voedingscentrum.nl

Checked 21 October 2026, 21:26 UTC · via 8.8.8.8
!Passed with warnings
26 passed 1 warning 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/voedingscentrum.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/voedingscentrum.nl returned HTTP 429
    #3

Delegation

info

langston.ns.cloudflare.com, malavika.ns.cloudflare.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
langston.ns.cloudflare.com, malavika.ns.cloudflare.com
NS in the zone
langston.ns.cloudflare.com, malavika.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
langston.ns.cloudflare.com172.64.35.252 162.159.44.252 108.162.195.252 2606:4700:58::a29f:2cfc 2a06:98c1:50::ac40:23fc 2803:f800:50::6ca2:c3fcAS13335 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-
malavika.ns.cloudflare.com108.162.194.165 162.159.38.165 172.64.34.165 2803:f800:50::6ca2:c2a5 2606:4700:50::a29f:26a5 2a06:98c1:50::ac40:22a5AS13335 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: langston.ns.cloudflare.com, malavika.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): 12 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
langston.ns.cloudflare.com 172.64.35.252NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
langston.ns.cloudflare.com 162.159.44.252NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
langston.ns.cloudflare.com 108.162.195.252NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
langston.ns.cloudflare.com 2606:4700:58::a29f:2cfcNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
langston.ns.cloudflare.com 2a06:98c1:50::ac40:23fcNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
langston.ns.cloudflare.com 2803:f800:50::6ca2:c3fcNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
malavika.ns.cloudflare.com 108.162.194.165NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
malavika.ns.cloudflare.com 162.159.38.165NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
malavika.ns.cloudflare.com 172.64.34.165NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
malavika.ns.cloudflare.com 2803:f800:50::6ca2:c2a5NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
malavika.ns.cloudflare.com 2606:4700:50::a29f:26a5NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
malavika.ns.cloudflare.com 2a06:98c1:50::ac40:22a5NOERROR, 15 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: langston.ns.cloudflare.com: "2026.10.2"; malavika.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 2416690052 · primary langston.ns.cloudflare.com

Found

Primary (MNAME)
langston.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2416690052
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
langston.ns.cloudflare.com (172.64.35.252)2416690052
langston.ns.cloudflare.com (162.159.44.252)2416690052
langston.ns.cloudflare.com (108.162.195.252)2416690052
langston.ns.cloudflare.com (2606:4700:58::a29f:2cfc)2416690052
langston.ns.cloudflare.com (2a06:98c1:50::ac40:23fc)2416690052
langston.ns.cloudflare.com (2803:f800:50::6ca2:c3fc)2416690052
malavika.ns.cloudflare.com (108.162.194.165)2416690052
malavika.ns.cloudflare.com (162.159.38.165)2416690052
malavika.ns.cloudflare.com (172.64.34.165)2416690052
malavika.ns.cloudflare.com (2803:f800:50::6ca2:c2a5)2416690052
malavika.ns.cloudflare.com (2606:4700:50::a29f:26a5)2416690052
malavika.ns.cloudflare.com (2a06:98c1:50::ac40:22a5)2416690052

Checks

  • ✓ Serial 2416690052 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 langston.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 2416690052 is a Unix timestamp (2046-07-31 22:47 UTC).

DNSSEC

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 AFED398721A6CEA8…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 2026-10-20 20:26 UTC and expires at 2026-10-22 22:26 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

22 records at the apex

Found

Read from
172.64.35.252:53
TypeValueTTL
SOAlangston.ns.cloudflare.com. dns.cloudflare.com. 2416690052 10000 2400 604800 18001800
NSlangston.ns.cloudflare.com.86400
NSmalavika.ns.cloudflare.com.86400
A152.89.6.138600
AAAA2a09:2c40:e::138600
MX10 voedingscentrum-nl.mail.protection.outlook.com.600
TXT"90mYAdDn1J0GlfzWXBReVQLKA39JQTIx"300
TXT"DigiCert certificate@softapp-distribution.com"300
TXT"d365mktkey=3tlqlc3vsbiopilb3ngxu8ah6"300
TXT"ms-domain-verification=431b7a30-31d6-483b-a926-225e9e8fa9e0"300
TXT"v=spf1 include:_spf.exsilia.net include:_spf.eu.sparkpostmail.com include:spf.avetica.net include:spf.protection.outlook.com include:spf.afas.online a:mta.4cinfra.nl include:_spf.eu.mailgun.org ~all"300
CAA0 issue "comodoca.com"600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"600
CAA0 issue "letsencrypt.org"600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"600
CAA0 issue "sectigo.com"600
CAA0 issue "ssl.com"600
CAA0 issuewild "comodoca.com"600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"600
CAA0 issuewild "letsencrypt.org"600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"600
CAA0 issuewild "ssl.com"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, AAAA 10m, MX 10m, 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, sectigo.com, ssl.com.