Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.DURL VariantsActionwww/non-www, trailing slash, HTTP→HTTPSFIX
www / non-www
Inconsistent — duplicate content risk
HTTP → HTTPS
HTTP version does not redirect to HTTPS
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
BTLS Certificate Expiry & Recommendations42 days until leaf cert expires — 5 issues to addressREVIEW
Certificate validity
Recommended actions
- Extend HSTS max-age to at least 31536000 (1 year) to meet the preload list criteria
- 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
BCDN & DeliveryAkamaiREVIEW
A+DNS Records2 A records, 8 ms lookupPASS
| A | 23.44.229.205, 23.44.229.217 |
| AAAA | — |
| CNAME | — |
| NS | a16-65.akam.net, a2-64.akam.net, a7-66.akam.net, a1-196.akam.net, a13-66.akam.net, a22-64.akam.net |
| MX | 10 mxb-00176a04.gslb.pphosted.com 10 mxa-00176a04.gslb.pphosted.com 20 mx0a-00176a04.pphosted.com 20 mx0b-00176a04.pphosted.com |
| TXT | _ndyg416yahogevwlm0ic5nygguvju1k google-site-verification=g-qMWSt-zMMBUvOnxoKpZMYB3jGYvjhM3yB8Y8S3bSI v=DMARC1; p=none; fo=1; rua=mailto:nbcdmarc@leanplum.com;ruf=mailto:nbcdmarc@lea... adobe-idp-site-verification=d266b426130588069c9d5b76db345b36532058a66f36380fe985... google-site-verification=2HGzrNBjTm0TMAyT8psrvan75ZAlVTk7w6b32zTfyZA apple-domain-verification=9QkhxNWX7RdCNXHH atlassian-domain-verification=hnOZC9WrGJKmk3t83oojZWEloANSWU2MnvQDVGqe6laUY0fpn5... SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all _0hvq3mj8ey9btfivongdsjg6w3h8c2o google-site-verification=7cupNx2PaD4wrzsatdYeSL5i_h9_ZFrSYg7QXn_F0kM google-site-verification=xykurxD47PJxoK-w3FIi0n-0X5VfqO23pOjqVSKZLh0 amazonses:nrQBHklCs2OPiiTmnS3ISGeWKvTa4/zdzxdbRZYbFWY= MS=ms45776050 _z3odyixzmzrqpj9dpt4iaa531wybjt9 google-site-verification=gPUHl1w8jD2X6YgbA_ddBcWeX7HGX0jFoh1c63dyxw0
|
| 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), 88 ms totalPASS
https://nbc.com
40 ms · HTTP/1.1
https://www.nbc.com/
49 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://nbc.com | 301 | 40 ms | HTTP/1.1 | AkamaiGHost |
| 2 | https://www.nbc.com/ | 200 | 49 ms | HTTP/1.1 |
See the visual redirect chain in the HTTP Probe tab →
A+Crawlabilityrobots.txt present, sitemap with 31319 URLsPASS
#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used: http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html
User-agent: *
# Directories
Disallow: */includes/
Disallow: */misc/
Disallow: */modules/
Disallow: */profiles/
Disallow: */scripts/
Disallow: */themes/
Disallow: */internaluseronly/
# Files
Disallow: */CHANGELOG.txt
Disallow: */cron.php
Disallow: */INSTALL.mysql.txt
Disallow: */INSTALL.pgsql.txt
Disallow: */INSTALL.sqlite.txt
Disallow: */install.php
Disallow: */INSTALL.txt
Disallow: */LICENSE.txt
Disallow: */MAINTAINERS.txt
Disallow: */update.php
Disallow: */UPGRADE.txt
Disallow: */xmlrpc.php
# Paths (clean URLs)
Disallow: */admin/
Disallow: */comment/reply/
Disallow: */content/
Disallow: */file/
Disallow: */filter/tips/
