nlactief.nl

Checked 22 October 2026, 14:50 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/nlactief.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/nlactief.nl returned HTTP 429
    #3

Delegation

info

docks01.rzone.de, shades16.rzone.de

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
docks01.rzone.de, shades16.rzone.de
NS in the zone
docks01.rzone.de, shades16.rzone.de
NameserverAddressesNetwork (AS)Glue
docks01.rzone.de217.160.80.128 2001:8d8:fe:53:5747:2a74:d:1AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE-
shades16.rzone.de185.132.34.143 2607:f1c0:fe:53:185:132:34:143AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: docks01.rzone.de, shades16.rzone.de.
    #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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 2 addresses; AS8560 (IONOS-AS - IONOS SE, DE): 2 addresses.
  • i
    All nameserver names under .de
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
docks01.rzone.de 217.160.80.128NOERROR, 11 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
docks01.rzone.de 2001:8d8:fe:53:5747:2a74:d:1NOERROR, 10 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
shades16.rzone.de 185.132.34.143NOERROR, 5 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/
shades16.rzone.de 2607:f1c0:fe:53:185:132:34:143NOERROR, 4 ms, authoritativenoyes / yesrefusedServed by PowerDNS - https://www.powerdns.com/

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: docks01.rzone.de: "Served by PowerDNS - https://www.powerdns.com/"; shades16.rzone.de: "Served by PowerDNS - https://www.powerdns.com/".
    #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 2020052085 · primary shades16.rzone.de

Found

Primary (MNAME)
shades16.rzone.de
Contact (RNAME)
hostmaster.strato-rz.de
Serial
2020052085
Refresh / retry
86400 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
docks01.rzone.de (217.160.80.128)2020052085
docks01.rzone.de (2001:8d8:fe:53:5747:2a74:d:1)2020052085
shades16.rzone.de (185.132.34.143)2020052085
shades16.rzone.de (2607:f1c0:fe:53:185:132:34:143)2020052085

Checks

  • ✓ Serial 2020052085 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver shades16.rzone.de is one of the listed nameservers.
  • ✓ Contact hostmaster@strato-rz.de #25
    The SOA RNAME hostmaster.strato-rz.de means hostmaster@strato-rz.de.
  • ✓ Date-based serial #26
    The serial 2020052085 follows the YYYYMMDDnn convention (2020-05-20).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC3
NSEC3
21 iterations, 24-byte salt
Signatures valid until
11 January 2027

DS at the parent

Key tagAlgorithmDigestMatches a key
62704RSASHA256 (8)SHA256 762F9761CFC48EF0…yes

DNSKEY in the zone

Key tagRoleAlgorithm
23058ZSK (256)RSASHA256 (8)
62704KSK (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 62704 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2027-01-11 #30
    The earliest DNSKEY/SOA signature expires at 2027-01-11 13:40 UTC.
  • !
    NSEC3 with extra iterations or salt
    NSEC3 uses 21 iterations and a 24-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.
    #31

Records

warn

8 records at the apex

Found

Read from
217.160.80.128:53
TypeValueTTL
SOAshades16.rzone.de. hostmaster.strato-rz.de. 2020052085 86400 7200 604800 300150
NSdocks01.rzone.de.150
NSshades16.rzone.de.150
A87.233.83.35150
AAAA2001:9a8:0:86:87:233:83:35150
MX10 nlactief-nl.mail.protection.outlook.com.150
TXT"brevo-code:babc96ee83b5a6e1ca7f70a1f2dcbc37"150
TXT"v=spf1 mx include:spf.protection.outlook.com ip4:88.214.28.217 include:spf_servers.yard.nl include:spf_cluster.yard.nl include:spf_specials.yard.nl ip4:149.210.237.75 ip6:2a09:8b00:101:9::10 include:spf.eprov.nl include:spf.formdesk.com -all"150

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (2m30s), AAAA (2m30s), MX (2m30s), NS (2m30s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 2m30s; resolvers may use either.
    #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