sonnenborgh.nl

Checked 22 October 2026, 16:10 UTC · via 8.8.8.8
!Passed with warnings
18 passed 2 warnings 0 failed 9 info

Registration

info

.nl country-code

Found

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

Delegation

warn

auth01.ib.routit.net, auth02.ib.routit.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
auth01.ib.routit.net, auth02.ib.routit.net
NS in the zone
auth01-peer.ib.routit.net, auth02-peer.ib.routit.net
NameserverAddressesNetwork (AS)Glue
auth01-peer.ib.routit.net (zone only)213.144.232.181 2a02:22a0::a1AS28685 ASN-ROUTIT - Routit BV, NL AS28685 ASN-ROUTIT - Routit BV, NL-
auth01.ib.routit.net (parent only)213.144.232.181 2a02:22a0::a1AS28685 ASN-ROUTIT - Routit BV, NL AS28685 ASN-ROUTIT - Routit BV, NL-
auth02-peer.ib.routit.net (zone only)213.144.232.182 2a02:22a0:ffff:ffff::a1AS28685 ASN-ROUTIT - Routit BV, NL AS28685 ASN-ROUTIT - Routit BV, NL-
auth02.ib.routit.net (parent only)213.144.232.182AS28685 ASN-ROUTIT - Routit BV, NL-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: auth01.ib.routit.net, auth02.ib.routit.net.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: auth01.ib.routit.net, auth02.ib.routit.net; only in the zone: auth01-peer.ib.routit.net, auth02-peer.ib.routit.net. auth01-peer.ib.routit.net, auth01.ib.routit.net, auth02-peer.ib.routit.net, auth02.ib.routit.net report NS auth01-peer.ib.routit.net auth02-peer.ib.routit.net.
    #7
  • ✓ 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.
  • i
    One address family in one network
    all IPv4 addresses are in 213.144.232.0/24, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS28685 (ASN-ROUTIT - Routit BV, NL): 7 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 .net
    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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: auth02.ib.routit.net.
    #13

Nameservers

pass

7 of 7 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
auth01-peer.ib.routit.net 213.144.232.181NOERROR, 14 ms, authoritativenoyes / yesrefused-
auth01-peer.ib.routit.net 2a02:22a0::a1NOERROR, 11 ms, authoritativenoyes / yesrefused-
auth01.ib.routit.net 213.144.232.181NOERROR, 12 ms, authoritativenoyes / yesrefused-
auth01.ib.routit.net 2a02:22a0::a1NOERROR, 11 ms, authoritativenoyes / yesrefused-
auth02-peer.ib.routit.net 213.144.232.182NOERROR, 11 ms, authoritativenoyes / yesrefused-
auth02-peer.ib.routit.net 2a02:22a0:ffff:ffff::a1NOERROR, 11 ms, authoritativenoyes / yesrefused-
auth02.ib.routit.net 213.144.232.182NOERROR, 9 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 7 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 40 · primary auth01-peer.ib.routit.net

Found

Primary (MNAME)
auth01-peer.ib.routit.net
Contact (RNAME)
noc.routit.nl
Serial
40
Refresh / retry
1800 s / 900 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
auth01-peer.ib.routit.net (213.144.232.181)40
auth01-peer.ib.routit.net (2a02:22a0::a1)40
auth01.ib.routit.net (213.144.232.181)40
auth01.ib.routit.net (2a02:22a0::a1)40
auth02-peer.ib.routit.net (213.144.232.182)40
auth02-peer.ib.routit.net (2a02:22a0:ffff:ffff::a1)40
auth02.ib.routit.net (213.144.232.182)40

Checks

  • ✓ Serial 40 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 30m, retry 15m, expire 7d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver auth01-peer.ib.routit.net is one of the listed nameservers.
  • ✓ Contact noc@routit.nl #25
    The SOA RNAME noc.routit.nl means noc@routit.nl.
  • ✓ Counter serial #26
    The serial 40 is a plain counter.

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

info

9 records at the apex

Found

Read from
213.144.232.181:53
TypeValueTTL
SOAauth01-peer.ib.routit.net. noc.routit.nl. 40 1800 900 604800 9003600
NSauth01-peer.ib.routit.net.3600
NSauth02-peer.ib.routit.net.3600
A91.142.254.1123600
MX5 sonnenborgh-nl.mail.protection.outlook.com.3600
TXT"MS=ms80424000"3600
TXT"v=spf1 include:spf.protection.outlook.com include:spf.antispamcloud.com include:sendgrid.net a:msa1.cramgo.nl a:msa2.cramgo.nl -all"3600
TXT"brevo-code:e60d6ebbd39d6b1d8b13608e41abbd0e"3600
TXT"google-site-verification=6KkouzPmLSGMf8tXxkJ8b0L5FbZwHWaLfuk2gLOUNnA"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.
  • 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