Disallow: */node/
Disallow: */search
Disallow: */user/register/
Disallow: */user/password/
Disallow: */user/login/
Disallow: */user/logout/
# Paths (no clean URLs)
Disallow: */?q=admin/
Disallow: */?q=comment/reply/
Disallow: */?q=content/
Disallow: */?q=file/
Disallow: */?q=filter/tips/
Disallow: */?q=node/
Disallow: */?q=search/
Disallow: */?q=user/password/
Disallow: */?q=user/register/
Disallow: */?q=user/login/
Disallow: */?q=user/logout/
Disallow: */classic-tv/*
Disallow: */nightly-news/*
Disallow: */nightly-news/*
Disallow: */the-tonight-show/guest/*
Disallow: *one-app-preview*
# Disallow users paths
Disallow: /users*
# USA - Shows
Disallow: /the-biggest-loser*
Disallow: /temptation-island*
Disallow: /chrisley-knows-best*
Disallow: /wwe-raw*
Disallow: /miz-mrs*
Disallow: /growing-up-chrisley*
Disallow: /the-cromarties*
Disallow: /american-ninja-warrior-ninja-vs-ninja*
Disallow: /wwe-smackdown*
Disallow: /suits*
Disallow: /ncis-los-angeles*
Disallow: /beverly-hills-dog-show*
Disallow: /according-to-chrisley*
Disallow: /real-country*
Disallow: /the-sinner*
Disallow: /playing-house*
Disallow: /big-star-little-star*
Disallow: /inside-the-fbi-new-york*
Disallow: /the-radkes*
Disallow: /the-secret-life-of-kids*
Disallow: /queen-of-the-south*
Disallow: /motive*
Disallow: /eyewitness*
Disallow: /ncis*
Disallow: /how-low-will-you-go-*
Disallow: /pearson*
Disallow: /mr-robot*
Disallow: /what-s-cooking-with-julie-chrisley*
Disallow: /the-purge*
Disallow: /straight-up-steve-austin*
Disallow: /wwe-nxt*
Disallow: /treadstone*
Disallow: /dare-me*
Disallow: /briarpatch*
Disallow: /dirty-john*
Disallow: /cannonball*
# USA - Movies
Disallow: /marvel-s-avengers-age-of-ultron*
Disallow: /harry-potter-and-the-goblet-of-fire*
Disallow: /bridesmaids*
Disallow: /harry-potter-and-the-prisoner-of-azkaban*
Disallow: /fantastic-beasts-and-where-to-find-them*
Disallow: /harry-potter-and-the-deathly-hallows-part-1*
Disallow: /harry-potter-and-the-chamber-of-secrets*
Disallow: /harry-potter-and-the-deathly-hallows-part-2*
Disallow: /harry-potter-and-the-half-blood-prince*
Disallow: /wedding-crashers*
Disallow: /harry-potter-and-the-order-of-the-phoenix*
Disallow: /harry-potter-and-the-sorcerer-s-stone*
Disallow: /remember-the-titans*
Disallow: /fifty-shades-of-grey*
Disallow: /psych-the-movie*
Disallow: /brians-song*
Disallow: /our-kind-of-traitor*
Disallow: /everly*
Disallow: /ant-man*
Disallow: /fifty-shades-darker*
Disallow: /the-magnificent-seven*
Disallow: /boo-a-madea-halloween*
Disallow: /wizarding-world*
Disallow: /legally-blonde-2-red-white-and-blonde*
Disallow: /the-fast-and-the-furious-tokyo-drift*
Disallow: /captain-america-the-winter-soldier*
Disallow: /wanted*
Disallow: /red*
Disallow: /red-2*
Disallow: /san-andreas*
Disallow: /the-fast-and-the-furious*
Disallow: /fast-five*
Disallow: /2-fast-2-furious*
Disallow: /xxx-the-return-of-xander-cage*
Disallow: /madea-s-family-reunion*
Disallow: /madea-s-big-happy-family*
