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https://belastingdienst.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
9
6 PASS 2 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
2 redirect(s), 432 ms total
REVIEW
2 redirect(s), 432 ms total
Warning::
2 redirects before reaching final URL
Each redirect adds latency. Try to minimize the chain to 1 hop.
Info::
WWW normalization redirect
Info::
Uses 302 (temporary) redirect
If permanent, use 301 instead.
Got: https://www.belastingdienst.nl/

https://belastingdienst.nl

112 ms · HTTP/1.1

301

https://www.belastingdienst.nl/

204 ms · HTTP/1.1

302

https://www.belastingdienst.nl/wps/wcm/c...

116 ms · HTTP/1.1 FINAL

#URLStatusTimeProtocolServer
1https://belastingdienst.nl301112 msHTTP/1.1
2https://www.belastingdienst.nl/302204 msHTTP/1.1
3https://www.belastingdienst.nl/wps/wcm/c...200116 msHTTP/1.1

See the visual redirect chain in the HTTP Probe tab →

Each redirect adds latency. Try to minimize the chain to 1 hop.

Why this matters

Redirect chain — each hop adds latency; combine into one redirect where possible.

Source: Google Search Central / web.dev

If permanent, use 301 instead.

Why this matters

302 (Found) is for genuinely temporary redirects — if this redirect is permanent, switch to 301 to preserve SEO equity.

Learn more ▾

Search engines treat 302 as temporary, keeping the original URL indexed and not transferring full link equity to the destination. Use 301 (Moved Permanently) for permanent redirects (HTTP→HTTPS, www-vs-non-www, URL restructures).

Source: Google Search Central

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

Certificate validity

192
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
1 A records, 88 ms lookup
PASS
1 A records, 88 ms lookup
Info::
Resolves to 1 IPv4 address(es)
Got: 85.159.98.33
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: 2a04:9a01:1002::33
Info::
3 nameserver(s) configured
Got: ns3.belastingdienst.nl, ns2.belastingdienst.nl, ns4.belastingdienst.nl
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: 88 ms
Got: 88 ms
A85.159.98.33
AAAA2a04:9a01:1002::33
CNAME—
NSns3.belastingdienst.nl, ns2.belastingdienst.nl, ns4.belastingdienst.nl
MX
10 smtp1.belastingdienst.nl
10 smtp2.belastingdienst.nl
TXT
cisco-ci-domain-verification=32c17c9089f6210e35edd34c4b60f77f6bad058e5a041e9b62b...
cisco-ci-domain-verification=5948faadf4061ae36f76b3fe407dcdace5e2547385740c47509...
vmware-cloud-verification-c3241408-be34-4f92-9768-bb18a0e78da7
SPF v=spf1 redirect=_spf.belastingdienst.nl
MS=A9C86F2CB33B3D3C6E50CE3D5C0CC6A3B512F73A
google-site-verification=QBJ7BwG_IClL1H3fXMoRbvBKsa-SJJ7_j6smVlajQ5w
cisco-ci-domain-verification=25e78e72edecec7b6a8eac8a6b91ce8909b66011de4f9592785...
MS=ms50095169
figma-domain-verification=0d3aff64020f06b80d89150f70daf07878d4b84cc635543fd55a65...
adobe-idp-site-verification=9faf733826dee2c77dc30871f1730cbcda04887d0667a5457219...
8F57-F46B-A3E9-D206-8B9C-CEAE-0802-4F93
CAALookup not available with standard resolver
Resolved in 88 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.

