spaarnegasthuis.nl

Checked 22 October 2026, 16:10 UTC · via 8.8.8.8
!Passed with warnings
24 passed 1 warning 0 failed 7 info

Registration

info

.nl country-code

Found

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

Delegation

info

adel.ns.cloudflare.com, guy.ns.cloudflare.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
adel.ns.cloudflare.com, guy.ns.cloudflare.com
NS in the zone
adel.ns.cloudflare.com, guy.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
adel.ns.cloudflare.com172.64.32.55 173.245.58.55 108.162.192.55 2a06:98c1:50::ac40:2037 2606:4700:50::adf5:3a37 2803:f800:50::6ca2:c037AS13335 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-
guy.ns.cloudflare.com172.64.33.173 173.245.59.173 108.162.193.173 2606:4700:58::adf5:3bad 2a06:98c1:50::ac40:21ad 2803:f800:50::6ca2:c1adAS13335 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: adel.ns.cloudflare.com, guy.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
adel.ns.cloudflare.com 172.64.32.55NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adel.ns.cloudflare.com 173.245.58.55NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
adel.ns.cloudflare.com 108.162.192.55NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adel.ns.cloudflare.com 2a06:98c1:50::ac40:2037NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adel.ns.cloudflare.com 2606:4700:50::adf5:3a37NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
adel.ns.cloudflare.com 2803:f800:50::6ca2:c037NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
guy.ns.cloudflare.com 172.64.33.173NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
guy.ns.cloudflare.com 173.245.59.173NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
guy.ns.cloudflare.com 108.162.193.173NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
guy.ns.cloudflare.com 2606:4700:58::adf5:3badNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
guy.ns.cloudflare.com 2a06:98c1:50::ac40:21adNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
guy.ns.cloudflare.com 2803:f800:50::6ca2:c1adNOERROR, 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: adel.ns.cloudflare.com: "2026.10.2"; guy.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 2417540131 · primary adel.ns.cloudflare.com

Found

Primary (MNAME)
adel.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417540131
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
adel.ns.cloudflare.com (172.64.32.55)2417540131
adel.ns.cloudflare.com (173.245.58.55)2417540131
adel.ns.cloudflare.com (108.162.192.55)2417540131
adel.ns.cloudflare.com (2a06:98c1:50::ac40:2037)2417540131
adel.ns.cloudflare.com (2606:4700:50::adf5:3a37)2417540131
adel.ns.cloudflare.com (2803:f800:50::6ca2:c037)2417540131
guy.ns.cloudflare.com (172.64.33.173)2417540131
guy.ns.cloudflare.com (173.245.59.173)2417540131
guy.ns.cloudflare.com (108.162.193.173)2417540131
guy.ns.cloudflare.com (2606:4700:58::adf5:3bad)2417540131
guy.ns.cloudflare.com (2a06:98c1:50::ac40:21ad)2417540131
guy.ns.cloudflare.com (2803:f800:50::6ca2:c1ad)2417540131

Checks

  • ✓ Serial 2417540131 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 adel.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 2417540131 is a Unix timestamp (2046-08-10 18:55 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 51F181017AD1E84A…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 15:10 UTC and expires at 2026-10-23 17:10 UTC.

Records

info

20 records at the apex

Found

Read from
172.64.32.55:53
TypeValueTTL
SOAadel.ns.cloudflare.com. dns.cloudflare.com. 2417540131 10000 2400 604800 18001800
NSadel.ns.cloudflare.com.86400
NSguy.ns.cloudflare.com.86400
A104.21.13.6300
A172.67.154.20300
AAAA2606:4700:3034::ac43:9a14300
AAAA2606:4700:3030::6815:d06300
MX0 spaarnegasthuis-nl.mail.protection.outlook.com.300
TXT"MS=3BE81E471112F7D8894DF50CCC2720F58155FB6A"60
TXT"MS=ms10954818"60
TXT"MS=ms37147199"60
TXT"MS=ms57244009"60
TXT"QuoVadis=4d6a1ff8-5aef-48e0-8be7-2b298b19ed51"60
TXT"atlassian-domain-verification=S0gA2PAeaGJiJLaSyGbEbc7afTx4QHZ3VgH4836Erk8GBLE6nFfXnSjChZFvnaNO"60
TXT"cisco-ci-domain-verification=7f446f0e03986d5e65be994c63dc21c712860a6a235004fc670de3c15557f79d"60
TXT"facebook-domain-verification=m6gufiqk4nrs087t4m2246xh7ucntf"60
TXT"g2E9IV+8fsEW9BwklbWIZtB3foMM9w/R0XAJ1cHrByA="60
TXT"google-site-verification=FzdhpqVA_Av9K1TxaPZIFGRdXWXLb3-SJfMVffITDSI"60
TXT"tmes=f2a34ff7362dbeb79b69b9d5a9c47571"60
TXT"v=spf1 include:spf.flowmailer.net include:_spf.zivver.com ip4:217.166.76.180 include:spf.mdl-solutions.nl ip4:145.63.0.72 include:spf.afas.online include:_spf.yellowyard.nl include:spf.protection.outlook.com ip4:145.63.0.4 ip4:194.88.230.0/23 -all"60

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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