saxion.nl

Checked 21 October 2026, 21:25 UTC · via 8.8.8.8
!Passed with warnings
29 passed 1 warning 0 failed 5 info

Registration

info

.nl country-code · SURF B.V.

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
SURF B.V.
Registered
13 April 2000
Last changed
1 October 2026
Status
active
Registry nameservers
ns1.saxion.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.saxion.nl, ns2.surfnet.nl, ns3.surfnet.nl
RDAP server
https://rdap.sidn.nl/

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
    Expiry date not published
    The registry does not publish the expiry date in RDAP. Check it with your registrar.
    #3
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

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

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.saxion.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.saxion.nl, ns2.surfnet.nl, ns3.surfnet.nl
NS in the zone
ns1.saxion.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.saxion.nl, ns2.surfnet.nl, ns3.surfnet.nl
NameserverAddressesNetwork (AS)Glue
ns1.saxion.nl145.76.2.75AS1103 SURFNET-NL - SURF B.V., NL145.76.2.75
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.saxion.nl145.76.2.85AS1103 SURFNET-NL - SURF B.V., NL145.76.2.85
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

  • ✓ 6 nameservers #6
    Delegated to ns1.saxion.nl, ns1.surfnet.nl, ns1.zurich.surf.net, ns2.saxion.nl, ns2.surfnet.nl, ns3.surfnet.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.saxion.nl, ns2.saxion.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 5 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS1103 (SURFNET-NL - SURF B.V., NL): 8 addresses; AS559 (Switch - SWITCH, CH): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .nl.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.saxion.nl, ns2.saxion.nl.
    #13

Nameservers

info

10 of 10 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.saxion.nl 145.76.2.75NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns1.surfnet.nl 192.87.106.101NOERROR, 10 ms, authoritativenoyes / yesrefusedThis is a SURFnet nameserver - dns-beheer@surfnet.nl
ns1.surfnet.nl 2001:610:1:800a:192:87:106:101NOERROR, 10 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.saxion.nl 145.76.2.85NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns2.surfnet.nl 192.87.36.2NOERROR, 13 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 10 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

pass

serial 2024074577 · primary ns1.surfnet.nl

Found

Primary (MNAME)
ns1.surfnet.nl
Contact (RNAME)
hostmaster.saxion.nl
Serial
2024074577
Refresh / retry
28800 s / 1800 s
Expire
691200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.saxion.nl (145.76.2.75)2024074577
ns1.surfnet.nl (192.87.106.101)2024074577
ns1.surfnet.nl (2001:610:1:800a:192:87:106:101)2024074577
ns1.zurich.surf.net (195.176.255.9)2024074577
ns1.zurich.surf.net (2001:620:0:9::1103)2024074577
ns2.saxion.nl (145.76.2.85)2024074577
ns2.surfnet.nl (192.87.36.2)2024074577
ns2.surfnet.nl (2001:610:3:200a:192:87:36:2)2024074577
ns3.surfnet.nl (195.169.124.71)2024074577
ns3.surfnet.nl (2001:610:0:800c:195:169:124:71)2024074577

Checks

  • ✓ Serial 2024074577 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 30m, expire 8d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.surfnet.nl is one of the listed nameservers.
  • ✓ Contact hostmaster@saxion.nl #25
    The SOA RNAME hostmaster.saxion.nl means hostmaster@saxion.nl.
  • ✓ Timestamp serial #26
    The serial 2024074577 is a Unix timestamp (2034-02-20 18:56 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
10 iterations, 9-byte salt
Signatures valid until
25 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
42566ECDSAP256SHA256 (13)SHA256 91D32934E9CC82A3…yes

DNSKEY in the zone

Key tagRoleAlgorithm
42566KSK (257)ECDSAP256SHA256 (13)
34784ZSK (256)ECDSAP256SHA256 (13)
31859ZSK (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 42566 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 96h0m0s and created on demand; the current one was made at 2026-10-21 10:33 UTC and expires at 2026-10-25 10:57 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 10 iterations and a 9-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

20 records at the apex

Found

Read from
145.76.2.75:53
TypeValueTTL
SOAns1.surfnet.nl. hostmaster.saxion.nl. 2024074577 28800 1800 691200 3003600
NSns1.surfnet.nl.3600
NSns1.zurich.surf.net.3600
NSns3.surfnet.nl.3600
NSns2.surfnet.nl.3600
NSns1.saxion.nl.3600
NSns2.saxion.nl.3600
A145.76.16.2533600
MX10 saxion-nl.r-v1.mx.microsoft.3600
TXT"google-site-verification=aT9ia5mGiBSXmId-e8RElDseJqjOrEJdYV7fSDU96xM"300
TXT"apple-domain-verification=DqCdDbIDkVKtFBrJ"300
TXT"HARICA-5hsKXdjPg6Q5v8scCXn"300
TXT"google-site-verification=qcJ-sfVw8F9XAkXTSs-TpLnsBGXlkHnQs8qL7EhgIVA"300
TXT"v=spf1 ip4:145.76.6.219 ip4:145.76.6.220 ip4:145.76.2.74 ip4:145.76.2.84 include:spf.protection.outlook.com include:_spf.qualtrics.com exists:_l.%{l}._o.%{o}._i.%{i}._d.%{d}._h.%{h}.spftest.saxion.nl ~all"300
TXT"atlassian-domain-verification=Kb3g4e306tD-ZLAYDzIcEPRxNqhloNuqGLWyI9L8noQVdwmwjmmLHwZrGbPHelzV"300
TXT"facebook-domain-verification=o4mh9z1s3zkviio9hxayt5agr1wgmh"300
CAA0 iodef "mailto:hostmaster@saxion.nl"3600
CAA0 issue "amazon.com"3600
CAA0 issuewild "harica.gr"3600
CAA0 issue "harica.gr"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, harica.gr.