Domain report: theaterencyclopedie.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

warn

ns1.uha.nl, ns2.uha.nl

Found

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

Nameserver	Addresses	Network (AS)	Glue
ns1.uha.nl	145.18.128.7 2001:610:159:3128::7	AS1124 UVA-NL - IDDQD-AS, EU AS1103 SURFNET-NL - SURF B.V., NL	145.18.128.7 2001:610:159:3128::7
ns2.uha.nl	145.18.128.8 2001:610:159:3128::8	AS1124 UVA-NL - IDDQD-AS, EU AS1103 SURFNET-NL - SURF B.V., NL	145.18.128.8 2001:610:159:3128::8

Checks

i

2 nameservers

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

#6
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ No glue needed #8

All nameservers are outside the zone, so no glue records are needed.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
!

Nameservers in one network

all IPv4 addresses are in 145.18.128.0/24; all IPv6 addresses are in 2001:610:159::/48. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).

#10
✓ 2 autonomous systems #11

The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 2 addresses; AS1124 (UVA-NL - IDDQD-AS, EU): 2 addresses.
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
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.uha.nl 145.18.128.7	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns1.uha.nl 2001:610:159:3128::7	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns2.uha.nl 145.18.128.8	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns2.uha.nl 2001:610:159:3128::8	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 4 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.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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

info

serial 7919 · primary gm.net.uha.nl

Found

Primary (MNAME): gm.net.uha.nl
Contact (RNAME): hostmaster.uva.nl
Serial: 7919
Refresh / retry: 3600 s / 360 s
Expire: 604800 s
Negative TTL: 900 s

Serial per nameserver

Nameserver	Serial
ns1.uha.nl (145.18.128.7)	7919
ns1.uha.nl (2001:610:159:3128::7)	7919
ns2.uha.nl (145.18.128.8)	7919
ns2.uha.nl (2001:610:159:3128::8)	7919

Checks

✓ Serial 7919 everywhere #22

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

SOA refresh 1h, retry 6m, expire 7d, negative TTL 15m.
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Hidden master

The primary nameserver gm.net.uha.nl is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.

#24
✓ Contact hostmaster@uva.nl #25

The SOA RNAME hostmaster.uva.nl means hostmaster@uva.nl.
✓ Counter serial #26

The serial 7919 is a plain counter.

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 10 iterations, 6-byte salt
Signatures valid until: 26 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
39247	RSASHA256 (8)	SHA256 90AA880A666F8EEA…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
55030	ZSK (256)	RSASHA256 (8)
20236	ZSK (256)	RSASHA256 (8)
39247	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 39247 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Short-lived signatures (online signing) #30

Signatures are valid for 96h0m0s and created on demand; the current one was made at 2026-10-22 14:37 UTC and expires at 2026-10-26 15:05 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 10 iterations and a 6-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

info

11 records at the apex

Found

Read from: 145.18.128.7:53

Type	Value	TTL
SOA	gm.net.uha.nl. hostmaster.uva.nl. 7919 3600 360 604800 900	3600
NS	ns1.uha.nl.	3600
NS	ns2.uha.nl.	3600
A	2.28.199.251	3600
AAAA	2a01:4f8:1c1a:a32d::1	3600
MX	10 theaterencyclopedie.nl.	3600
TXT	"amazonses:q1mwDxIkO6CP5YefwZ3TI4PcthH6f0N9chvPkjgS8UA="	3600
TXT	"v=spf1 include:amazonses.com ~all"	3600
TXT	"HARICA-gNqGXmAseUeH4aCaBs9"	3600
TXT	"HARICA-RtmM9u41v7kDejeSFSA"	3600
TXT	"HARICA-DAWfzKeB5MqUb3V2CBn"	3600

Checks

✓ TTLs within range #32

TTLs: A 1h, AAAA 1h, 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.
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No CAA records

Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.

#35