Domain report: optisport.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

pass

ns-3.eu, ns1.hix.nl, ns2.hix.nl

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns-3.eu, ns1.hix.nl, ns2.hix.nl
NS in the zone: ns-3.eu, ns1.hix.nl, ns2.hix.nl

Nameserver	Addresses	Network (AS)	Glue
ns-3.eu	85.10.135.155 2a01:7c8:d007:462::155	AS20857 TRANSIP-AS - Signet B.V., NL AS20857 TRANSIP-AS - Signet B.V., NL	-
ns1.hix.nl	83.137.192.101 2a00:a0c0:3::1:2	AS34233 SUPERIOR-AS - Superior B.V., NL AS34233 SUPERIOR-AS - Superior B.V., NL	83.137.192.101 2a00:a0c0:3::1:2
ns2.hix.nl	31.3.110.75 2a00:a0c0:3::1:3	AS197731 TUXIS - The Internet Engineering Group B.V., NL AS34233 SUPERIOR-AS - Superior B.V., NL	31.3.110.75 2a00:a0c0:3::1:3

Checks

✓ 3 nameservers #6

Delegated to ns-3.eu, ns1.hix.nl, ns2.hix.nl.
✓ 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 2 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS197731 (TUXIS - The Internet Engineering Group B.V., NL): 1 address; AS20857 (TRANSIP-AS - Signet B.V., NL): 2 addresses; AS34233 (SUPERIOR-AS - Superior B.V., NL): 3 addresses.
✓ Nameserver names under 2 TLDs #12

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

Every nameserver has an IPv6 address.

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-3.eu 85.10.135.155	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns-3.eu 2a01:7c8:d007:462::155	NOERROR, 14 ms, authoritative	no	yes / yes	refused	-
ns1.hix.nl 83.137.192.101	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns1.hix.nl 2a00:a0c0:3::1:2	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns2.hix.nl 31.3.110.75	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns2.hix.nl 2a00:a0c0:3::1:3	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-

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.
✓ 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 2013021200 · primary ns1.hix.nl

Found

Primary (MNAME): ns1.hix.nl
Contact (RNAME): postmaster.optisport.nl
Serial: 2013021200
Refresh / retry: 10800 s / 3600 s
Expire: 604800 s
Negative TTL: 900 s

Serial per nameserver

Nameserver	Serial
ns-3.eu (85.10.135.155)	2013021200
ns-3.eu (2a01:7c8:d007:462::155)	2013021200
ns1.hix.nl (83.137.192.101)	2013021200
ns1.hix.nl (2a00:a0c0:3::1:2)	2013021200
ns2.hix.nl (31.3.110.75)	2013021200
ns2.hix.nl (2a00:a0c0:3::1:3)	2013021200

Checks

✓ Serial 2013021200 everywhere #22

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

SOA refresh 3h, retry 1h, expire 7d, negative TTL 15m.
✓ Primary is a public nameserver #24

The primary nameserver ns1.hix.nl is one of the listed nameservers.
✓ Contact postmaster@optisport.nl #25

The SOA RNAME postmaster.optisport.nl means postmaster@optisport.nl.
✓ Date-based serial #26

The serial 2013021200 follows the YYYYMMDDnn convention (2013-02-12).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver: no
Denial of existence: NSEC
Signatures valid until: 5 November 2026

DNSKEY in the zone

Key tag	Role	Algorithm
37509	KSK (257)	ECDSAP256SHA256 (13)

Checks

!

Signed but not delegated securely

The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.

#27
✓ 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.
i

NSEC

The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.

#31

Records

info

13 records at the apex

Found

Read from: 85.10.135.155:53

Type	Value	TTL
SOA	ns1.hix.nl. postmaster.optisport.nl. 2013021200 10800 3600 604800 900	900
NS	ns2.hix.nl.	900
NS	ns1.hix.nl.	900
NS	ns-3.eu.	900
A	3.74.54.211	766
AAAA	2a05:d014:a90:4601:56db:d312:356e:57a8	900
MX	10 mx.spam-filter.email.	900
MX	20 fallbackmx.spam-filter.cloud.	900
TXT	"v=spf1 ip4:5.172.45.6 ip4:193.37.205.73 ip4:46.182.222.142 ip4:91.192.38.98 ip4:178.255.193.244 ip4:46.182.222.130 ip4:46.182.222.133 ip4:149.72.114.169 ip4:212.72.62.129/27 ip4:80.246.186.181 include:spf.afas.online include:_spf.spam-filter.email include" ":spf.mailjet.com include:spf.icontroller.eu include:spf.dewi-online.nl include:autotask.net include:spf.flowmailer.net include:spf.protection.outlook.com -all"	900
TXT	"google-site-verification=weIQtSVFB0ljKTX4irUDulJCt-j9I2uebGnRzSZkyeM"	900
TXT	"a9ca0e810967cefbc18304ac5c73f0f3c725bec627e82452f4572c1b5535f8c1"	900
TXT	"brevo-code:a38027036bfbe129149459fc21f69eeb"	900
TXT	"google-site-verification=BMEbHacgYwUNbp4VyQrzJEfvG313N4Hq-Jsj_wh3XCY"	900

Checks

✓ TTLs within range #32

TTLs: A 12m46s, AAAA 15m, MX 15m, NS 15m. The NS TTL at the parent is 1h and in the zone 15m; 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
i

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