Disallow: /a-madea-christmas*
Disallow: /power-rangers*
Disallow: /that-awkward-moment*
Disallow: /silver-linings-playbook*
Disallow: /killing-them-softly*
Disallow: /the-hitman-s-bodyguard*
Disallow: /mandrake*
Disallow: /enough*
Disallow: /obsessed*
Disallow: /million-dollar-arm*
Disallow: /kill-switch*
Disallow: /the-twilight-saga-breaking-dawn-part-1*
Disallow: /twilight*
Disallow: /dirty-dancing-havana-nights*
Disallow: /the-twilight-saga-new-moon*
Disallow: /the-twilight-saga-eclipse*
Disallow: /the-twilight-saga-breaking-dawn-part-2*
Disallow: /la-la-land*
Disallow: /dear-john*
Disallow: /dirty-dancing*
Disallow: /pitch-black*
Disallow: /doctor-strange*
Disallow: /knocked-up*
Disallow: /the-whole-truth*
Disallow: /next-friday*
Disallow: /friday-after-next*
Disallow: /friday*
Disallow: /bad-boys*
Disallow: /bad-boys-ii*
Disallow: /the-perfect-match*
Disallow: /the-replacements*
Disallow: /it-s-complicated*
Disallow: /abduction*
Disallow: /extraction*
Disallow: /begin-again*
Disallow: /the-wedding-planner*
Disallow: /21-jump-street*
Disallow: /empire-state*
Disallow: /the-hangover*
Disallow: /seattle-superstorm*
Disallow: /fast-furious*
Disallow: /easy-a*
Disallow: /percy-jackson-the-olympians-the-lightning-thief*
Disallow: /john-wick*
Disallow: /john-wick-chapter-2*
Disallow: /what-to-expect-when-you-re-expecting*
Disallow: /boo-2-a-madea-halloween*
Disallow: /fifty-shades-freed*
Disallow: /tomb-raider*
Disallow: /law-abiding-citizen*
Disallow: /exposed*
Disallow: /speed*
Disallow: /a-knight-s-tale*
Disallow: /hitch*
Disallow: /the-holiday*
Disallow: /definitely-maybe*
Disallow: /never-been-kissed*
Disallow: /kingdom-of-heaven*
Disallow: /knowing*
Disallow: /drive-angry*
Disallow: /the-bourne-identity*
Disallow: /american-sniper*
Disallow: /the-bourne-supremacy*
Disallow: /the-bourne-ultimatum*
Disallow: /a-league-of-their-own*
Disallow: /sydney-white*
Disallow: /rush-hour*
Disallow: /rush-hour-2*
Disallow: /rush-hour-3*
Disallow: /death-wish*
Disallow: /angels-demons*
Disallow: /the-da-vinci-code*
Disallow: /forgetting-sarah-marshall*
Disallow: /inferno*
Disallow: /little-fockers*
Disallow: /shrek*
Disallow: /transporter-3*
Disallow: /walking-tall*
Disallow: /hook*
# Sitemap details.
Sitemap: https://www.nbc.com/sitemap.xml
Sitemap: https://www.nbc.com/nbc-insider/sitemap.xml
Sitemap: https://www.nbc.com/nbc-insider/sitemaps/sitemap_blog/sitemap.xml
Sitemap: https://www.nbc.com/nbc-insider/sitemaps/googlenews/sitemap.xml
Sitemap: https://www.nbc.com/video_sitemap.xml
# Sitemap for the Google PlayGuide.
Sitemap: https://api.nbc.com/googlePlayGuide/feed.json
A+Domain Intelligencenbc.com — via MarkMonitor Inc., 29 years, 3 months old, hosted on AkamaiPASS
334 days
June 16, 2027
42 days
Issued by DigiCert Inc
29 years, 3 months
Registered June 17, 1997
Not enabled
Protects against DNS spoofing
Akamai
ASN AS20940
23.44.229.217
MarkMonitor Inc.
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