Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.CIPv6 ReadinessActionNo IPv6 supportREVIEW
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.
Source: Google IPv6 stats
BCrawlabilityrobots.txt present, no sitemapREVIEW
A sitemap helps search engines discover and index your pages more efficiently.
No sitemap.xml — Google relies on crawl-graph discovery alone, slowing indexing of deep or fresh URLs.
Learn more ▾ ▴
A sitemap accelerates Google's discovery of new and updated content. Most CMSes auto-generate one; static-site frameworks need a build-step plugin. Reference it from robots.txt and submit in Search Console to confirm Google can fetch it.
Source: sitemaps.org / Google Search Central
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
#
# General bots
#
user-agent: *
#hotel
disallow: /Hotel-Search
disallow: /hotel-search
disallow: /search?
disallow: /*/search?
disallow: /ugc/urs/api/hotelreviews/hotel/HOTELID/
disallow: /LastBooking/ElapsedTime
disallow: /*chkin=*
disallow: /*chkout=*
disallow: /HotelCheckout
disallow: /Checkout
disallow: /checkout
disallow: /HotelBookingConfirmation
disallow: /en-au/
disallow: /en-nz/
#flight
disallow: /Flights-Search
disallow: /Flight-Information
disallow: /Flight-SearchResults
disallow: /Flights-BagFees
disallow: /Details
disallow: /FlightCheckout
disallow: /Confirmation-Flight
#package
disallow: /MultiItemCheckout
disallow: /MultiItemBookingConfirmation
disallow: /flexibleshopping
#car
disallow: /carsearch
disallow: /CarCheckout
#activities
disallow: /things-to-do/search?
disallow: /things-to-do/*/search?
disallow: /*/things-to-do/search
disallow: /things-to-do/reviews-external$
#cruise
disallow: /Cruise-Search
disallow: /Cruise-CabinCategory
disallow: /CruiseCheckout
#other
disallow: /legacyGOTO
disallow: /go/
disallow: /info/
disallow: /trips/
disallow: /Search-Results
disallow: /user/createaccount
disallow: /signup?*
disallow: /login?*
#test-seo
disallow: /api/uisprime/track
disallow: /trvl-px/
disallow: /egcs/v2/collect
disallow: /api/ucs/shortlist/
disallow: /api/v4/typeahead/
disallow: /p/home
disallow: /*/p/home
disallow: /auth/
disallow: /*/auth/
disallow: /*/sso/
#
# Ads
#
user-agent: google-hoteladsverifier
user-agent: Mediapartners-Google
user-agent: AdsBot-Google-Mobile
user-agent: AdsBot-Google
user-agent: AdIdxBot
allow: /
#test-seo
disallow: /api/uisprime/track
disallow: /trvl-px/
disallow: /egcs/v2/collect
disallow: /api/ucs/shortlist/
disallow: /api/v4/typeahead/
#
# SemrushBot
#
user-agent: SemrushBot
disallow: /
#
# AI Search
#
user-agent: OAI-SearchBot
user-agent: ChatGPT-User
user-agent: PerplexityBot
user-agent: Perplexity-User
user-agent: Claude-User
user-agent: Claude-SearchBot
allow: /
disallow: /p/home
disallow: /*/p/home
disallow: /auth/
disallow: /*/auth/
disallow: /*/sso/
No sitemap found
Adding a sitemap helps search engines discover your pages.
