regelhulpenvoorbedrijven.nl

Checked 22 October 2026, 15:40 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 7 info

Registration

info

.nl country-code

Found

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

Delegation

info

ns1.dictu.nl, ns2.dictu.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.dictu.nl, ns2.dictu.nl
NS in the zone
ns1.dictu.nl, ns2.dictu.nl
NameserverAddressesNetwork (AS)Glue
ns1.dictu.nl145.12.216.1 2a04:9a00:1021:201c::1AS203396 MinEZ-DICTU - Ministerie van Economische Zaken, NL AS203396 MinEZ-DICTU - Ministerie van Economische Zaken, NL145.12.216.1 2a04:9a00:1021:201c::1
ns2.dictu.nl145.69.216.1 2a04:9a00:1022:201c::1AS203396 MinEZ-DICTU - Ministerie van Economische Zaken, NL AS203396 MinEZ-DICTU - Ministerie van Economische Zaken, NL145.69.216.1 2a04:9a00:1022:201c::1

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.dictu.nl, ns2.dictu.nl.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS203396 (MinEZ-DICTU - Ministerie van Economische Zaken, NL): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • 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

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.dictu.nl 145.12.216.1NOERROR, 22 ms, authoritativenoyes / yesrefused-
ns1.dictu.nl 2a04:9a00:1021:201c::1NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns2.dictu.nl 145.69.216.1NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns2.dictu.nl 2a04:9a00:1022:201c::1NOERROR, 15 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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 2020117398 · primary ns1.dictu.nl

Found

Primary (MNAME)
ns1.dictu.nl
Contact (RNAME)
datacom.dictu.nl
Serial
2020117398
Refresh / retry
43200 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.dictu.nl (145.12.216.1)2020117398
ns1.dictu.nl (2a04:9a00:1021:201c::1)2020117398
ns2.dictu.nl (145.69.216.1)2020117398
ns2.dictu.nl (2a04:9a00:1022:201c::1)2020117398

Checks

  • ✓ Serial 2020117398 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 12h, retry 1h, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dictu.nl is one of the listed nameservers.
  • ✓ Contact datacom@dictu.nl #25
    The SOA RNAME datacom.dictu.nl means datacom@dictu.nl.
  • ✓ Timestamp serial #26
    The serial 2020117398 is a Unix timestamp (2034-01-05 23:43 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
32627ECDSAP256SHA256 (13)SHA256 5E61E308F026E540…yes

DNSKEY in the zone

Key tagRoleAlgorithm
32627KSK (257)ECDSAP256SHA256 (13)
11242KSK (257)RSASHA256 (8)
53272KSK (257)RSASHA256 (8)
24775ZSK (256)ECDSAP256SHA256 (13)
57237ZSK (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 32627 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13), RSASHA256 (8).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 97h0m0s and created on demand; the current one was made at 2026-10-21 18:49 UTC and expires at 2026-10-25 19:27 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

info

13 records at the apex

Found

Read from
145.12.216.1:53
TypeValueTTL
SOAns1.dictu.nl. datacom.dictu.nl. 2020117398 43200 3600 2419200 90010800
NSns2.dictu.nl.10800
NSns1.dictu.nl.10800
A93.92.103.12110800
AAAA2001:4c10:1018:4096::4210800
MX100 mail03.dictu.nl.10800
MX10 mail02.dictu.nl.10800
MX100 mail01.dictu.nl.10800
MX10 mail04.dictu.nl.10800
TXT"v=spf1 include:_spf.dictu.nl ip4:5.61.250.130 ip4:93.119.1.243 ip4:84.241.182.230 -all"10800
TXT"_6t80lairs80an214wy2fofwlrq7l5qa"10800
TXT"_vy9o55wh110u5pj2jza82bq9z7951mg"10800
TXT"google-site-verification=uY_fXGPSZno45EippaJA4YlfXIGXktlYNi5948HNWU0"10800

Checks

  • ✓ TTLs within range #32
    TTLs: A 3h, AAAA 3h, MX 3h, NS 3h. The NS TTL at the parent is 1h and in the zone 3h; 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