plusonline.nl

Checked 21 October 2026, 21:24 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.nl country-code · Combell

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Combell
Registered
19 December 2000
Last changed
18 December 2025
Status
active
Registry nameservers
ns1.combell.eu, ns3.combell.net, ns4.combell.net
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

warn

ns1.combell.eu, ns3.combell.net, ns4.combell.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.combell.eu, ns3.combell.net, ns4.combell.net
NS in the zone
ns1.european-server.eu, ns3.european-server.com, ns4.european-server.com
NameserverAddressesNetwork (AS)Glue
ns1.combell.eu (parent only)89.44.166.48 2a00:1c98:50::50AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE-
ns1.european-server.eu (zone only)89.44.166.48 2a00:1c98:50::50AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE-
ns3.combell.net (parent only)83.217.73.172 2a00:1c98::53:1AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE-
ns3.european-server.com (zone only)83.217.73.172 2a00:1c98::53:1AS34762 COMBELL-AS - Combell NV, BE AS34762 COMBELL-AS - Combell NV, BE-
ns4.combell.net (parent only)86.39.202.67 2001:1598:0:101::3AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE-
ns4.european-server.com (zone only)86.39.202.67 2001:1598:0:101::3AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE AS28747 EASYHOST-COLO-AS - Easyhost BVBA, BE-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.combell.eu, ns3.combell.net, ns4.combell.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.combell.eu, ns3.combell.net, ns4.combell.net; only in the zone: ns1.european-server.eu, ns3.european-server.com, ns4.european-server.com. ns1.combell.eu, ns1.european-server.eu, ns3.combell.net, ns3.european-server.com, ns4.combell.net, ns4.european-server.com report NS ns1.european-server.eu ns3.european-server.com ns4.european-server.com.
    #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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS28747 (EASYHOST-COLO-AS - Easyhost BVBA, BE): 4 addresses; AS34762 (COMBELL-AS - Combell NV, BE): 8 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .eu, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

info

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.combell.eu 89.44.166.48NOERROR, 10 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns1.combell.eu 2a00:1c98:50::50NOERROR, 10 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns1.european-server.eu 89.44.166.48NOERROR, 10 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns1.european-server.eu 2a00:1c98:50::50NOERROR, 10 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns3.combell.net 83.217.73.172NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns3.combell.net 2a00:1c98::53:1NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns3.european-server.com 83.217.73.172NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns3.european-server.com 2a00:1c98::53:1NOERROR, 13 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns4.combell.net 86.39.202.67NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns4.combell.net 2001:1598:0:101::3NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns4.european-server.com 86.39.202.67NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis
ns4.european-server.com 2001:1598:0:101::3NOERROR, 14 ms, authoritativenoyes / yesrefusedYou are on a need to know basis

Checks

  • ✓ All respond #14
    All 12 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.combell.eu: "You are on a need to know basis"; ns1.european-server.eu: "You are on a need to know basis"; ns3.combell.net: "You are on a need to know basis"; ns3.european-server.com: "You are on a need to know basis"; ns4.combell.net: "You are on a need to know basis"; ns4.european-server.com: "You are on a need to know basis".
    #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 1791279738 · primary ns1.european-server.eu

Found

Primary (MNAME)
ns1.european-server.eu
Contact (RNAME)
hostmaster.plusonline.nl
Serial
1791279738
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
40000 s

Serial per nameserver

NameserverSerial
ns1.combell.eu (89.44.166.48)1791279738
ns1.combell.eu (2a00:1c98:50::50)1791279738
ns1.european-server.eu (89.44.166.48)1791279738
ns1.european-server.eu (2a00:1c98:50::50)1791279738
ns3.combell.net (83.217.73.172)1791279738
ns3.combell.net (2a00:1c98::53:1)1791279738
ns3.european-server.com (83.217.73.172)1791279738
ns3.european-server.com (2a00:1c98::53:1)1791279738
ns4.combell.net (86.39.202.67)1791279738
ns4.combell.net (2001:1598:0:101::3)1791279738
ns4.european-server.com (86.39.202.67)1791279738
ns4.european-server.com (2001:1598:0:101::3)1791279738

Checks

  • ✓ Serial 1791279738 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 11h6m40s.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.european-server.eu is one of the listed nameservers.
  • ✓ Contact hostmaster@plusonline.nl #25
    The SOA RNAME hostmaster.plusonline.nl means hostmaster@plusonline.nl.
  • ✓ Timestamp serial #26
    The serial 1791279738 is a Unix timestamp (2026-10-06 09:42 UTC).

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

11 records at the apex

Found

Read from
89.44.166.48:53
TypeValueTTL
SOAns1.european-server.eu. hostmaster.plusonline.nl. 1791279738 10800 3600 604800 400003600
NSns4.european-server.com.86400
NSns3.european-server.com.86400
NSns1.european-server.eu.86400
A87.233.150.1803600
MX0 plusonline-nl.mail.protection.outlook.com.3600
TXT"v=spf1 ip4:31.193.181.87 ip4:87.233.150.168 ip4:87.233.150.167 include:spf.roularta.be include:spf.protection.outlook.com -all"3600
TXT"v=spf1 mx a include:_spf.relay.mailprotect.be ~all"3600
TXT"google-site-verification=f_RuVIuRI3CMa28eozhRW9hVlzJNJVAAluSEQ3LvCjE"3600
TXT"openai-domain-verification=dv-0yK59pstdeGxkVuMwWzqCMMJ"3600
TXT"amazonses:CQ5Yd0WZkBRx7d5/PIcb84myKHF2ezJt6lvUnaA7TOs="3600

Checks

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