

No data

success

country

region

city

asn

organization

isp

23.33.29.210

No data

success

country

region

city

asn

organization

isp

Visitor information

Visitor

216.73.217.62

reverse

country

country_code

region

city

latitude

longitude

isp

organization

asn

timezone

browser

Other

language

user_agent

Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

is_bot

Yes

cloudflare

SMTPEmail port connectivity

mxb.expediagroup.com

Port 25: Closed/unreachable - 0.7 ms - 
Port 465: Closed/unreachable - 4019.9 ms - 
Port 587: Closed/unreachable - 4029.6 ms -

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