https://cbs.nl
Infrastructure
· 9 checks — DNS, redirects, IPv6, crawlability, URL variants, and domain intelligence rolled into one auditable list.SCORE
92
GRADE
A
FIX
1
REVIEW
2
PASS
6
INFO
0
Probed from Madrid, Spain
301 Moved Permanently
Checks
96 PASS 2 REVIEW 1 FIX
DCDN & DeliveryActionNo CDN detectedFIX
CDN & Delivery
ActionNo CDN detected
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.
BURL Variantswww/non-www, trailing slash, HTTP→HTTPSREVIEW
URL Variants
www/non-www, trailing slash, HTTP→HTTPS
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.cbs.nl/
200https://cbs.nl/
Inconsistent — duplicate content risk
HTTP → HTTPS
301http://cbs.nl/ → https://www.cbs.nl/
Consistent
BTLS Certificate Expiry & Recommendations235 days until leaf cert expires — 2 issues to addressREVIEW
TLS Certificate Expiry & Recommendations
235 days until leaf cert expires — 2 issues to address
Certificate validity
235
days left
0d 30d 60d 90d+
Recommended actions
- Enable HSTS: Strict-Transport-Security: max-age=31536000; includeSubDomains
- Enable OCSP stapling on your TLS server to remove a CA roundtrip and protect user privacy
A+DNS Records1 A records, 73 ms lookupPASS
DNS Records
1 A records, 73 ms lookup
1 A records, 73 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 132.164.123.249
Info::
Single A record — no DNS redundancy
Multiple A records provide failover if one server goes down.
Info::
Has 1 IPv6 (AAAA) record(s)
Got: 2603:1020:203:14::2c9
Info::
3 nameserver(s) configured
Got: dnsa3.cbs.nl, dnsa4.cbs.nl, cbs01.dns.internl.net
Info::
2 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: 73 ms
Got: 73 ms
| A | 132.164.123.249 |
| AAAA | 2603:1020:203:14::2c9 |
| CNAME | — |
| NS | dnsa3.cbs.nl, dnsa4.cbs.nl, cbs01.dns.internl.net |
| MX | 10 mailrelayh3.cbs.nl 10 mailrelayh4.cbs.nl |
| TXT | SPF v=spf1 mx ip4:51.105.176.79 ip4:50.85.155.139 ip4:87.213.43.205 include:spf.afas... |
| CAA | Lookup not available with standard resolver |
Resolved in 73 ms
Multiple A records provide failover if one server goes down.
Why this matters
Single A record means a single point of failure — if that IP goes down, your site is unreachable until DNS TTL expires.
Learn more ▾ ▴
Add multiple A records for round-robin failover, or use a managed DNS provider with health-checked failover (Route 53, Cloudflare, NS1). Short TTL (60-300s) lets clients recover faster on outages.
Source: SRE practice / DNS architecture
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.
ARedirect Chain1 redirect(s), 420 ms totalPASS
Redirect Chain
1 redirect(s), 420 ms total
1 redirect(s), 420 ms total
Info::
Single redirect
Got: https://cbs.nl → https://www.cbs.nl/ (301)
Info::
WWW normalization redirect
https://cbs.nl
88 ms · HTTP/1.1
301
https://www.cbs.nl/
332 ms · HTTP/1.1 FINAL
| # | URL | Status | Time | Protocol | Server |
|---|---|---|---|---|---|
| 1 | https://cbs.nl | 301 | 88 ms | HTTP/1.1 | Microsoft-Azure-Application-Gateway/v2 |
| 2 | https://www.cbs.nl/ | 200 | 332 ms | HTTP/1.1 | "" |
See the visual redirect chain in the HTTP Probe tab →
A+IPv6 ReadinessIPv6 reachable (29 ms)PASS
IPv6 Readiness
IPv6 reachable (29 ms)
IPv6 reachable (29 ms)
Info::
IPv6 is configured and reachable at 2603:1020:203:14::2c9
Got: 29 ms connect
IPv6 Ready
AAAA Records 2603:1020:203:14::2c9 Connection Reachable (29 ms)
A+Crawlabilityrobots.txt present, sitemap with 8 URLsPASS
Crawlability
robots.txt present, sitemap with 8 URLs
robots.txt present, sitemap with 8 URLs
Info::
robots.txt is present
Got: 10240 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 8 entries
Info::
Sitemap index with 8 child sitemaps
Info::
robots.txt does not reference a sitemap
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
Add a 'Sitemap:' directive to robots.txt so search engines can discover your sitemap.
Why this matters
robots.txt omits Sitemap: directive — crawlers must fetch /sitemap.xml by convention; reliable but missing the explicit hint.