BTLS Certificate Expiry & Recommendations190 days until leaf cert expires — 3 issues to addressREVIEW
Certificate validity
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- Enable DNSSEC on your domain for DNS spoofing protection
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
BCDN & DeliveryAkamaiREVIEW
A+DNS Records2 A records, 14 ms lookupPASS
| A | 2.18.127.230, 2.18.127.245 |
| AAAA | — |
| CNAME | — |
| NS | dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk |
| MX | 10 mxb.expediagroup.com 10 mxa.expediagroup.com |
| TXT | MS=ms18587922 5ctfvm6las9i0brfbfmbsb644k ptj8dr6ughomcut7nus15sh1a9 _1h2u4a9r01g69fdyijlec2r1wcdwjgg _hcclwdwurdpu15oa3q0p9qnhsmz334n _n55turh3eli6u6vey4n9x9tp7rpa8bl brfqmb6q6tm5tby78rmvgprpdghk3jnf q665mfsh7vy106mwvxgw2fry1tt7mc8r qkvhw6xtcf77fz4xkq81h75rpb0ws0tr dropbox-domain-verification=nfxk5s331hym apple-domain-verification=IFbG8GNo1LMAFWVc docusign=3d8fbf3d-d176-4b88-b961-e2743b9c9161 spf2.0/pra include:_auth.messagegears.net -all Validity-DomainVerification=M7anjkdLSIe279_lLHGI129qQ= miro-verification=d36744c01c72c4c0e036eacc18ffe55264b3bf81 facebook-domain-verification=kj7l4cwqftpopbeord2swqwepbsp4o mixpanel-domain-verify=0e7d28f7-e5c2-4e51-b4f9-75be77f1b088 smartsheet-site-validation=70RJ3RRXAtFWl_DnBGzP43VTvl2SnOfZ slack-domain-verification=7yM0PM3dCrAA1eDe4Q2iRnE8xEDQiAdjBXtszZbA google-site-verification=2OCAEpwy7Vv5-nn1RtZi9G_Rke-cjJQDlxE5SCzcT30 apple-domain-verification=nBx_zynGhN20XhjOhYF49B7BD5JbZAuW2gbPVDPrVVk _globalsign-domain-verification=Fw09cFhmPL_-Bfg6BV5_NkyDEkXJfmQd4uPViX560A _globalsign-domain-verification=OYfE_CcZQWFlEEOrR5yVCfCtmiQrm0bBdyUAJyg3qE _globalsign-domain-verification=cN-L6rAFen7Gz3tem3kDc7GS_3StXzPYkKEoy8lWi0 _globalsign-domain-verification=d54rFBsUag6X_qZKJTMGIUZQ3Mv9u5qhgcHJ_OWT-C _globalsign-domain-verification=lQgTOD8dWU_8nHyzjHGJ39ncrI45HenuNvKKTckDhn 1wolbrqwoCObdxC9G93EA76bPvlWON5svPEymxv9VJX2piJNpB2fvTEx9AuBb+CeO4F+ti99rtfT9Fgg... adobe-idp-site-verification=b41c23aaa74626ffffc55a59a6acf723e991ccd6604e9b4b6e21... v=BIMI1; l=https://csvcus.homeaway.com/rsrcs/cdn-logos/4.5.0/sitename/vrbo/web/l... atlassian-domain-verification=BoDCBNyHJzHh97Myx/Z4n3grU8sMEGR10Mi8CdpStC01PdMAuI... SPF v=spf1 a:zgateway.zuora.com include:_netblocks.google.com include:spf.mandrillap... |
| CAA | Lookup not available with standard resolver |
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.
ARedirect Chain1 redirect(s), 341 ms totalPASS
https://vrbo.com
29 ms · HTTP/1.1
https://www.vrbo.com/
312 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://vrbo.com | 301 | 29 ms | HTTP/1.1 | AkamaiGHost |
| 2 | https://www.vrbo.com/ | 429 | 312 ms | HTTP/1.1 | istio-envoy |
See the visual redirect chain in the HTTP Probe tab →
A+URL Variantswww/non-www, trailing slash, HTTP→HTTPSPASS
www / non-www
HTTP → HTTPS
Consistent
A+Domain Intelligencevrbo.com — via GoDaddy Corporate Domains, LLC, 30 years, 1 months old, hosted on AkamaiPASS
384 days
August 5, 2027
190 days
Issued by DigiCert Inc
30 years, 1 months
Registered July 30, 1996
Not enabled
Protects against DNS spoofing
Akamai
ASN AS20940
2.18.127.230
GoDaddy Corporate Domains, LLC
Expiry timeline
Recommended actions
- Enable DNSSEC to protect visitors from DNS spoofing
- Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Without DNSSEC, an attacker who can poison your DNS can hijack your domain — and SSL certs alone don't stop them.
Learn more ▾ ▴
DNSSEC adds cryptographic signatures to DNS records, preventing forged responses from poisoning resolver caches. Without it, an attacker who controls the network path can redirect your domain to a malicious server before any HTTPS handshake happens. Most modern registrars (Cloudflare, Google Domains, Route 53) enable it with one toggle.
Source: ICANN / RFC 4033
The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers.
Without registrar lock, an attacker who phishes your registrar credentials can transfer the domain in minutes — total brand hijack.
Learn more ▾ ▴
Registrar lock (clientTransferProhibited, clientUpdateProhibited, clientDeleteProhibited) requires extra verification before any transfer/update/delete. Every major registrar offers it free. Combined with 2FA on your registrar account, it's the strongest defense against domain hijacking.
Source: ICANN / domain-security best practice