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https://nos.nl

Infrastructure

· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.
SCORE
100
GRADE
A+
FIX
0
REVIEW
1
PASS
8
INFO
0
Probed from New York, United Stated
200 OK
Checks
9
8 PASS 1 REVIEW
B
TLS Certificate Expiry & Recommendations
53 days until leaf cert expires — 3 issues to address
REVIEW

Certificate validity

53
days left
0d 30d 60d 90d+

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 OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+
DNS Records
4 A records, 12 ms lookup
PASS
4 A records, 12 ms lookup
Info::
Resolves to 4 IPv4 address(es)
Got: 13.32.241.12, 13.32.241.21, 13.32.241.97, 13.32.241.125
Info::
Has 8 IPv6 (AAAA) record(s)
Got: 2600:9000:2032:0:f:425b:9b80:93a1, 2600:9000:2032:1000:f:425b:9b80:93a1, 2600:9000:2032:4400:f:425b:9b80:93a1, 2600:9000:2032:5200:f:425b:9b80:93a1, 2600:9000:2032:5e00:f:425b:9b80:93a1, 2600:9000:2032:7200:f:425b:9b80:93a1, 2600:9000:2032:a600:f:425b:9b80:93a1, 2600:9000:2032:ac00:f:425b:9b80:93a1
Info::
4 nameserver(s) configured
Got: ns-311.awsdns-38.com, ns-823.awsdns-38.net, ns-1511.awsdns-60.org, ns-1582.awsdns-05.co.uk
Info::
1 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: 12 ms
Got: 12 ms
A13.32.241.12, 13.32.241.21, 13.32.241.97, 13.32.241.125
AAAA2600:9000:2032:0:f:425b:9b80:93a1, 2600:9000:2032:1000:f:425b:9b80:93a1, 2600:9000:2032:4400:f:425b:9b80:93a1, 2600:9000:2032:5200:f:425b:9b80:93a1, 2600:9000:2032:5e00:f:425b:9b80:93a1, 2600:9000:2032:7200:f:425b:9b80:93a1, 2600:9000:2032:a600:f:425b:9b80:93a1, 2600:9000:2032:ac00:f:425b:9b80:93a1
CNAME—
NSns-311.awsdns-38.com, ns-823.awsdns-38.net, ns-1511.awsdns-60.org, ns-1582.awsdns-05.co.uk
MX
10 nos-nl.mail.protection.outlook.com
TXT
MS=ms54114100
apple-domain-verification=cwxV9FeBqcSiNe6L
reftab-domain-verification=dc1dfdd2bf7152b1e5506238aca79276
SPF v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all
anthropic-domain-verification-na16s8=TfhXKjvDoFyCjn5ojodUfNFTW
google-site-verification=kPt6Gqfhcwbub0bxNVaLUy0vkDmIXgkW_NC_1qeXorM
google-site-verification=tAjb81nA-Pmw0bygOKbOfEIUheNCzYUoYpsayvQ877c
eHt52Z91IJwRuCaG5Di9VrJXYPeu0Mi6BhWU3l5YV21/q2tOdB9oKDxfh+SdtsVtBJBgEABUcHvnqtGH...
zmqs769E9GnRJBLhJUlXOGi0/7LoeiUjiuW9BgbKPJOpoms+KFshyjYk1zaI2LwWCTqhI3bvasgK6avx...
ahrefs-site-verification_593f5c84092841d8e877cd7383196907e8d474f3155ed146ea6fffc...
CAALookup not available with standard resolver
Resolved in 12 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
No redirects — direct access
PASS
No redirects — direct access
Info::
No redirects — direct access
Got: https://nos.nl

https://nos.nl

38 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://nos.nl20038 msHTTP/1.1nginx
A+
IPv6 Readiness
IPv6 reachable (2 ms)
PASS
IPv6 reachable (2 ms)
Info::
IPv6 is configured and reachable at 2600:9000:2032:0:f:425b:9b80:93a1, 2600:9000:2032:1000:f:425b:9b80:93a1, 2600:9000:2032:4400:f:425b:9b80:93a1, 2600:9000:2032:5200:f:425b:9b80:93a1, 2600:9000:2032:5e00:f:425b:9b80:93a1, 2600:9000:2032:7200:f:425b:9b80:93a1, 2600:9000:2032:a600:f:425b:9b80:93a1, 2600:9000:2032:ac00:f:425b:9b80:93a1
Got: 2 ms connect
IPv6 Ready
AAAA Records 2600:9000:2032:0:f:425b:9b80:93a1, 2600:9000:2032:1000:f:425b:9b80:93a1, 2600:9000:2032:4400:f:425b:9b80:93a1, 2600:9000:2032:5200:f:425b:9b80:93a1, 2600:9000:2032:5e00:f:425b:9b80:93a1, 2600:9000:2032:7200:f:425b:9b80:93a1, 2600:9000:2032:a600:f:425b:9b80:93a1, 2600:9000:2032:ac00:f:425b:9b80:93a1 Connection Reachable (2 ms)
A+
Crawlability
robots.txt present, sitemap with 53 URLs
PASS
robots.txt present, sitemap with 53 URLs
Info::
robots.txt is present
Got: 1259 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 53 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 1259 B Sitemaps referenced 3 User-agents *, CCBot, anthropic-ai, Omgilibot, AI2Bot, ImagesiftBot, cohere-ai, Meta-ExternalFetcher, Omgili, DuckAssistBot, PerplexityBot, Timpibot, DeepSeek, Google-Extended, Google-CloudVertexBot, Bytespider, Meta-ExternalAgent, YouBot, ChatGPT-User, GPTBot, Applebot-Extended, ClaudeBot, FacebookBot, Diffbot, Kangaroo Bot, Webzio-Extended Blocking No — crawling allowed
# www.robotstxt.org/
# www.google.com/support/webmasters/bin/answer.py?hl=en&answer=156449