Source: sitemaps.org
robots.txt 200 OK
Size 10240 B Sitemaps referenced 0 User-agents * Blocking No — crawling allowed
User-agent: *
Crawl-delay: 1
Disallow: /en-gb/errors/500-error
Disallow: /nl-nl/errors/500-error
Disallow: /en-gb/errors/this-content-is--currently---only-available-in-dutch
Disallow: /nl-nl/errors/vertaling-niet-beschikbaar
Disallow: /en-gb/errors/sorry-we-cannot-find-the-page-you-are-looking-for
Disallow: /nl-nl/errors/we-kunnen-de-pagina-die-je-zoekt-niet-vinden
Disallow: /nl-nl/externe-alias/ontdek-statline
Disallow: /nl-nl/onze-diensten/leren-met-het-cbs/evaluatie-samenwerking-vu-cbs/bedankt
Disallow: /en-gb/our-services/customised-services-microdata/microdata-conducting-your-own-research/evaluation-microdata-services/thank-you
Disallow: /nl-nl/onze-diensten/maatwerk-en-microdata/microdata-zelf-onderzoek-doen/evaluatie-microdataservices/dank-voor-uw-medewerking
Disallow: /en-gb/dossier/regional-statistics/statistieken-over-grensregios/samenwerking/the-cross-border-data-collection-project
Disallow: /en-gb/participants-survey/businesses/form-pages/your-request-has-been-sent-
Disallow: /nl-nl/deelnemers-enquetes/bedrijven/formulier-paginas/uw-verzoek-is-verstuurd-
Disallow: /en-gb/participants-survey/businesses/form-pages/your-request-has-successfully-been-sent-
Disallow: /nl-nl/deelnemers-enquetes/bedrijven/formulier-paginas/bedankt-voor-het-insturen
Disallow: /nl-nl/deelnemers-enquetes/personen/formulier-pagina/bedankt-voor-het-invullen
Disallow: /en-gb/participants-survey/people/formulier-paginas/your-request-has-been-sent-
Disallow: /nl-nl/statline/dataportaal/faq/wat-zijn-de-belangrijkste-verschillen-tussen-odata3-en-odata4-
Disallow: /en-gb/statline/dataportaal/faq/why-do-i-get-a-warning-that-the-browser-may-not-be-able-to-handle-the-csv-download-
Disallow: /nl-nl/statline/dataportaal/faq/waarom-krijg-ik-een-waarschuwing-dat-de-browser-de-csv-download-misschien-niet-kan-verwerken-
Disallow: /en-gb/statline/dataportaal/faq/how-can-i-find-datasets-in-the-data-portal-
Disallow: /nl-nl/statline/dataportaal/faq/hoe-kan-ik-datasets-vinden-in-het-dataportaal-
Disallow: /nl-nl/statline/dataportaal/faq/waarom-krijg-ik-een-oud-csv-bestand-als-download-terwijl-er-een-nieuwe-versie-beschikbaar-is-
Disallow: /en-gb/statline/dataportaal/general/dataportaal
Disallow: /nl-nl/statline/dataportaal/general/general-settings
Disallow: /en-gb/statline/dataportaal/general/dataportaal/portalmobiletitle
Disallow: /en-gb/statline/dataportaal/general/dataportaal/korteuitleg
Disallow: /nl-nl/statline/dataportaal/general/general-settings/portalmobiletitle
Disallow: /nl-nl/statline/dataportaal/general/general-settings/korteuitleg
Disallow: /en-gb/statline/dataportaal/general/dataportaal/reagerenurl
Disallow: /en-gb/statline/dataportaal/general/dataportaal/cbsapiurl
Disallow: /nl-nl/statline/dataportaal/general/general-settings/reagerenurl
Disallow: /nl-nl/statline/dataportaal/general/general-settings/cbsapiurl
Disallow: /en-gb/statline/dataportaal/general/dataportaal/appmobiletitle
Disallow: /en-gb/statline/dataportaal/general/dataportaal/dataportaal_url
Disallow: /nl-nl/statline/dataportaal/general/general-settings/appmobiletitle
Disallow: /nl-nl/statline/dataportaal/general/general-settings/dataportaal_url
Disallow: /nl-nl/statline/dataportaal/general/general-settings/appadditionaltitle
Disallow: /en-gb/statline/dataportaal/general/dataportaal/payoff
Disallow: /nl-nl/statline/dataportaal/general/general-settings/payoff
Disallow: /en-gb/statline/dataportaal/general/dataportaal/mainsite_text
Disallow: /nl-nl/statline/dataportaal/general/general-settings/mainsite_text
Disallow: /en-gb/statline/dataportaal/general/dataportaal/helpurl
Disallow: /nl-nl/statline/dataportaal/general/general-settings/helpurl
Disallow: /en-gb/statline/dataportaal/general/dataportaal/copyright
Disallow: /nl-nl/statline/dataportaal/general/general-settings/copyright
Disallow: /en-gb/statline/dataportaal/general/dataportaal/backgroundappurl
Disallow: /nl-nl/statline/dataportaal/general/general-settings/backgroundappurl
