vtwonen.nl

Checked 21 October 2026, 21:26 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

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

Delegation

info

eur2.akam.net, eur5.akam.net, eur6.akam.net, ns1-125.akam.net, ns1-25.akam.net, usc2.akam.net, use2.akam.net, use5.akam.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
eur2.akam.net, eur5.akam.net, eur6.akam.net, ns1-125.akam.net, ns1-25.akam.net, usc2.akam.net, use2.akam.net, use5.akam.net
NS in the zone
eur2.akam.net, eur5.akam.net, eur6.akam.net, ns1-125.akam.net, ns1-25.akam.net, usc2.akam.net, use2.akam.net, use5.akam.net
NameserverAddressesNetwork (AS)Glue
eur2.akam.net95.100.173.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
eur5.akam.net23.74.25.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
eur6.akam.net2.22.230.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-125.akam.net193.108.91.125 2600:1401:2::7dAS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
ns1-25.akam.net193.108.91.25 2600:1401:2::19AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
usc2.akam.net184.26.160.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
use2.akam.net96.7.49.64AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
use5.akam.net2.16.40.64 2600:1403:a::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 8 nameservers #6
    Delegated to eur2.akam.net, eur5.akam.net, eur6.akam.net, ns1-125.akam.net, ns1-25.akam.net, usc2.akam.net, use2.akam.net, use5.akam.net.
  • ✓ 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 7 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 10 addresses.
  • 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: eur2.akam.net, eur5.akam.net, eur6.akam.net, usc2.akam.net, use2.akam.net.
    #13

Nameservers

warn

11 of 11 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
eur2.akam.net 95.100.173.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
eur5.akam.net 23.74.25.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.33
eur6.akam.net 2.22.230.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
ns1-125.akam.net 193.108.91.125NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
ns1-125.akam.net 2600:1401:2::7dNOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
ns1-25.akam.net 193.108.91.25NOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
ns1-25.akam.net 2600:1401:2::19NOERROR, 3 ms, authoritativenoyes / yesrefused41824.8
usc2.akam.net 184.26.160.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
use2.akam.net 96.7.49.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
use5.akam.net 2.16.40.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
use5.akam.net 2600:1403:a::40NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32

Checks

  • ✓ All respond #14
    All 11 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: eur2.akam.net: "48878.31"; eur5.akam.net: "48878.33"; eur6.akam.net: "41824.5"; ns1-125.akam.net: "41824.9"; ns1-125.akam.net: "41824.4"; ns1-25.akam.net: "41824.5"; ns1-25.akam.net: "41824.8"; usc2.akam.net: "48878.26"; use2.akam.net: "41824.9"; use5.akam.net: "48878.27"; use5.akam.net: "48878.32". Hide or replace the version string.
    #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 2023093005 · primary ns1-25.akam.net

Found

Primary (MNAME)
ns1-25.akam.net
Contact (RNAME)
hostmaster.persgroep.be
Serial
2023093005
Refresh / retry
14400 s / 1800 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
eur2.akam.net (95.100.173.64)2023093005
eur5.akam.net (23.74.25.64)2023093005
eur6.akam.net (2.22.230.64)2023093005
ns1-125.akam.net (193.108.91.125)2023093005
ns1-125.akam.net (2600:1401:2::7d)2023093005
ns1-25.akam.net (193.108.91.25)2023093005
ns1-25.akam.net (2600:1401:2::19)2023093005
usc2.akam.net (184.26.160.64)2023093005
use2.akam.net (96.7.49.64)2023093005
use5.akam.net (2.16.40.64)2023093005
use5.akam.net (2600:1403:a::40)2023093005

Checks

  • ✓ Serial 2023093005 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 30m, expire 14d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-25.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@persgroep.be #25
    The SOA RNAME hostmaster.persgroep.be means hostmaster@persgroep.be.
  • ✓ Date-based serial #26
    The serial 2023093005 follows the YYYYMMDDnn convention (2023-09-30).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
0 iterations, 0-byte salt
Signatures valid until
24 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
29496ECDSAP256SHA256 (13)SHA256 682A749D2FEFEBF9…NO
24533ECDSAP256SHA256 (13)SHA256 4506C5C0A1F5BFCF…yes

DNSKEY in the zone

Key tagRoleAlgorithm
11732ZSK (256)ECDSAP256SHA256 (13)
24533KSK (257)ECDSAP256SHA256 (13)
26184ZSK (256)ECDSAP256SHA256 (13)

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 29496 (SHA256). That is normal during a key rollover; otherwise remove them.
    #28
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 73h0m0s and created on demand; the current one was made at 2026-10-21 13:13 UTC and expires at 2026-10-24 14:13 UTC.
  • ✓ NSEC3 as recommended #31
    The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

warn

31 records at the apex

Found

Read from
95.100.173.64:53
TypeValueTTL
SOAns1-25.akam.net. hostmaster.persgroep.be. 2023093005 14400 1800 1209600 30086400
NSuse5.akam.net.3600
NSeur6.akam.net.3600
NSuse2.akam.net.3600
NSusc2.akam.net.3600
NSns1-125.akam.net.3600
NSeur2.akam.net.3600
NSeur5.akam.net.3600
NSns1-25.akam.net.3600
A2.16.204.820
A2.16.204.3320
AAAA2a02:26f0:b700:5::210:cc0820
AAAA2a02:26f0:b700:5::210:cc2120
MX5 alt1.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX1 aspmx.l.google.com.3600
TXT"_itlkc6be02ott7v75lpe1jaqi5qf9aq"900
TXT"google-site-verification=JMWAjivinWJ9rosGdHZY5UhZFfG-QRH8bL8qw4Jno8Y"900
TXT"MS=ms75987356"900
TXT"google-site-verification=c9ne7qJ8YcUCbUIX3VnPtaynRM5Hp6EQEgYNI0EZfbI"900
TXT"google-site-verification=9kdzE8aVIkDC2Es2hNh-Y0WPXl9t7kb__8JTXpx2f5s"900
TXT"facebook-domain-verification=ynod7uxy00989p58s6lpflcbgkx09n"900
TXT"v=spf1 include:_spf.google.com include:sparkpostmail.com include:spf.mandrillapp.com include:_spf.dpgmmservices.nl include:sendgrid.net ip4:87.250.157.224/28 ip6:2a02:f18:1:9de1::/64 ip4:80.69.67.19/24 ip6:2a01:7c8::2500/124 -all"900
TXT"94qkt7oa5ohthissrm0asjj7td"900
TXT"facebook-domain-verification=etbrg1egnmlgcv03l8d9czbrjy19a6"900
TXT"facebook-domain-verification=9996klnngkam4f7m0tmy70npmi13u9"900
TXT"klaviyo-site-verification=TrMBML"900
TXT"atlassian-domain-verification=gqfC576h6pKDntEMQCdrUMXTtOD2vfhKvXTSXAIxiT3BSdIBLzbPWwOkt0jwiITX"900
TXT"google-site-verification=HpBmNsXeFekQW_nKzGSwvkZDgCXZDDBQt2u6-71pP3U"900

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • 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