Domain report: xel.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

info

ns1.xel.nl, ns2.xel.nl, ns3.xel.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns1.xel.nl, ns2.xel.nl, ns3.xel.nl
NS in the zone: ns1.xel.nl, ns2.xel.nl, ns3.xel.nl

Nameserver	Addresses	Network (AS)	Glue
ns1.xel.nl	213.154.226.10 2001:7b8:620:1::d59a:e20a	AS12859 NL-BIT - BIT BV, NL AS12859 NL-BIT - BIT BV, NL	213.154.226.10 2001:7b8:620:1::d59a:e20a
ns2.xel.nl	213.154.226.20 2001:7b8:620:1::d59a:e214	AS12859 NL-BIT - BIT BV, NL AS12859 NL-BIT - BIT BV, NL	213.154.226.20 2001:7b8:620:1::d59a:e214
ns3.xel.nl	78.46.142.112 2a01:4f8:190:610e::2	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	78.46.142.112 2a01:4f8:190:610e::2

Checks

✓ 3 nameservers #6

Delegated to ns1.xel.nl, ns2.xel.nl, ns3.xel.nl.
✓ 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.xel.nl, ns2.xel.nl, ns3.xel.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 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS12859 (NL-BIT - BIT BV, NL): 4 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 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

info

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.xel.nl 213.154.226.10	NOERROR, 16 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns1.xel.nl 2001:7b8:620:1::d59a:e20a	NOERROR, 12 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns2.xel.nl 213.154.226.20	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns2.xel.nl 2001:7b8:620:1::d59a:e214	NOERROR, 11 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns3.xel.nl 78.46.142.112	NOERROR, 4 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns3.xel.nl 2a01:4f8:190:610e::2	NOERROR, 4 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/

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.xel.nl: "Served by PowerDNS - https://www.powerdns.com/"; ns2.xel.nl: "Served by PowerDNS - https://www.powerdns.com/"; ns3.xel.nl: "Served by PowerDNS - https://www.powerdns.com/".

#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 2026101502 · primary ns1.xel.nl

Found

Primary (MNAME): ns1.xel.nl
Contact (RNAME): hostmaster.xel.nl
Serial: 2026101502
Refresh / retry: 14400 s / 3600 s
Expire: 604800 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.xel.nl (213.154.226.10)	2026101502
ns1.xel.nl (2001:7b8:620:1::d59a:e20a)	2026101502
ns2.xel.nl (213.154.226.20)	2026101502
ns2.xel.nl (2001:7b8:620:1::d59a:e214)	2026101502
ns3.xel.nl (78.46.142.112)	2026101502
ns3.xel.nl (2a01:4f8:190:610e::2)	2026101502

Checks

✓ Serial 2026101502 everywhere #22

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

SOA refresh 4h, retry 1h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

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

The SOA RNAME hostmaster.xel.nl means hostmaster@xel.nl.
✓ Date-based serial #26

The serial 2026101502 follows the YYYYMMDDnn convention (2026-10-15).

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: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
4480	ECDSAP256SHA256 (13)	SHA256 6A2B35C61F793079…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
4480	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 4480 (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 as recommended #31

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

Records

info

13 records at the apex

Found

Read from: 213.154.226.10:53

Type	Value	TTL
SOA	ns1.xel.nl. hostmaster.xel.nl. 2026101502 14400 3600 604800 3600	1800
NS	ns1.xel.nl.	1800
NS	ns3.xel.nl.	1800
NS	ns2.xel.nl.	1800
A	213.154.226.2	1800
AAAA	2001:7b8:620:1::d59a:e202	1800
MX	10 mx2.xel.nl.	1800
MX	15 mx3.xel.nl.	1800
MX	10 mx11.xel.nl.	1800
MX	10 mx1.xel.nl.	1800
TXT	"v=spf1 include:_spf.mlsend.com include:spf.xel.nl include:servers.mcsv.net include:registrarmail.net include:mail.registrar.eu -all"	1800
CAA	0 issue "letsencrypt.org"	1800
CAA	0 issue "sectigo.com"	1800

Checks

✓ TTLs within range #32

TTLs: A 30m, AAAA 30m, MX 30m, NS 30m. The NS TTL at the parent is 1h and in the zone 30m; resolvers may use either.
✓ 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, sectigo.com.