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https://nbcnews.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
87
GRADE
B
FIX
1
REVIEW
3
PASS
5
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
5 PASS 3 REVIEW 1 FIX
D
CDN & Delivery
Action
No CDN detected
FIX
No CDN detected
Warning::
No CDN detected
A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them.
No CDN detected

Consider using a CDN to improve global delivery speed and reduce origin load.

C
IPv6 Readiness
Action
No IPv6 support
REVIEW
No IPv6 support
Info::
No IPv6 (AAAA) records found
IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.
No IPv6 Support
About 40% of internet users have IPv6. Consider adding AAAA records.

IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity.

Why this matters

No AAAA records — same impact as 'no IPv6 (AAAA) records'; IPv6-preferring clients pay extra latency falling back to IPv4.

Source: Google IPv6 stats

B
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
REVIEW
www/non-www, trailing slash, HTTP→HTTPS
Critical::
Both www and non-www versions serve content
Got: Both variants return 200 Expected: One variant 301-redirects to the other
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

200https://www.nbcnews.com/
200https://nbcnews.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

301http://nbcnews.com/ → https://www.nbcnews.com

Consistent

B
TLS Certificate Expiry & Recommendations
162 days until leaf cert expires — 4 issues to address
REVIEW

Certificate validity

162
days left
0d 30d 60d 90d+

Recommended actions

  • Prefer TLS 1.3 — TLS 1.2 is acceptable but TLS 1.3 removes RSA key exchange and improves latency
  • 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
A+
DNS Records
4 A records, 120 ms lookup
PASS
4 A records, 120 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 44.219.25.60, 52.37.236.218, 34.206.62.195, 54.69.127.167
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: nsa1.nbcnews.com, nsa6.nbcnews.com, nsa3.nbcnews.com, nsa5.nbcnews.com, nsa4.nbcnews.com, nsa2.nbcnews.com
Info::
4 mail exchanger(s) configured
Info::
CAA records not checked
CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.
Info::
SPF record present in TXT
Info::
DNS resolution time: 120 ms
Got: 120 ms
A44.219.25.60, 52.37.236.218, 34.206.62.195, 54.69.127.167
AAAA—
CNAME—
NSnsa1.nbcnews.com, nsa6.nbcnews.com, nsa3.nbcnews.com, nsa5.nbcnews.com, nsa4.nbcnews.com, nsa2.nbcnews.com
MX
10 mxa-00176a04.gslb.pphosted.com
10 mxb-00176a04.gslb.pphosted.com
20 mx0b-00176a04.pphosted.com
20 mx0a-00176a04.pphosted.com
TXT
google-site-verification=MZHucJEiy3hHkD_EyCfnCM52zwIUSoz6wVPXyIc1Fe8
status-page-domain-verification=g1mtf45mvmsg
_73rsdvo67y994bm3vesxc772tqnxjsp
MS=ms47743650
SPF v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com include:amazonses.com ~all
google-site-verification=dMf4cxtcxKlWchKvPlULwDZi8XpI9-ARqe8j2mGmi4Y
v=msv1 t=845BDA23-4A70-4CCA-BF0C-3BECFC22A772
facebook-domain-verification=kqjnlmeuf3c99pest8ha03obc0rzo9
CAALookup not available with standard resolver
Resolved in 120 ms

CAA record lookup requires a specialized DNS resolver. This check will be available in a future update.

Why this matters

Informational: CAA (Certification Authority Authorization) records weren't checked in this scan.

A
Redirect Chain
1 redirect(s), 818 ms total
PASS
1 redirect(s), 818 ms total
Info::
Single redirect
Got: https://nbcnews.com → https://www.nbcnews.com (301)
Info::
WWW normalization redirect
Info::
Redirect overhead: 818 ms total
Got: 818 ms

https://nbcnews.com

688 ms · HTTP/1.1

301

https://www.nbcnews.com

130 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://nbcnews.com301688 msHTTP/1.1
2https://www.nbcnews.com200130 msHTTP/1.1nginx

See the visual redirect chain in the HTTP Probe tab →

A+
Crawlability
robots.txt present, sitemap with 658 URLs
PASS
robots.txt present, sitemap with 658 URLs
Info::
robots.txt is present
Got: 9598 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 658 entries
Info::
Sitemap index with 658 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 9598 B Sitemaps referenced 5 User-agents omgili, DataForSeoBot, OAI-SearchBot, peer39_crawler/1.0, Twitterbot, AmazonBot, MistralAI-User, PerplexityBot, Scrapy, NewsNow, AwarioRssBot, ClaudeBot, Claude-Web, Claude-SearchBot, omgilibot, Perplexity-User, ChatGPT-User, cohere-ai, GPTBot, Applebot-Extended, meta-externalagent, Amazonbot, anthropic-ai, Google-Extended, peer39_crawler, news-please, *, AwarioSmartBot, CCBot, FacebookBot, Meta-ExternalAgent, TurnitinBot, Bytespider, Claude-User, Diffbot, magpie-crawler Blocking No — crawling allowed
User-agent: *
Disallow: /search$
Disallow: /search/
Disallow: /pages/search/
Disallow: /pages/news-connect
Disallow: /error404.aspx
Disallow: /widget/
Disallow: /*ns/local_news*
Disallow: /bentoapi/
Disallow: /akam/
Disallow: /sigma.html

