Domain report: politieacademie.nl

Registration

info

.nl country-code

Found

TLD: .nl (country-code)
ICANN policies apply: no

Lookup error: https://rdap.sidn.nl/domain/politieacademie.nl returned HTTP 429

Checks

i

.nl is a country-code TLD (ccTLD)

Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.

#1
✓ TLD delegated and signed #2

.nl is delegated in the root zone and DNSSEC-signed.
i

Could not be checked

The RDAP lookup failed, so this could not be checked: https://rdap.sidn.nl/domain/politieacademie.nl returned HTTP 429

#3

Delegation

info

ns1.politieacademie.nl, ns2.surfnet.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.politieacademie.nl, ns2.surfnet.nl
NS in the zone: ns1.politieacademie.nl, ns2.surfnet.nl

Nameserver	Addresses	Network (AS)	Glue
ns1.politieacademie.nl	192.87.209.10	AS1103 SURFNET-NL - SURF B.V., NL	192.87.209.10
ns2.surfnet.nl	192.87.36.2 2001:610:3:200a:192:87:36:2	AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL	192.87.36.2 2001:610:3:200a:192:87:36:2

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.politieacademie.nl, ns2.surfnet.nl.

#6
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ Glue present and correct #8

Glue is published for the nameservers inside the zone: ns1.politieacademie.nl.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
✓ Nameservers in different networks #10

The nameservers are spread over 2 IPv4 /24s and 1 IPv6 /48.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS1103 (SURFNET-NL - SURF B.V., NL): 3 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
i

All nameserver names under .nl

All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.

#12
i

Partly IPv6

These nameservers have no IPv6 address: ns1.politieacademie.nl.

#13

Nameservers

info

3 of 3 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.politieacademie.nl 192.87.209.10	NOERROR, 14 ms, authoritative	no	yes / yes	refused	-
ns2.surfnet.nl 192.87.36.2	NOERROR, 13 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.surfnet.nl 2001:610:3:200a:192:87:36:2	NOERROR, 12 ms, authoritative	no	yes / yes	refused	This is a SURFnet nameserver - dns-beheer@surfnet.nl

Checks

✓ All respond #14

All 3 nameserver addresses answered.
✓ All authoritative #15

Every responding nameserver answers authoritatively for the zone.
✓ No recursion #16

The nameservers do not answer recursive queries for other domains.
i

Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: ns2.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl".

#17
✓ Zone transfers refused #18

No nameserver allows a zone transfer to the public.
✓ TCP supported #19

All nameservers answer over TCP.
✓ EDNS supported #20

All nameservers support EDNS(0).
✓ Public addresses #21

All nameserver addresses are publicly routable.

SOA

pass

serial 2026101903 · primary ns1.politieacademie.nl

Found

Primary (MNAME): ns1.politieacademie.nl
Contact (RNAME): dnsmaster.politieacademie.nl
Serial: 2026101903
Refresh / retry: 14400 s / 1800 s
Expire: 1209600 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.politieacademie.nl (192.87.209.10)	2026101903
ns2.surfnet.nl (192.87.36.2)	2026101903
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)	2026101903

Checks

✓ Serial 2026101903 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 4h, retry 30m, expire 14d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver ns1.politieacademie.nl is one of the listed nameservers.
✓ Contact dnsmaster@politieacademie.nl #25

The SOA RNAME dnsmaster.politieacademie.nl means dnsmaster@politieacademie.nl.
✓ Date-based serial #26

The serial 2026101903 follows the YYYYMMDDnn convention (2026-10-19).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 50 iterations, 8-byte salt
Signatures valid until: 24 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
53792	RSASHA256 (8)	SHA256 EC3B701C4AA4A62F…	yes
43346	RSASHA256 (8)	SHA256 D5A4408778B5F022…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
53792	KSK (257)	RSASHA256 (8)
44850	ZSK (256)	RSASHA256 (8)
56060	KSK (257)	RSASHA256 (8)
46581	ZSK (256)	RSASHA256 (8)
43346	KSK (257)	RSASHA256 (8)

Checks

✓ Signed and validated #27

The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
✓ DS matches a key #28

The DS record at the parent matches a key in the zone: key tag 53792 (SHA256), key tag 43346 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
!

Signatures expire soon

The earliest signature expires at 2026-10-24 15:28 UTC (in 48h0m0s). Check that automatic re-signing works.

#30
!

NSEC3 with extra iterations or salt

NSEC3 uses 50 iterations and a 8-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.

#31

Records

pass

23 records at the apex

Found

Read from: 192.87.209.10:53

Type	Value	TTL
SOA	ns1.politieacademie.nl. dnsmaster.politieacademie.nl. 2026101903 14400 1800 1209600 3600	3600
NS	ns1.politieacademie.nl.	3600
NS	ns2.surfnet.nl.	3600
A	192.87.209.46	300
MX	20 mail1.politieacademie.nl.	3600
MX	10 mail2.politieacademie.nl.	3600
TXT	"QuoVadis=70bb63e0-c5d1-4bed-a7f4-1573f37606b0"	3600
TXT	"QuoVadis=7366bd30-25c3-49b6-8f83-8cbbee541efc"	3600
TXT	"actalis-dcv=81vt1vor0361uh0v08aj3dsfap"	3600
TXT	"apple-domain-verification=MpfvpdfTUXTNIVLB"	3600
TXT	"actalis-dcv=sr3j0dq6ik8rmp5i648o1k7gd9"	3600
TXT	"FFA28CD84E7067A55CA37BD202C3135BC5CB89ED36D166E1F8DE5B639E746EC9"	3600
TXT	"adobe-idp-site-verification=edee7f6a3be5b552a937fb14d2521414c2ee964002d27579c85b18bc630ef775"	3600
TXT	"8C91C1B8EF14A493DA924B528786B8B0FF8A5BED03423D85E787B5CF1B068F6C"	3600
TXT	"v=spf1 ip4:192.87.209.8 ip4:192.87.209.85 ip4:192.87.209.5 ip4:192.87.209.11 ip4:192.87.209.21 include:_spf.easycruit.com include:spf.protection.outlook.com -all"	3600
TXT	"93dba864-cb0d-45a9-9665-853e1b2dc2a6"	60
CAA	0 issue "actalis.it"	3600
CAA	0 issuewild "actalis.it"	3600
CAA	0 issue "quovadisglobal.com"	3600
CAA	0 issuewild "quovadisglobal.com"	3600
CAA	0 iodef "mailto:soc@politie.nl"	3600
CAA	0 issue "sectigo.com"	3600
CAA	0 issuewild "sectigo.com"	3600

Checks

✓ TTLs within range #32

TTLs: A 5m, MX 1h, NS 1h.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
✓ No wildcard #34

Names that don't exist return NXDOMAIN.
✓ CAA restricts issuance #35

Certificates may be issued by: actalis.it, quovadisglobal.com, sectigo.com.