eur.nl

Checked 21 October 2026, 21:15 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 5 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/eur.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/eur.nl returned HTTP 429
    #3

Delegation

pass

ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl
NS in the zone
ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.nl
NameserverAddressesNetwork (AS)Glue
ns1.surfnet.nl192.87.106.101 2001:610:1:800a:192:87:106:101AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL192.87.106.101 2001:610:1:800a:192:87:106:101
ns1.zurich.surf.net195.176.255.9 2001:620:0:9::1103AS559 Switch - SWITCH, CH AS559 Switch - SWITCH, CH-
ns2.surfnet.nl192.87.36.2 2001:610:3:200a:192:87:36:2AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL192.87.36.2 2001:610:3:200a:192:87:36:2
ns3.surfnet.nl195.169.124.71 2001:610:0:800c:195:169:124:71AS1103 SURFNET-NL - SURF B.V., NL AS1103 SURFNET-NL - SURF B.V., NL195.169.124.71 2001:610:0:800c:195:169:124:71

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.surfnet.nl, ns1.zurich.surf.net, ns2.surfnet.nl, ns3.surfnet.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 4 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 6 addresses; AS559 (Switch - SWITCH, CH): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .nl.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.surfnet.nl 192.87.106.101NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.surfnet.nl 2001:610:1:800a:192:87:106:101NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.zurich.surf.net 195.176.255.9NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surf.nl
ns1.zurich.surf.net 2001:620:0:9::1103NOERROR, 9 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surf.nl
ns2.surfnet.nl 192.87.36.2NOERROR, 12 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns2.surfnet.nl 2001:610:3:200a:192:87:36:2NOERROR, 12 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns3.surfnet.nl 195.169.124.71NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns3.surfnet.nl 2001:610:0:800c:195:169:124:71NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl

Checks

  • ✓ All respond #14
    All 8 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.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl"; ns1.zurich.surf.net: "This is a SURFnet nameserver - dns-beheer@surf.nl"; ns2.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl"; ns3.surfnet.nl: "This is a SURFnet nameserver - dns-beheer@surfnet.nl".
    #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

info

serial 2014638178 · primary ns6.eur.nl

Found

Primary (MNAME)
ns6.eur.nl
Contact (RNAME)
dnsmaster.nic.eur.nl
Serial
2014638178
Refresh / retry
86400 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.surfnet.nl (192.87.106.101)2014638178
ns1.surfnet.nl (2001:610:1:800a:192:87:106:101)2014638178
ns1.zurich.surf.net (195.176.255.9)2014638178
ns1.zurich.surf.net (2001:620:0:9::1103)2014638178
ns2.surfnet.nl (192.87.36.2)2014638178
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)2014638178
ns3.surfnet.nl (195.169.124.71)2014638178
ns3.surfnet.nl (2001:610:0:800c:195:169:124:71)2014638178

Checks

  • ✓ Serial 2014638178 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 1h, expire 28d, negative TTL 15m.
  • i
    Hidden master
    The primary nameserver ns6.eur.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 dnsmaster@nic.eur.nl #25
    The SOA RNAME dnsmaster.nic.eur.nl means dnsmaster@nic.eur.nl.
  • ✓ Timestamp serial #26
    The serial 2014638178 is a Unix timestamp (2033-11-03 13:42 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
10 iterations, 13-byte salt
Signatures valid until
25 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
51040RSASHA256 (8)SHA256 C3A1AA141E746997…NO
16570RSASHA256 (8)SHA256 653F2EDEF7491112…yes

DNSKEY in the zone

Key tagRoleAlgorithm
8299ZSK (256)RSASHA256 (8)
16570KSK (257)RSASHA256 (8)
28554ZSK (256)RSASHA256 (8)
31003ZSK (256)RSASHA256 (8)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • i
    Unused DS records
    These DS records match no key in the zone: key tag 51040 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ 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 2026-10-21 14:42 UTC and expires at 2026-10-25 15:10 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 10 iterations and a 13-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

pass

30 records at the apex

Found

Read from
192.87.106.101:53
TypeValueTTL
SOAns6.eur.nl. dnsmaster.nic.eur.nl. 2014638178 86400 3600 2419200 90028800
NSns1.zurich.surf.net.28800
NSns1.surfnet.nl.28800
NSns2.surfnet.nl.28800
NSns3.surfnet.nl.28800
A145.5.1.1328800
MX0 eur-nl.u-v1.mx.microsoft.600
MX100 eur-nl.u-v1.mx.microsoft.600
TXT"atlassian-sending-domain-verification=a3167b86-dd70-4cce-afe1-483a0ea29125"28800
TXT"atlassian-domain-verification=kURX4B7iRnGEndh49X3Y8rq2tTKFeUqiqh2n6sCvxAgB7mN5kIgFkEKhN1/Bq6h4"28800
TXT"v=spf1 include:spf.protection.outlook.com include:_spf-dc33.sapsf.eu ip4:145.5.189.2 include:spf.flowmailer.net include:_spf.trinico.net include:spf.mailcamp.nl -all"28800
TXT"DomainVerification=PB6MCJE440ENQI4R30H3SC344Z8YTY1ZMU1EMMYM0V4PX5QX4LBJGFFMHCXFZFWX"28800
TXT"miro-verification=3398bd3172ee4fdacc0f52cbb57f29046f36b258"28800
TXT"dropbox-domain-verification=w1n7zplsemor"28800
TXT"lucidlink-verification=4J4J8ENHA0YP2VC3V34NSSGXBC"28800
TXT"d365mktkey=9ORp7o73g5MCxKaBRiogxHXoYpxC3PXlNbBwawcGZTYx"28800
TXT"apple-domain-verification=39o70d6krwowTWam"28800
TXT"mentimeter-0cdafe6f-52e8-4f3d-95f1-fb128dba4fae"28800
TXT"google-site-verification=7G3yzcbmHsVEQ1d5JQbX_TYGFOQMm5mc1R7-LwRX5V8"28800
TXT"onetrust-domain-verification=998a55c3893542bf9fd293e5d43cace6"28800
TXT"adobe-idp-site-verification=5d3a6228d29e80cf1fe4d4a5780ebd08c45fc8e741b748a0d7e664137ce90cc3"28800
TXT"HARICA-1mgp1YBwvUlOlcbCekx"28800
CAA0 issue "sectigo.com"28800
CAA0 issuewild "harica.gr"28800
CAA0 issue "amazon.com"28800
CAA0 issuewild "letsencrypt.org"28800
CAA0 issuewild "sectigo.com"28800
CAA0 issue "letsencrypt.org"28800
CAA0 issue "harica.gr"28800
CAA0 iodef "mailto:cert@eur.nl"28800

Checks

  • ✓ TTLs within range #32
    TTLs: A 8h, MX 10m, NS 8h. The NS TTL at the parent is 1h and in the zone 8h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: sectigo.com, harica.gr, amazon.com, letsencrypt.org.