jaap.nl

Checked 22 October 2026, 14:00 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 7 info

Registration

info

.nl country-code · Registrar.eu

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Registrar.eu
Registered
14 September 1999
Last changed
11 July 2025
Status
active
Registry nameservers
decker.ns.cloudflare.com, sasha.ns.cloudflare.com
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

info

decker.ns.cloudflare.com, sasha.ns.cloudflare.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
decker.ns.cloudflare.com, sasha.ns.cloudflare.com
NS in the zone
decker.ns.cloudflare.com, sasha.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
decker.ns.cloudflare.com172.64.35.155 162.159.44.155 108.162.195.155 2a06:98c1:50::ac40:239b 2606:4700:58::a29f:2c9b 2803:f800:50::6ca2:c39bAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US --
sasha.ns.cloudflare.com108.162.194.69 172.64.34.69 162.159.38.69 2803:f800:50::6ca2:c245 2a06:98c1:50::ac40:2245 2606:4700:50::a29f:2645AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: decker.ns.cloudflare.com, sasha.ns.cloudflare.com.
    #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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 11 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 .com
    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

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
decker.ns.cloudflare.com 172.64.35.155NOERROR, 21 ms, authoritativenoyes / yesrefused2026.10.2
decker.ns.cloudflare.com 162.159.44.155NOERROR, 33 ms, authoritativenoyes / yesrefused2026.10.2
decker.ns.cloudflare.com 108.162.195.155NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
decker.ns.cloudflare.com 2a06:98c1:50::ac40:239bNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
decker.ns.cloudflare.com 2606:4700:58::a29f:2c9bNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
decker.ns.cloudflare.com 2803:f800:50::6ca2:c39bNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
sasha.ns.cloudflare.com 108.162.194.69NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
sasha.ns.cloudflare.com 172.64.34.69NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
sasha.ns.cloudflare.com 162.159.38.69NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
sasha.ns.cloudflare.com 2803:f800:50::6ca2:c245NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
sasha.ns.cloudflare.com 2a06:98c1:50::ac40:2245NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
sasha.ns.cloudflare.com 2606:4700:50::a29f:2645NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: decker.ns.cloudflare.com: "2026.10.2"; sasha.ns.cloudflare.com: "2026.10.2". 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 2417842128 · primary decker.ns.cloudflare.com

Found

Primary (MNAME)
decker.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417842128
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
decker.ns.cloudflare.com (172.64.35.155)2417842128
decker.ns.cloudflare.com (162.159.44.155)2417842128
decker.ns.cloudflare.com (108.162.195.155)2417842128
decker.ns.cloudflare.com (2a06:98c1:50::ac40:239b)2417842128
decker.ns.cloudflare.com (2606:4700:58::a29f:2c9b)2417842128
decker.ns.cloudflare.com (2803:f800:50::6ca2:c39b)2417842128
sasha.ns.cloudflare.com (108.162.194.69)2417842128
sasha.ns.cloudflare.com (172.64.34.69)2417842128
sasha.ns.cloudflare.com (162.159.38.69)2417842128
sasha.ns.cloudflare.com (2803:f800:50::6ca2:c245)2417842128
sasha.ns.cloudflare.com (2a06:98c1:50::ac40:2245)2417842128
sasha.ns.cloudflare.com (2606:4700:50::a29f:2645)2417842128

Checks

  • ✓ Serial 2417842128 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver decker.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417842128 is a Unix timestamp (2046-08-14 06:48 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 FB8E80A7CE38E5C5…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)ECDSAP256SHA256 (13)

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 2371 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-21 13:00 UTC and expires at 2026-10-23 15:00 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

20 records at the apex

Found

Read from
172.64.35.155:53
TypeValueTTL
SOAdecker.ns.cloudflare.com. dns.cloudflare.com. 2417842128 10000 2400 604800 18001800
NSdecker.ns.cloudflare.com.86400
NSsasha.ns.cloudflare.com.86400
MX0 jaap-nl.mail.protection.outlook.com.300
TXT"google-site-verification=15SZMa-l2OOo5MtCC8_t8fkoQe6EbFxUkxWnwoz1TsI"300
TXT"google-site-verification=AOlQb3ethdqqy_bh3YOp-r76S_oeCDDZ-TBgLbLyRNc"300
TXT"google-site-verification=sN3FA7zsWpzINkVkcyVyncpcKm7sPgeB45hvW9QDogg"300
TXT"ms72991534"300
TXT"v=spf1 include:spf.flexmail.eu include:mail.zendesk.com ip4:31.24.113.0/24 include:spf.protection.outlook.com -all"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "ssl.com"300
CAA0 issuewild "comodo.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "ssl.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: MX 5m, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com, comodo.com.