A+
IPv6 Readiness
IPv6 reachable (34 ms)
PASS
IPv6 reachable (34 ms)
Info::
IPv6 is configured and reachable at 2a04:9a01:1002::33
Got: 34 ms connect
IPv6 Ready
AAAA Records 2a04:9a01:1002::33 Connection Reachable (34 ms)
A+
Crawlability
robots.txt present, sitemap with 1196 URLs
PASS
robots.txt present, sitemap with 1196 URLs
Info::
robots.txt is present
Got: 3037 bytes
Info::
sitemap.xml is present
Info::
sitemap.xml is valid XML
Info::
sitemap.xml contains 1196 entries
Info::
robots.txt references sitemap
robots.txt 200 OK
Size 3037 B Sitemaps referenced 2 User-agents * Blocking No — crawling allowed
User-agent: *
Disallow: /config/
Disallow: /data/
Disallow: /monitor/
Disallow: /wps/wcm/connect/bldsysteem/belastingdienst/foutmeldingen/
Disallow: /wps/wcm/connect/bldontwerp/
Disallow: /wps/wcm/connect/bldcontentnl/niet_in_enig_menu/toeslagen/
Disallow: /wps/wcm/connect/bldcontentnl/niet_in_enig_menu/redirects/
Disallow: /wps/wcm/connect/bldcontentnl/niet_in_enig_menu/proevenonlinedienstverlening/
Disallow: /wps/wcm/connect/bldcontentnl/niet_in_enig_menu/inloggen_op/
Disallow: /wps/wcm/connect/bldcontentnl/niet_in_enig_menu/bijzondere_situaties/
Disallow: /wps/wcm/connect/bldcontentnl/berichten/nieuws/rss/nieuwsfeed_actueel_douane.xml
Disallow: /wps/wcm/connect/bldcontentnl/berichten/nieuws/rss/nieuwsfeed_actueel_intermediairs.xml
Disallow: /wps/wcm/connect/bldcontentnl/berichten/nieuws/rss/nieuwsfeed_actueel_particulier.xml
Disallow: /wps/wcm/connect/bldcontentnl/berichten/nieuws/rss/nieuwsfeed_actueel_zakelijk.xml
Disallow: /wps/wcm/connect/bldcontentnl/berichten/berichten.json
Disallow: /wps/wcm/connect/bldcontentde/themaoverstijgend/nachrichten/rss/newsfeed_privatpersonen.xml
Disallow: /wps/wcm/connect/bldcontentde/themaoverstijgend/nachrichten/rss/newsfeed_unternehmen.xml
Disallow: /wps/wcm/connect/bldcontenten/themaoverstijgend/news/rss/newsfeed_individuals.xml
Disallow: /wps/wcm/connect/bldcontenten/themaoverstijgend/news/rss/newsfeed_business.xml
Disallow: /wps/wcm/connect/bldcontenten/themaoverstijgend/news/rss/newsfeed_customs.xml
Disallow: /wps/wcm/connect/bldcontentde/themaoverstijgend/programme_und_formulare/f_42.html
Disallow: /wps/wcm/connect/bldcontentde/themaoverstijgend/programme_und_formulare/g_42.html
Disallow: /wps/wcm/connect/bldcontentde/themaoverstijgend/programme_und_formulare/g_52.html
Disallow: /wps/wcm/connect/bldcontenten/themaoverstijgend/applications_and_forms/f_41.html
Disallow: /wps/wcm/connect/bldcontenten/themaoverstijgend/applications_and_forms/g_41.html
Disallow: /wps/wcm/connect/bldcontenten/themaoverstijgend/applications_and_forms/g_51.html
Disallow: /wps/wcm/connect/bldcontentnl/themaoverstijgend/programmas_en_formulieren/f_40.html
Disallow: /wps/wcm/connect/bldcontentnl/themaoverstijgend/programmas_en_formulieren/g_40.html
Disallow: /wps/wcm/connect/bldcontentnl/themaoverstijgend/programmas_en_formulieren/g_50.html
Disallow: /wps/wcm/connect/bldontwerp/bld/npg-next/video_data.json
Disallow: /wps/wcm/connect/bldontwerp/bld/npg-next-v1/video_data.json
Disallow: /wps/wcm/connect/bldcontentnl/berichten/berichten_uitgebreid.json
Disallow: /wps/wcm/connect/nl/ab/
Disallow: /wps/wcm/connect/nl/instagram/
Disallow: /wps/wcm/connect/nl/layouts/menu
Disallow: /wps/wcm/connect/en/layouts/menu
Disallow: /wps/wcm/connect/de/layouts/menu
Disallow: /wps/wcm/connect/nl/test_compleet
Disallow: /bibliotheek/handboeken/html/boeken/HD/
Disallow: /common/maa/
Disallow: /common/mkt/
Sitemap: https://www.belastingdienst.nl/wps/wcm/connect/bldsysteem/seo-dv/sitemap-dv.xml
Sitemap: https://www.belastingdienst.nl/wps/wcm/connect/bldsysteem/seo-bieb/sitemap-bieb.xml
sitemap.xml 200 OK
Type URL Set URLs 1196 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)
Warning::
HTTP→HTTPS redirect uses 302 instead of 301
Got: 302 temporary redirect Expected: 301 permanent redirect

www / non-www

302https://www.belastingdienst.nl/
200https://belastingdienst.nl/

Preferred variant: non-www

HTTP → HTTPS

302http://belastingdienst.nl/ → https://belastingdienst.nl/

Use 301 (permanent) instead of 302 (temporary)

A+
Domain Intelligence
belastingdienst.nl — via Belastingdienst, 30 years, 10 months old
PASS
belastingdienst.nl — via Belastingdienst, 30 years, 10 months old
Info::
DNSSEC is enabled
Info::
Registrar: Belastingdienst
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

192 days

Issued by DigiCert Ireland Limited

Domain age

30 years, 10 months

Registered November 2, 1995

DNSSEC

Enabled

Protects against DNS spoofing

Hosting

Unknown

2a04:9a01:1002::33

Registrar

Belastingdienst

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 Belastingdienst
Created November 2, 1995 (30 years, 10 months ago)
Last Updated October 11, 2025
Name Servers ns2.belastingdienst.nl, ns3.belastingdienst.nl, ns4.belastingdienst.nl
DNSSEC Enabled
Registrant Belastingdienst/Centrum voor Infrastructuur en Exploitatie
Hosting
IP Address 2a04:9a01:1002::33
Data source: rdap (0.2s)

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 141 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.
33 ms
TLS Handshake TLS Handshake — time to complete the HTTPS encryption handshake.
42 ms
Time to First Byte Time to First Byte — how long the server takes to respond with the first byte of data.
142 ms
Total Time Total request time from DNS lookup through full response.
142 ms

Connection waterfall

DNS Lookup 30 ms TCP Connect 33 ms TLS Handshake 42 ms Server Processing 36 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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