Domain report: patientenfederatie.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

pass

ns1.combell.eu, ns3.combell.net, ns4.combell.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.combell.eu, ns3.combell.net, ns4.combell.net
NS in the zone: ns1.combell.eu, ns3.combell.net, ns4.combell.net

Nameserver	Addresses	Network (AS)	Glue
ns1.combell.eu	89.44.166.48 2a00:1c98:50::50	AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE	-
ns3.combell.net	83.217.73.172 2a00:1c98::53:1	AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE	-
ns4.combell.net	86.39.202.67 2001:1598:0:101::3	AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE	-

Checks

✓ 3 nameservers #6

Delegated to ns1.combell.eu, ns3.combell.net, ns4.combell.net.
✓ 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 different networks #10

The nameservers are spread over 3 IPv4 /24s and 3 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS28747 (EASYHOST-COLO-AS - Easyhost BVBA, BE): 2 addresses; AS34762 (COMBELL-AS - Combell NV, BE): 4 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .eu, .net.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

info

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.combell.eu 89.44.166.48	NOERROR, 10 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns1.combell.eu 2a00:1c98:50::50	NOERROR, 10 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns3.combell.net 83.217.73.172	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns3.combell.net 2a00:1c98::53:1	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns4.combell.net 86.39.202.67	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis
ns4.combell.net 2001:1598:0:101::3	NOERROR, 14 ms, authoritative	no	yes / yes	refused	You are on a need to know basis

Checks

✓ All respond #14

All 6 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: ns1.combell.eu: "You are on a need to know basis"; ns3.combell.net: "You are on a need to know basis"; ns4.combell.net: "You are on a need to know basis".

#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 1790581966 · primary ns3.combell.net

Found

Primary (MNAME): ns3.combell.net
Contact (RNAME): hostmaster.patientenfederatie.nl
Serial: 1790581966
Refresh / retry: 10800 s / 3600 s
Expire: 604800 s
Negative TTL: 40000 s

Serial per nameserver

Nameserver	Serial
ns1.combell.eu (89.44.166.48)	1790581966
ns1.combell.eu (2a00:1c98:50::50)	1790581966
ns3.combell.net (83.217.73.172)	1790581966
ns3.combell.net (2a00:1c98::53:1)	1790581966
ns4.combell.net (86.39.202.67)	1790581966
ns4.combell.net (2001:1598:0:101::3)	1790581966

Checks

✓ Serial 1790581966 everywhere #22

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

SOA refresh 3h, retry 1h, expire 7d, negative TTL 11h6m40s.
✓ Primary is a public nameserver #24

The primary nameserver ns3.combell.net is one of the listed nameservers.
✓ Contact hostmaster@patientenfederatie.nl #25

The SOA RNAME hostmaster.patientenfederatie.nl means hostmaster@patientenfederatie.nl.
✓ Timestamp serial #26

The serial 1790581966 is a Unix timestamp (2026-09-28 07:52 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 5 iterations, 4-byte salt
Signatures valid until: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
65147	ECDSAP256SHA256 (13)	SHA256 B91383765F4F1D85…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
65147	KSK (257)	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 65147 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Signatures valid until 2026-10-29 #30

The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 5 iterations and a 4-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