Disallow: /*?*canonicalCard=
User-agent: Twitterbot
Allow: /*?*canonicalCard=

# Disallow Bots (Allow /select only)
User-agent: Amazonbot
User-agent: AmazonBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: anthropic-ai
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: Applebot-Extended
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: AwarioRssBot
User-agent: AwarioSmartBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: Bytespider
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: CCBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: ChatGPT-User
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: ClaudeBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: Claude-Web
User-agent: Claude-User
User-agent: Claude-SearchBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: cohere-ai
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: DataForSeoBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: Diffbot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: FacebookBot
Disallow: /
Allow: /select
Allow: /select/

User-agent: Google-Extended
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: GPTBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: magpie-crawler
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: Meta-ExternalAgent
User-agent: meta-externalagent
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: MistralAI-User
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: NewsNow
Disallow: /
Allow: /select
Allow: /select/

User-agent: news-please
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: OAI-SearchBot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: omgili
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: omgilibot
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: peer39_crawler
User-agent: peer39_crawler/1.0
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: PerplexityBot
User-agent: Perplexity-User
Disallow: /
Allow: /select
Allow: /select/
Allow: /information/nbc-news-info/about-nbc-news-digital-n1232178
Allow: /subscribe/supplemental-terms
Allow: /information/nbc-news-info/contact-us-n1232521
Allow: /news/us-news/nbc-news-digital-editors-n893846
Allow: /tips
Allow: /tips/
Allow: /information/nbc-news-info/closed-captioning-n1307063

User-agent: Scrapy
Disallow: /
Allow: /select
Allow: /select/

User-agent: TurnitinBot
Disallow: /
Allow: /select
Allow: /select/

# Sitemaps
Sitemap: https://www.nbcnews.com/sitemap/nbcnews/sitemap-index
Sitemap: https://www.nbcnews.com/sitemap/nbcnews/sitemap-news
Sitemap: https://www.nbcnews.com/sitemap/nbcnews/sitemap-curations
Sitemap: https://www.nbcnews.com/sitemap/nbcnews/sitemap-select.xml
Sitemap: https://www.nbcnews.com/politics/election-results/sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 658 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
nbcnews.com — via MarkMonitor Inc., 29 years, 2 months old, hosted on AWS
PASS
nbcnews.com — via MarkMonitor Inc., 29 years, 2 months old, hosted on AWS
Info::
Domain registered until Jun 25, 2027 (1 years, 2 months remaining)
Info::
DNSSEC is not enabled
DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.
Info::
Registrar: MarkMonitor Inc.
Warning::
Registrar lock is NOT enabled
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.
Info::
Hosting: AWS
Got: AS16509
Domain expiry

374 days

June 25, 2027

SSL certificate

162 days

Issued by DigiCert Inc

Domain age

29 years, 2 months

Registered June 26, 1997

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

AWS

ASN AS16509

54.69.127.167

Registrar

MarkMonitor Inc.

Unlocked 6 NS records
Expiry timeline
Today
+1 year
Domain expiry SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable DNSSEC to protect visitors from DNS spoofing
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar MarkMonitor Inc.
Created June 26, 1997 (29 years, 2 months ago)
Expires June 25, 2027 (1 years, 2 months)
Last Updated May 24, 2025
Name Servers nsa1.nbcnews.com, nsa2.nbcnews.com, nsa3.nbcnews.com, nsa4.nbcnews.com, nsa5.nbcnews.com, nsa6.nbcnews.com
DNSSEC Not enabled
Hosting
IP Address 54.69.127.167
ASN AS16509 (AMAZON-02 - Amazon.com, Inc., US)
Provider AWS
Data source: rdap (0.3s)

DNSSEC protects against DNS spoofing attacks. While not required, enabling DNSSEC adds an additional layer of security. Contact your DNS provider to enable it.

Why this matters

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.

Why this matters

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

A
HTTP Probe Timing
Total 576 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
163 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
102 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
206 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
576 ms
Total Time Total request time from DNS lookup through full response.
577 ms

Connection waterfall

DNS Lookup 163 ms TCP Connect 102 ms TLS Handshake 206 ms Server Processing 105 ms Content Transfer 0 ms
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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