vos-web.nl

Checked 22 October 2026, 17:10 UTC · via 8.8.8.8
!Passed with warnings
21 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/vos-web.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/vos-web.nl returned HTTP 429
    #3

Delegation

info

ns3.tandata.io, ns4.tandata.io

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns3.tandata.io, ns4.tandata.io
NS in the zone
ns3.tandata.io, ns4.tandata.io
NameserverAddressesNetwork (AS)Glue
ns3.tandata.io141.94.26.134 2001:41d0:304:200::66feAS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR-
ns4.tandata.io54.37.73.138 2001:41d0:701:1100::7ac0AS16276 OVH - OVH SAS, FR AS16276 OVH - OVH SAS, FR-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns3.tandata.io, ns4.tandata.io.
    #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 (AS16276 (OVH - OVH SAS, FR): 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 .io
    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

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns3.tandata.io 141.94.26.134NOERROR, 16 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns3.tandata.io 2001:41d0:304:200::66feNOERROR, 16 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns4.tandata.io 54.37.73.138NOERROR, 8 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu
ns4.tandata.io 2001:41d0:701:1100::7ac0NOERROR, 9 ms, authoritativenoyes / yesrefused9.18.39-0ubuntu0.22.04.7-Ubuntu

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns3.tandata.io: "9.18.39-0ubuntu0.22.04.7-Ubuntu"; ns4.tandata.io: "9.18.39-0ubuntu0.22.04.7-Ubuntu". 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 2026101606 · primary ns3.tandata.io

Found

Primary (MNAME)
ns3.tandata.io
Contact (RNAME)
vos2008stellendam.gmail.com
Serial
2026101606
Refresh / retry
10800 s / 3600 s
Expire
1209600 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns3.tandata.io (141.94.26.134)2026101606
ns3.tandata.io (2001:41d0:304:200::66fe)2026101606
ns4.tandata.io (54.37.73.138)2026101606
ns4.tandata.io (2001:41d0:701:1100::7ac0)2026101606

Checks

  • ✓ Serial 2026101606 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 14d, negative TTL 3h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns3.tandata.io is one of the listed nameservers.
  • ✓ Contact vos2008stellendam@gmail.com #25
    The SOA RNAME vos2008stellendam.gmail.com means vos2008stellendam@gmail.com.
  • ✓ Date-based serial #26
    The serial 2026101606 follows the YYYYMMDDnn convention (2026-10-16).

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

7 records at the apex

Found

Read from
141.94.26.134:53
TypeValueTTL
SOAns3.tandata.io. vos2008stellendam.gmail.com. 2026101606 10800 3600 1209600 1080014400
NSns3.tandata.io.14400
NSns4.tandata.io.14400
A46.4.38.18214400
AAAA2a01:4f8:221:3353::214400
MX10 mail.vos-web.nl.14400
TXT"v=spf1 +a +mx +ip4:46.4.38.182 +ip6:2a01:4f8:221:3353::2 -all"14400

Checks

  • ✓ TTLs within range #32
    TTLs: A 4h, AAAA 4h, MX 4h, NS 4h. The NS TTL at the parent is 1h and in the zone 4h; 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.
  • 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