User-agent: *
Disallow: /hybrid/
Disallow: /humans.txt
Disallow: /api
Disallow: /zoeken
Disallow: /regio

Sitemap: https://nos.nl/sitemap/index.xml
Sitemap: https://nos.nl/sitemap/news.xml
Sitemap: https://nos.nl/sitemap/livestreams.xml

User-agent: CCBot
Disallow: /

User-agent: ChatGPT-User
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: Google-Extended
Disallow: /

User-agent: Google-CloudVertexBot
Disallow: /

User-agent: Applebot-Extended
Disallow: /

User-agent: anthropic-ai
Disallow: /

User-agent: ClaudeBot
Disallow: /

User-agent: Omgilibot
Disallow: /

User-agent: Omgili
Disallow: /

User-agent: FacebookBot
Disallow: /

User-agent: Diffbot
Disallow: /

User-agent: DuckAssistBot
Disallow: /

User-agent: AI2Bot
Disallow: /

User-agent: Bytespider
Disallow: /

User-agent: Kangaroo Bot
Disallow: /

User-agent: ImagesiftBot
Disallow: /

User-agent: PerplexityBot
Disallow: /

User-agent: cohere-ai
Disallow: /

User-agent: Meta-ExternalAgent
Disallow: /

User-agent: Meta-ExternalFetcher
Disallow: /

User-agent: Timpibot
Disallow: /

User-agent: Webzio-Extended
Disallow: /

User-agent: YouBot
Disallow: /

User-agent: DeepSeek
Disallow: /
sitemap.xml 200 OK
Type URL Set URLs 53 entries Valid XML Yes
Sample URLs:
A+
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
PASS
www/non-www, trailing slash, HTTP→HTTPS
Info::
www/non-www redirect configured correctly (preferred: non-www)
Info::
HTTP correctly 301-redirects to HTTPS

www / non-www

301https://www.nos.nl/
200https://nos.nl/

Preferred variant: non-www

HTTP → HTTPS

301http://nos.nl/ → https://nos.nl/

Consistent

A+
Domain Intelligence
nos.nl — via NPO, 31 years, 4 months old
PASS
nos.nl — via NPO, 31 years, 4 months old
Info::
DNSSEC is enabled
Info::
Registrar: NPO
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.
Domain expiry

Unknown

SSL certificate

53 days

Issued by Sectigo Limited

Domain age

31 years, 4 months

Registered May 17, 1995

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2600:9000:2032:800:f:425b:9b80:93a1

Registrar

NPO

Unlocked 4 NS records
Expiry timeline
Today
+1 year
SSL expiry Danger zone (≤30 days)
Recommended actions
  • Enable registrar lock (clientTransferProhibited) to block unauthorized domain transfers
Registrar NPO
Created May 17, 1995 (31 years, 4 months ago)
Last Updated December 29, 2025
Name Servers ns-311.awsdns-38.com, ns-823.awsdns-38.net, ns-1511.awsdns-60.org, ns-1582.awsdns-05.co.uk
DNSSEC Enabled
Registrant Nederlandse Omroep Stichting
Hosting
IP Address 2600:9000:2032:800:f:425b:9b80:93a1
Data source: rdap (0.4s)

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 29 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
PASS
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
14 ms
TCP Connect TCP Connect — time to establish a TCP connection to the server.
2 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.
26 ms
Total Time Total request time from DNS lookup through full response.
30 ms

Connection waterfall

DNS Lookup 14 ms TCP Connect 2 ms TLS Handshake 5 ms Server Processing 5 ms Content Transfer 4 ms
A+
CDN & Delivery
AWS CloudFront (Hit from cloudfront)
PASS
AWS CloudFront (Hit from cloudfront)
Info::
Site is served via AWS CloudFront CDN (edge: JFK50-P13)
Got: x-amz-cf-id: fgwIAVA3Ged70vRBGnPsx_OVHIPEjH4O9UvZRyvaz6sMTw_Z5FQVgg==
Info::
CDN cache status: Hit from cloudfront
CDN Detected: AWS CloudFront
Provider AWS CloudFront Cache Status Hit from cloudfront Evidence x-amz-cf-id: fgwIAVA3Ged70vRBGnPsx_OVHIPEjH4O9UvZRyvaz6sMTw_Z5FQVgg==
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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