schiedam.nl

Checked 22 October 2026, 15:50 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 4 info

Registration

info

.nl country-code

Found

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

Delegation

info

ns1.mvsrbd.net, ns1.rbdnet.nl, ns2.mvsrbd.net, ns2.rbdnet.nl

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.mvsrbd.net, ns1.rbdnet.nl, ns2.mvsrbd.net, ns2.rbdnet.nl
NS in the zone
ns1.mvsrbd.net, ns1.rbdnet.nl, ns2.mvsrbd.net, ns2.rbdnet.nl
NameserverAddressesNetwork (AS)Glue
ns1.mvsrbd.net46.17.9.3 2a02:2870:1:100:46:17:9:3AS39591 GLOBAL-E - Previder B.V., NL AS39591 GLOBAL-E - Previder B.V., NL-
ns1.rbdnet.nl194.26.120.1AS209721 gem-schiedam - Gemeente Schiedam, NL194.26.120.1
ns2.mvsrbd.net46.17.15.250 2a02:2870:c002:1::11AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL AS60781 LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL-
ns2.rbdnet.nl194.26.120.2AS209721 gem-schiedam - Gemeente Schiedam, NL194.26.120.2

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.mvsrbd.net, ns1.rbdnet.nl, ns2.mvsrbd.net, ns2.rbdnet.nl.
  • ✓ 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 3 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS209721 (gem-schiedam - Gemeente Schiedam, NL): 2 addresses; AS39591 (GLOBAL-E - Previder B.V., NL): 2 addresses; AS60781 (LEASEWEB-NL-AMS-01 - LeaseWeb Netherlands B.V., NL): 2 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .net, .nl.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns1.rbdnet.nl, ns2.rbdnet.nl.
    #13

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.mvsrbd.net 46.17.9.3NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns1.mvsrbd.net 2a02:2870:1:100:46:17:9:3NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns1.rbdnet.nl 194.26.120.1NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns2.mvsrbd.net 46.17.15.250NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2.mvsrbd.net 2a02:2870:c002:1::11NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2.rbdnet.nl 194.26.120.2NOERROR, 20 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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

warn

serial 2017120448 · primary ns1.rbdnet.nl

Found

Primary (MNAME)
ns1.rbdnet.nl
Contact (RNAME)
postmaster.rbdnet.nl
Serial
2017120448
Refresh / retry
10800 s / 1080 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.mvsrbd.net (46.17.9.3)2017120448
ns1.mvsrbd.net (2a02:2870:1:100:46:17:9:3)2017120448
ns1.rbdnet.nl (194.26.120.1)2017120450
ns2.mvsrbd.net (46.17.15.250)2017120447
ns2.mvsrbd.net (2a02:2870:c002:1::11)2017120447
ns2.rbdnet.nl (194.26.120.2)2017120450

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2017120447 on ns2.mvsrbd.net (46.17.15.250), ns2.mvsrbd.net (2a02:2870:c002:1::11); 2017120448 on ns1.mvsrbd.net (46.17.9.3), ns1.mvsrbd.net (2a02:2870:1:100:46:17:9:3); 2017120450 on ns1.rbdnet.nl (194.26.120.1), ns2.rbdnet.nl (194.26.120.2). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 18m, expire 28d, negative TTL 15m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.rbdnet.nl is one of the listed nameservers.
  • ✓ Contact postmaster@rbdnet.nl #25
    The SOA RNAME postmaster.rbdnet.nl means postmaster@rbdnet.nl.
  • ✓ Date-based serial #26
    The serial 2017120448 follows the YYYYMMDDnn convention (2017-12-04).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
26 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
25369RSASHA256 (8)SHA256 61B1CC86C39D6CA2…yes

DNSKEY in the zone

Key tagRoleAlgorithm
38326ZSK (256)RSASHA256 (8)
21156ZSK (256)RSASHA256 (8)
25369KSK (257)RSASHA256 (8)

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 25369 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 97h0m0s and created on demand; the current one was made at 2026-10-22 12:02 UTC and expires at 2026-10-26 12:40 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

pass

27 records at the apex

Found

Read from
46.17.9.3:53
TypeValueTTL
SOAns1.rbdnet.nl. postmaster.rbdnet.nl. 2017120448 10800 1080 2419200 900300
NSns1.rbdnet.nl.300
NSns1.mvsrbd.net.300
NSns2.rbdnet.nl.300
NSns2.mvsrbd.net.300
A46.17.9.132300
AAAA2a02:2870:1:132:46:17:9:132300
MX10 mail.rbdnet.nl.86400
MX20 fallback.server01.slaveserver.net.86400
TXT"_xt8a06lppgrwj9s6fnkl1ju016mmq7k"300
TXT"a38009d9395e4ac479aa4fa751422043e1d17941c813566b6e37f0f3d97b35bc"300
TXT"c3134b7ef8500435b9806a6105c0b690cf4ff1bfd3a979c840fb62433d24d543"300
TXT"ZA=AAGZ/Ybm7FHscPu0JOfn2w=="300
TXT"_bmfzspng5p7273dbxg4k44qlhfapcit"300
TXT"DomainVerification=KZV607RY4J2FLHBW9BKLZW99CNV606OI9IIR1LIL4METPREFQ1QB1ZJIK4LBLN90"300
TXT"v=spf1 mx ip4:194.26.120.5 ip4:46.17.9.132 include:_spf.zivver.com include:_spf.services.centric.eu include:spf.protection.outlook.com -all"300
TXT"_708joketxu175kuv048x2tjql1ccsm1"300
TXT"bw=Z1xMq053cPcpKo3RUikHnO2AXNwtnyqzGO2FCRBy757Y"300
TXT"0uN6O5ctnstUCZcxko3LarbnV4ynsRyENq4U91wLZ9o="300
TXT"_6tb0x37fs81iywah2spox90db2cid6w"300
TXT"_mil1ca6m2o0a194de6lkzqbrkilvn67"300
CAA0 issue "letsencrypt.org"300
CAA0 issuewild "globalsign.com"300
CAA0 issue "KPN.COM"300
CAA0 issue "globalsign.com"300
CAA0 issue "digicert.com"300
CAA0 issuewild "digicert.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 1d, NS 5m. The NS TTL at the parent is 1h and in the zone 5m; 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: letsencrypt.org, globalsign.com, KPN.COM, digicert.com.