Disallow: /en-gb/statline/dataportaal/general/dataportaal/recenturl
Disallow: /nl-nl/statline/dataportaal/general/general-settings/recenturl
Disallow: /en-gb/statline/dataportaal/general/dataportaal/dataportaal
Disallow: /nl-nl/statline/dataportaal/general/general-settings/dataportaal
Disallow: /en-gb/statline/dataportaal/general/dataportaal/portaltitle
Disallow: /nl-nl/statline/dataportaal/general/general-settings/portaltitle
Disallow: /en-gb/statline/dataportaal/general/dataportaal/apptitle
Disallow: /nl-nl/statline/dataportaal/general/general-settings/apptitle
Disallow: /en-gb/statline/dataportaal/general/dataportaal/mainsite_url
Disallow: /en-gb/statline/dataportaal/general/dataportaal/mainsite
Disallow: /nl-nl/statline/dataportaal/general/general-settings/mainsite_url
Disallow: /nl-nl/statline/dataportaal/general/general-settings/mainsite
Disallow: /en-gb/statline/dataportaal/general/dataportaal/dataportaal_text
Disallow: /nl-nl/statline/dataportaal/general/general-settings/dataportaal_text
Disallow: /en-gb/statline/dataportaal/informatie/general-information-on-the-use-of-cbs-open-data
Disallow: /en-gb/statline/dataportaal/informatie/information-for-developers
Disallow: /nl-nl/statline/dataportaal/informatie/algemene-informatie-voor-gebruik-van-cbs-open-data
Disallow: /nl-nl/statline/dataportaal/informatie/informatie-voor-ontwikkelaars
Disallow: /en-gb/statline/dataportaal/informatie/information-for-data-analysts
Disallow: /nl-nl/statline/dataportaal/informatie/informatie-voor-data-analisten
Disallow: /nl-nl/statline/azw/general/general-settings
Disallow: /nl-nl/statline/azw/homepage/contact
Disallow: /nl-nl/statline/azw/homepage/definities
Disallow: /nl-nl/statline/azw/homepage/dashboard
Disallow: /nl-nl/statline/azw/homepage/open-data
Disallow: /nl-nl/statline/azw/homepage/aanvullend-statistisch-onderzoek
Disallow: /nl-nl/statline/azw/homepage/azw-statline
Disallow: /nl-nl/statline/azw/homepage/azw
Disallow: /nl-nl/statline/azw/general/general-settings/portalmobiletitle
Disallow: /nl-nl/statline/azw/general/general-settings/mainsite_url
Disallow: /nl-nl/statline/azw/general/general-settings/helpurl
Disallow: /nl-nl/statline/azw/general/general-settings/copyright
Disallow: /nl-nl/statline/azw/general/general-settings/cbsapiurl
Disallow: /nl-nl/statline/azw/general/general-settings/dataportaal_url
Disallow: /nl-nl/statline/azw/general/general-settings/korteuitleg
Disallow: /nl-nl/statline/azw/general/general-settings/backgroundappurl
Disallow: /nl-nl/statline/azw/general/general-settings/appmobiletitle
Disallow: /nl-nl/statline/azw/general/general-settings/appadditionaltitle
Disallow: /nl-nl/statline/azw/general/general-settings/recenturl
Disallow: /nl-nl/statline/azw/general/general-settings/mainsite_text
Disallow: /nl-nl/statline/azw/general/general-settings/mainsite
Disallow: /nl-nl/statline/azw/general/general-settings/dataportaal_text
Disallow: /en-gb/statline/azw/general/azw/dataportaal
Disallow: /nl-nl/statline/azw/general/general-settings/dataportaal
Disallow: /nl-nl/statline/azw/general/general-settings/portaltitle
Disallow: /nl-nl/statline/azw/general/general-settings/payoff
Disallow: /nl-nl/statline/azw/general/general-settings/reagerenurl
Disallow: /nl-nl/statline/azw/general/general-settings/apptitle
Disallow: /en-gb/statline/sxstat/homepage/statistics-st-maarten
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics
Disallow: /nl-nl/statline/sxstat/homepage/algemeen
Disallow: /nl-nl/statline/sxstat/general/general-settings
Disallow: /en-gb/statline/sxstat/homepage/keyword-search
Disallow: /nl-nl/statline/sxstat/homepage/keyword-search
Disallow: /en-gb/statline/sxstat/homepage/open-data
Disallow: /en-gb/statline/sxstat/homepage/st-maarten-in-figures
Disallow: /nl-nl/statline/sxstat/homepage/open-data
Disallow: /nl-nl/statline/sxstat/homepage/st-maarten-in-figures
Disallow: /en-gb/statline/sxstat/homepage/explanation
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/achtergrond-voor-dataportal
