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
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
Consistent
BTLS Certificate Expiry & Recommendations307 days until leaf cert expires — 4 issues to addressREVIEW
Certificate validity
Recommended actions
- Add includeSubDomains to the HSTS directive
- Add the preload directive and submit to hstspreload.org once max-age + includeSubDomains are in place
- 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
ADNS Records4 A records, 588 ms lookupPASS
| A | 151.101.1.55, 151.101.65.55, 151.101.129.55, 151.101.193.55 |
| AAAA | — |
| CNAME | — |
| NS | ns-1217.awsdns-24.org, ns-1897.awsdns-45.co.uk, ns-63.awsdns-07.com, ns-662.awsdns-18.net |
| MX | 5 hbo-com.mail.protection.outlook.com |
| TXT | 671988175-12122548 9b04608n3lxylrbgzmmzhpzngmryfdkz GM2s0rl8m2M8+aduzPSrdSx+Qov8kBguD3ScwDO3hssN091zF49gk1A7AMbBb/+XZe3Uwp06eTpym28Z... MS=ms69642137 PKFS/m8wm6RASUf1vmbVzuTnJMsxg522xk09UfzsaVhKKPqzeiqul7GeuCxDRWLRSkOO8lSEhPfChRa2... _globalsign-domain-verification=G6rAn-5s3I6Ukt7EpylRLtWbglxplS_gS1j_JEGoEy _globalsign-domain-verification=Nm83aY0luFmKaEsROwWuFmSDG1GpsRXe6rrIHF_-PB _globalsign-domain-verification=ZFOw8Gt29vHTv6SXbYvBumUzxAjlLsM150n6cu_sl8 _globalsign-domain-verification=gKLyHVs2-A8jjJCtFFMvdQQaGDVdh8ohZU0SmsDmAy _globalsign-domain-verification=y5vdurCbC4j5d7MV9vSxuv8uVCkhT1nhaj_gcfDJTR adobe-idp-site-verification=6b91c48785893991cc3cf88c073dbc3e4d101443ffbcd2859010... adobe-sign-verification=851df024b8fb3cd18463f3ca49e0a382 apple-domain-verification=5lqzlq9YCMRcc6Nc atlassian-domain-verification=joqe6L8dNi+aisGbB1XHQa0pDc53V2l0GQQRUtLEcr2997x0+r... cisco-ci-domain-verification=fa33a8661bbf3b1f9dff9344e3ac17f37de9632597126eda4eb... cloudhealth=7bffbad9-cff4-4761-add2-9e8d2702fe83 facebook-domain-verification=ikjv2tsvtbdjby9jzmndvqnh5eu3df google-site-verification=6NTd9bZvlQzGGYhk9F5NDpFYjzntMcPyZTQAmYXxbLE google-site-verification=9gePLUf80rMHYDmuPpE-ZwLjGvzkukgY49yjTOfnDtM google-site-verification=FyHIYNMYtacdeYPK7CFQexzcTapnqZU223BTKsahsXE google-site-verification=PPKvhksy5y9BY98aJv-Pbt5KEaBx56J97MhUGW2wp90 google-site-verification=YVE1XQiIPhIXOxPkAvqsaJPqfCHXQoqZrhwuwl9eXiI google-site-verification=kHBF6A_fqUd4bpgDkjBQSpi14Qvcv1BokGGHcIIsY1s google-site-verification=kihnMTsj1roc6QOJ3MtRzKmVcznr4-J7gra1tCchVo0 google-site-verification=zJEFSVfAzkOwA37-wHGgRsKEnQYAmOfW1nFrIRQ3dws lucidchart-verification=fv33o3sxxpyg83fkwnl1 miro-verification=1e01f8da769be1241fceefd9abf2c317dcd68323 postman-domain-verification=cd813d70bf99ae7071a4652b4a8f93ffcb1a7952d9302be5102d... smartsheet-site-validation.hbo.com=hDWT+iX//NWjhnuIwn6p0ABkODcnRz2ZFxti5GgtCjY= SPF v=spf1 include:hbo.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.va... |
| 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.
Slow DNS adds latency to every page load. Consider a faster DNS provider.
DNS resolution is slow — anycast DNS providers (Cloudflare, Route 53) typically resolve <50ms globally.
Source: DNS performance benchmarks
ARedirect Chain1 redirect(s), 210 ms totalPASS
https://hbo.com
106 ms · HTTP/1.1
https://www.hbo.com/
105 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://hbo.com | 308 | 106 ms | HTTP/1.1 | Varnish |
| 2 | https://www.hbo.com/ | 200 | 105 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 276 URLsPASS
User-agent: *
Sitemap: https://www.hbo.com/static.sitemap.hbo.xml
Disallow: /content/*
A+Domain Intelligencehbo.com — via MarkMonitor Inc., 31 years old, hosted on FastlyPASS
64 days
September 19, 2026
307 days
Issued by GlobalSign nv-sa
31 years
Registered September 20, 1995
Not enabled
Protects against DNS spoofing
Fastly
ASN AS54113
151.101.193.55
MarkMonitor Inc.
Expiry timeline
Recommended actions
- Renew the domain or enable auto-renewal to prevent accidental expiry
- 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