Domain report: pijnacker-nootdorp.nl

Registration

info

.nl country-code

Found

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

Lookup error: https://rdap.sidn.nl/domain/pijnacker-nootdorp.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/pijnacker-nootdorp.nl returned HTTP 429

#3

Delegation

info

ns1.kpn.net, ns11.kpn.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.kpn.net, ns11.kpn.net
NS in the zone: ns1.kpn.net, ns11.kpn.net

Nameserver	Addresses	Network (AS)	Glue
ns1.kpn.net	194.151.228.10 2a02:a47f:ac:1::153	AS1136 KPN - KPN B.V., NL AS1136 KPN - KPN B.V., NL	-
ns11.kpn.net	213.75.63.33 2a02:a47f:ac:1::1153	AS1136 KPN - KPN B.V., NL AS1136 KPN - KPN B.V., NL	-

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.kpn.net, ns11.kpn.net.

#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.
i

One address family in one network

all IPv6 addresses are in 2a02:a47f:ac::/48, while the other address family is spread over several networks.

#10
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS1136 (KPN - KPN B.V., NL): 4 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 .net

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.kpn.net 194.151.228.10	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns1.kpn.net 2a02:a47f:ac:1::153	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns11.kpn.net 213.75.63.33	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns11.kpn.net 2a02:a47f:ac:1::1153	NOERROR, 11 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

pass

serial 2026102201 · primary ns1.kpn.net

Found

Primary (MNAME): ns1.kpn.net
Contact (RNAME): zonemaster.kpn.com
Serial: 2026102201
Refresh / retry: 10800 s / 3600 s
Expire: 604800 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.kpn.net (194.151.228.10)	2026102201
ns1.kpn.net (2a02:a47f:ac:1::153)	2026102201
ns11.kpn.net (213.75.63.33)	2026102201
ns11.kpn.net (2a02:a47f:ac:1::1153)	2026102201

Checks

✓ Serial 2026102201 everywhere #22

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

SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver ns1.kpn.net is one of the listed nameservers.
✓ Contact zonemaster@kpn.com #25

The SOA RNAME zonemaster.kpn.com means zonemaster@kpn.com.
✓ Date-based serial #26

The serial 2026102201 follows the YYYYMMDDnn convention (2026-10-22).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 5 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
36508	ECDSAP256SHA256 (13)	SHA256 8156C182F2D5C9D5…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
36508	KSK (257)	ECDSAP256SHA256 (13)
34708	ZSK (256)	ECDSAP256SHA256 (13)

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 36508 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Signatures valid until 2026-11-05 #30

The earliest DNSKEY/SOA signature expires at 2026-11-05 00:00 UTC.
✓ NSEC3 as recommended #31

The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

info

25 records at the apex

Found

Read from: 194.151.228.10:53

Type	Value	TTL
SOA	ns1.kpn.net. zonemaster.kpn.com. 2026102201 10800 3600 604800 3600	3600
NS	ns11.kpn.net.	3600
NS	ns1.kpn.net.	3600
A	185.144.224.28	3600
A	31.7.6.87	3600
A	31.7.0.60	3600
AAAA	2a03:9700:8000:1::23	3600
AAAA	2a03:9700:8000:1::25	3600
AAAA	2a03:9700:8000:1::24	3600
MX	10 mail.pijnacker-nootdorp.nl.	3600
TXT	"v=spf1 include:spf.protection.outlook.com include:spf.simgroephosting.nl ip4:45.80.232.20/30 ip4:92.42.235.1/24 include:spf_servers.yard.nl include:spf.mailjet.com include:spf_cluster.yard.nl include:stspg-customer.com ip4:213.75.3.23 ip4:194.53.14.67 ip4" ":195.72.120.56 ip4:212.57.58.206/29 ip4:195.8.208.215/30 ip4:213.75.39.0/28 ip4:195.121.94.160/27 ip4:85.90.85.193 ip4:85.90.85.177 ip4:188.92.57.143 ip4:46.31.48.0/21 ip6:2a02:23e8::/32 ip4:37.221.216.0/21 ip4:176.62.195.45 ip4:31.7.1.29 ip6:2a03:9700:80" "00:1::29 ip4:89.20.173.131 -all"	3600
TXT	"ms-domain-verification=006836d6-17c9-496f-aa8a-c3082092fa22"	3600
TXT	"92d2396a0547e678bfbb2c967aa79424d172758fb9b84bc3aa3f7a574d67de49"	3600
TXT	"cdf0007f04595e75b4a7514bf00f94c47cf17ff93ed280ffc441a7e073aa3105"	3600
TXT	"523f35d698e7458a53699d5403535d4f68dfa22678a273a63ca7aba9138cac97"	3600
TXT	"35304759fbb7de662589014a0726416f656fc8cd41d56194c04110f35a925726"	3600
TXT	"MS=ms53445535"	3600
TXT	"apple-domain-verification=igldsVHvKGdfBrrP"	3600
TXT	"s8vp3l8KbDUJIl02qb63e9VeSCnFBy9qHRJR4qz1zKQeyjm7dtZdCeR/upge0/NZjPrpckxg4UCdo2eR04C2gg=="	3600
TXT	"safegpt-domain-verification=64a0dd434659cb8c4f39b487e8a88a1f514216ab4fea45e26806165efcad6b59"	3600
TXT	"XITuqUSl3l7oqfov9gIooiPrg5kWOO8OsXyj0C2yelttVnf2KhsgaQVeMerfJ1au"	3600
TXT	"v=NTA7516-1;startdate=2023-08;enddate=2033-08;provider=secumailer"	3600
TXT	"5546ccd61553396c9c0759fbc8cdbbe3cfa34122ea5c9879a3b39f655c2f9b36"	3600
TXT	"d24f22c5dd0700f86d42415c2ee26c65c327a706478b4faa303a0a66a4bc0619"	3600
TXT	"2ad03fba16c65162e3d8c69b7ea308d32117a27c6305e2520e4447292eeba0c3"	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