15 records at the apex

Found

Read from: 89.44.166.48:53

Type	Value	TTL
SOA	ns3.combell.net. hostmaster.patientenfederatie.nl. 1790581966 10800 3600 604800 40000	3600
NS	ns4.combell.net.	3600
NS	ns3.combell.net.	3600
NS	ns1.combell.eu.	3600
A	2.18.244.16	600
A	2.18.244.23	600
A	104.110.191.7	600
AAAA	2a02:26f0:c900:b::5f65:4a02	600
AAAA	2a02:26f0:c900:b::5f65:4a0d	600
MX	0 patientenfederatie-nl.mail.protection.outlook.com.	3600
TXT	"MS=ms51605600"	3600
TXT	"v=spf1 include:_spf.mailersend.net include:spf.afas.online include:_spf.salesforce.com ip4:217.194.119.27 ip4:40.92.0.0/15 ip4:40.107.0.0/16 ip4:52.100.0.0/14 ip4:104.47.0.0/17 ip6:2a01:111:f400::/48 ip6:2a01:111:f403::/49 ip6:2a01:111:f403:8000::/51 ip6:" "2a01:111:f403:c000::/51 ip6:2a01:111:f403:f000::/52 ip4:5.22.248.0/25 ip4:5.39.185.31 ip4:5.39.185.32 ip4:5.39.185.33 ip4:5.39.185.34 ip4:5.39.185.37 ip4:5.39.185.38 ip4:5.39.185.40 ip4:5.39.185.43 ip4:46.165.232.171/27 ip4:82.204.43.40 ip4:82.204.43.41 i" "p4:82.204.43.42 ip4:95.211.2.192/27 ip4:95.211.112.131/27 ip4:130.117.251.9 ip4:130.117.251.10 ip4:130.117.54.107 ip4:138.201.61.176/28 ip4:138.201.146.160/28 ip4:148.251.71.0/27 ip4:185.18.239.2 ip4:185.201.16.0/22 ip4:207.244.64.160/27 ip4:207.244.83.24" "8/30 ip4:209.126.121.13/25 ip6:2001:1af8:4500:a034:101::2 ip6:2604:9a00:2010:a024:21::1 ip6:2001:978:2:6::20:a ip4:46.165.233.176 ip4:138.201.61.180 ip4:209.126.110.250 ip4:207.244.64.182 ip4:209.126.121.73 ip4:138.201.61.182 ip4:199.115.117.11 ip4:46.165" ".232.175 ip4:207.244.64.180 ip4:94.75.192.139 ip4:154.62.137.204 ip4:37.58.58.55 ip4:94.75.244.184 ip4:138.201.61.140 ip4:209.126.121.72 ip4:154.62.137.205 ip4:199.115.117.10 ip4:94.75.244.183 ip4:94.75.244.176 ip4:199.115.117.7 ip4:46.165.223.16 ip6:2001" ":978:2:6::20:10 ip6:2001:1af8:4400:a047:6::1 ip4:206.148.0.49 ip4:149.13.75.8 ip4:38.71.17.215 ip4:130.117.53.18 ip4:130.117.53.20 ip4:38.133.191.232 ip4:193.200.214.124 ip4:196.192.175.66 ip6:2001:978:2:2f::5:101 ip6:2001:978:2:7::162:102 ip6:2001:550:2:" "61::3bf:110 ip6:2406:3400:280:8::18 ip6:2001:978:2:2f::5:102 ip6:2001:550:2:8::5f:111 ip6:2001:668:1f:ffa4::17 ip4:217.21.177.125 ip4:217.21.190.0/26 ip4:77.241.82.64/27 ip4:178.208.39.128/26 ip4:178.208.39.0/24 ip4:178.208.52.128/25 ip4:178.208.40.0/25 i" "p4:37.148.176.128/25 ip4:178.208.36.0/26 ip4:77.241.92.172/32 ip4:77.241.92.173/32 ip4:77.241.92.171/32 ip4:94.198.164.28/30 ip4:94.198.164.32/30 ip4:83.217.77.128/26 ip4:178.208.32.0/26 ip4:176.62.168.242/31 ip6:2a00:1c98:10:2::/64 ip4:176.62.168.253 ip4" ":176.62.168.254 ip4:178.208.43.64/26 ip4:79.174.128.16/29 ip4:83.217.72.64/26 ip4:85.158.136.0/21 ip4:193.109.254.0/23 ip4:194.106.220.0/23 ip4:195.245.230.0/23 ip4:95.131.104.0/21 ip4:46.226.48.0/21 ip4:216.82.240.0/20 ip4:67.219.240.0/20 ip4:117.120.16." "0/21 ip4:103.9.96.0/22 ip4:157.97.115.3 ip4:74.117.206.142 ip4:212.11.79.0/24 ip4:83.217.82.254 ~all"	3600
CAA	0 issue "letsencrypt.org"	3600
CAA	0 iodef "mailto:webmaster@patientenfederatie.nl"	3600
CAA	0 issuewild ";"	3600

Checks

✓ TTLs within range #32

TTLs: A 10m, AAAA 10m, MX 1h, NS 1h.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
i

Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
✓ CAA restricts issuance #35

Certificates may be issued by: letsencrypt.org, none (issuance forbidden).