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https://cbssports.com

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
84
GRADE
B
FIX
1
REVIEW
4
PASS
4
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
9
4 PASS 4 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.

B
Redirect Chain
1 redirect(s), 1899 ms total
REVIEW
1 redirect(s), 1899 ms total
Info::
Single redirect
Got: https://cbssports.com → https://www.cbssports.com/ (301)
Info::
WWW normalization redirect
Warning::
Redirect overhead: 1899 ms total
Got: 1899 ms

https://cbssports.com

5 ms · HTTP/1.1

301

https://www.cbssports.com/

1894 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://cbssports.com3015 msHTTP/1.1ContentServer
2https://www.cbssports.com/2001894 msHTTP/1.1ContentServer

See the visual redirect chain in the HTTP Probe tab →

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.cbssports.com/
200https://cbssports.com/

Inconsistent — duplicate content risk

HTTP → HTTPS

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

Consistent

B
TLS Certificate Expiry & Recommendations
225 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

225
days left
0d 30d 60d 90d+

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
A+
DNS Records
4 A records, 38 ms lookup
PASS
4 A records, 38 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 151.101.129.188, 151.101.193.188, 151.101.65.188, 151.101.1.188
Info::
No IPv6 (AAAA) records
Info::
6 nameserver(s) configured
Got: dns4.p09.nsone.net, dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.com
Info::
5 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: 38 ms
Got: 38 ms
A151.101.129.188, 151.101.193.188, 151.101.65.188, 151.101.1.188
AAAA—
CNAME—
NSdns4.p09.nsone.net, dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.com
MX
1 aspmx.l.google.com
5 alt1.aspmx.l.google.com
5 alt2.aspmx.l.google.com
10 alt3.aspmx.l.google.com
10 alt4.aspmx.l.google.com
TXT
3mrrgbk4lha8abapsmiobhp8s5
ahrefs-site-verification_a090368a0301a92f7320d0221998037d0a4585cfac2ea7f19842b55...
google-site-verification=k00qP63B7I_i-0TVn5Eqh-QbKXfKro8RwhpW3_XayAk
google-site-verification=924FpfCNPRmqrstlCcJiJWjiRCTObiD_OpI1yShG0VQ
google-site-verification=xtgF7eMz3efzfF9vwLpBo1t3jF4QVIM265EuWW7CsxE
google-site-verification=7KhwGKbfHTMs-3ghfLI8IayLIaEFRxrxDb5huSowV68
846378e48f564aceadf8b5944a418b11
twilio-domain-verification=91f2c5fde44fc0f3de01fcacca1cc5e8
google-site-verification=seqPfXcE3hxECHadwx9tQ5B-5metDhTvShoA3lNKv0Y
rl9sd60niusdkkdtvebm64t178
google-site-verification=R6z2cD_NhNYGlBzhXnXvvyswu3JIAUtqK6TKKhRPxuo
google-site-verification:gMrfhyU8ZjouP9ZS1LXDaslzsCC-IayCYgXRkGVaiig
SPF v=spf1 include:_spf.google.com ~all
google-site-verification=Ym96sYpycRvo4gcUpjPx0T9cZsK5T4EoSyJWKo991IE
CAALookup not available with standard resolver
Resolved in 38 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+
Crawlability
robots.txt present, sitemap with 30 URLs
PASS
robots.txt present, sitemap with 30 URLs
Info::
robots.txt is present
Got: 939 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 30 entries
Info::
Sitemap index with 30 child sitemaps
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 939 B Sitemaps referenced 9 User-agents *, GPTBot Blocking No — crawling allowed
User-agent: *
Disallow: /info/search
Disallow: /data/*
Disallow: /partners
Disallow: /component/*
Disallow: /get-id*
Disallow: /get-pass*
Disallow: /login*
Disallow: /logout*
Disallow: /player/avia*
Disallow: /registration*
Disallow: /user*
Disallow: /user/login*
Disallow: /user/logout*
Disallow: /watch/navigation-api
Disallow: /*?*sortdir=*
Disallow: /*?*sortcol=*
Disallow: /2/

User-agent: GPTBot
Disallow: /

Sitemap: https://www.cbssports.com/index-sitemap.xml
Sitemap: https://www.cbssports.com/sitemaps/all-news-sitemap.xml
Sitemap: https://www.cbssports.com/news-index-sitemap.xml
Sitemap: https://www.cbssports.com/news-betting-sitemap.xml
Sitemap: https://www.cbssports.com/news-fantasy-sitemap.xml
Sitemap: https://www.cbssports.com/news-gametracker-sitemap.xml
Sitemap: https://www.cbssports.com/news-sitemap.xml
Sitemap: https://www.cbssports.com/watch/sitemap.xml
Sitemap: https://www.cbssports.com/watch/index-sitemap.xml
sitemap.xml 200 OK
Type Sitemap Index URLs 30 entries Valid XML Yes
Child Sitemaps:
A+
Domain Intelligence
cbssports.com — via MarkMonitor Inc., 30 years, 4 months old, hosted on Fastly
PASS
cbssports.com — via MarkMonitor Inc., 30 years, 4 months old, hosted on Fastly
Info::
Domain registered until May 9, 2027 (1 years 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: Fastly
Got: AS54113
Domain expiry

329 days

May 9, 2027

SSL certificate

225 days

Issued by Sectigo Limited

Domain age

30 years, 4 months

Registered May 8, 1996

DNSSEC

Not enabled

Protects against DNS spoofing

Hosting

Fastly

ASN AS54113

151.101.65.188

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 May 8, 1996 (30 years, 4 months ago)
Expires May 9, 2027 (1 years)
Last Updated April 7, 2026
Name Servers dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.com
DNSSEC Not enabled
Hosting
IP Address 151.101.65.188
ASN AS54113 (FASTLY - Fastly, Inc., US)
Provider Fastly
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 36 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
30 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
0 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
5 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
36 ms
Total Time Total request time from DNS lookup through full response.
36 ms

Connection waterfall

DNS Lookup 30 ms TCP Connect 0 ms TLS Handshake 5 ms Server Processing 1 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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