Disallow: /nl-nl/statline/sxstat/homepage/explanation
Disallow: /nl-nl/statline/sxstat/general/general-settings/backgroundappurl
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/appadditionaltitle
Disallow: /nl-nl/statline/sxstat/general/general-settings/cbsapiurl
Disallow: /nl-nl/statline/sxstat/general/general-settings/appadditionaltitle
Disallow: /nl-nl/statline/sxstat/general/general-settings/portalmobiletitle
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/payoff
Disallow: /nl-nl/statline/sxstat/general/general-settings/reagerenurl
Disallow: /nl-nl/statline/sxstat/general/general-settings/payoff
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/appmobiletitle
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/korteuitleg
Disallow: /nl-nl/statline/sxstat/general/general-settings/appmobiletitle
Disallow: /nl-nl/statline/sxstat/general/general-settings/korteuitleg
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/mainsite_url
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/dataportaal_text
Disallow: /nl-nl/statline/sxstat/general/general-settings/mainsite_url
Disallow: /nl-nl/statline/sxstat/general/general-settings/dataportaal_text
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/helpurl
Disallow: /nl-nl/statline/sxstat/general/general-settings/helpurl
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/apptitle
Disallow: /nl-nl/statline/sxstat/general/general-settings/apptitle
Disallow: /nl-nl/statline/sxstat/general/general-settings/portaltitle
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/dataportaal_url
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/mainsite_text
Disallow: /nl-nl/statline/sxstat/general/general-settings/dataportaal_url
Disallow: /nl-nl/statline/sxstat/general/general-settings/mainsite_text
Disallow: /en-gb/statline/sxstat/general/sint-maarten-statistics/copyright
Disallow: /nl-nl/statline/sxstat/general/general-settings/copyright
Disallow: /nl-nl/statline/mlz/general/general-settings
Disallow: /nl-nl/statline/mlz/homepage/grafieken
sitemap.xml 200 OK
Type Sitemap Index URLs 8 entries Valid XML Yes
Child Sitemaps:
- https://www.cbs.nl/nl-nl/sitemaps/sitema...
- https://www.cbs.nl/en-gb/sitemaps/sitema...
- https://www.cbs.nl/nl-nl/sitemaps/newssi...
- https://www.cbs.nl/en-gb/sitemaps/newssi...
- https://www.cbs.nl/nl-nl/sitemaps/videos...
- https://www.cbs.nl/en-gb/sitemaps/videos...
- https://www.cbs.nl/nl-nl/sitemaps/tables...
- https://www.cbs.nl/en-gb/sitemaps/tables...
A+Domain Intelligencecbs.nl — via Registrar.eu, 35 years oldPASS
Domain Intelligence
cbs.nl — via Registrar.eu, 35 years old
cbs.nl — via Registrar.eu, 35 years old
Info::
DNSSEC is enabled
Info::
Registrar: Registrar.eu
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
235 days
Issued by DigiCert Ireland Limited
Domain age
35 years
Registered October 20, 1991
DNSSEC
Enabled
Protects against DNS spoofing
Hosting
Unknown
2603:1020:203:14::2c9
Registrar
Registrar.eu
Unlocked 3 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 Registrar.eu
Created October 20, 1991 (35 years ago)
Last Updated February 18, 2026
Name Servers cbs01.dns.internl.net, dnsa4.cbs.nl, dnsa3.cbs.nl
DNSSEC Enabled
Registrant Centraal Bureau voor de Statistiek
Hosting
IP Address 2603:1020:203:14::2c9
Data source: rdap (0.3s)
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 TimingTotal 172 ms — DNS, TCP, TLS, TTFB, content transfer breakdownPASS
HTTP Probe Timing
Total 172 ms — DNS, TCP, TLS, TTFB, content transfer breakdown
DNS Lookup DNS Lookup — time to resolve the domain name to an IP address.
84 msTCP Connect TCP Connect — time to establish a TCP connection to the server.
29 msTLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
31 msTime to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
172 msTotal Time Total request time from DNS lookup through full response.
173 msConnection waterfall
DNS Lookup 84 ms TCP Connect 29 ms TLS Handshake 31 ms Server Processing 29 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.