Domain report: anwb.nl

Registration

info

.nl country-code

Found

TLD: .nl (country-code)
ICANN policies apply: no

Lookup error: https://rdap.sidn.nl/domain/anwb.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/anwb.nl returned HTTP 429

#3

Delegation

info

a1-184.akam.net, a2-64.akam.net, a24-66.akam.net, a3-64.akam.net, a8-64.akam.net, a9-65.akam.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: a1-184.akam.net, a2-64.akam.net, a24-66.akam.net, a3-64.akam.net, a8-64.akam.net, a9-65.akam.net
NS in the zone: a1-184.akam.net, a2-64.akam.net, a24-66.akam.net, a3-64.akam.net, a8-64.akam.net, a9-65.akam.net

Nameserver	Addresses	Network (AS)	Glue
a1-184.akam.net	193.108.91.184 2600:1401:2::b8	AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL	-
a2-64.akam.net	95.100.174.64 2600:1480:7000::40	AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL	-
a24-66.akam.net	2.16.130.66 2600:1480:9800::42	AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL	-
a3-64.akam.net	96.7.49.64 2600:1408:1c::40	AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL	-
a8-64.akam.net	2.16.40.64 2600:1403:a::40	AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL	-
a9-65.akam.net	184.85.248.65 2a02:26f0:117::41	AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL	-

Checks

✓ 6 nameservers #6

Delegated to a1-184.akam.net, a2-64.akam.net, a24-66.akam.net, a3-64.akam.net, a8-64.akam.net, a9-65.akam.net.
✓ 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 6 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 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 .net

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

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
a1-184.akam.net 193.108.91.184	NOERROR, 3 ms, authoritative	no	yes / yes	refused	41824.7
a1-184.akam.net 2600:1401:2::b8	NOERROR, 4 ms, authoritative	no	yes / yes	refused	41824.7
a2-64.akam.net 95.100.174.64	NOERROR, 3 ms, authoritative	no	yes / yes	refused	48878.31
a2-64.akam.net 2600:1480:7000::40	NOERROR, 4 ms, authoritative	no	yes / yes	refused	48878.32
a24-66.akam.net 2.16.130.66	NOERROR, 4 ms, authoritative	no	yes / yes	refused	48878.29
a24-66.akam.net 2600:1480:9800::42	NOERROR, 4 ms, authoritative	no	yes / yes	refused	48878.29
a3-64.akam.net 96.7.49.64	NOERROR, 3 ms, authoritative	no	yes / yes	refused	41824.9
a3-64.akam.net 2600:1408:1c::40	NOERROR, 4 ms, authoritative	no	yes / yes	refused	41824.10
a8-64.akam.net 2.16.40.64	NOERROR, 4 ms, authoritative	no	yes / yes	refused	48878.30
a8-64.akam.net 2600:1403:a::40	NOERROR, 4 ms, authoritative	no	yes / yes	refused	48878.29
a9-65.akam.net 184.85.248.65	NOERROR, 3 ms, authoritative	no	yes / yes	refused	41824.8
a9-65.akam.net 2a02:26f0:117::41	NOERROR, 4 ms, authoritative	no	yes / yes	refused	41824.9

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: a1-184.akam.net: "41824.7"; a2-64.akam.net: "48878.31"; a2-64.akam.net: "48878.32"; a24-66.akam.net: "48878.29"; a3-64.akam.net: "41824.9"; a3-64.akam.net: "41824.10"; a8-64.akam.net: "48878.30"; a8-64.akam.net: "48878.29"; a9-65.akam.net: "41824.8"; a9-65.akam.net: "41824.9". 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

info

serial 2017347718 · primary ns.anwb.nl

Found

Primary (MNAME): ns.anwb.nl
Contact (RNAME): postmaster.anwb.nl
Serial: 2017347718
Refresh / retry: 1200 s / 120 s
Expire: 2419200 s
Negative TTL: 900 s

Serial per nameserver

Nameserver	Serial
a1-184.akam.net (193.108.91.184)	2017347718
a1-184.akam.net (2600:1401:2::b8)	2017347718
a2-64.akam.net (95.100.174.64)	2017347718
a2-64.akam.net (2600:1480:7000::40)	2017347718
a24-66.akam.net (2.16.130.66)	2017347718
a24-66.akam.net (2600:1480:9800::42)	2017347718
a3-64.akam.net (96.7.49.64)	2017347718
a3-64.akam.net (2600:1408:1c::40)	2017347718
a8-64.akam.net (2.16.40.64)	2017347718
a8-64.akam.net (2600:1403:a::40)	2017347718
a9-65.akam.net (184.85.248.65)	2017347718
a9-65.akam.net (2a02:26f0:117::41)	2017347718

Checks

✓ Serial 2017347718 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 20m, retry 2m, expire 28d, negative TTL 15m.
i

Hidden master

The primary nameserver ns.anwb.nl is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.

#24
✓ Contact postmaster@anwb.nl #25

The SOA RNAME postmaster.anwb.nl means postmaster@anwb.nl.
✓ Timestamp serial #26

The serial 2017347718 is a Unix timestamp (2033-12-04 22:21 UTC).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 10 iterations, 6-byte salt
Signatures valid until: 25 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
43156	RSASHA256 (8)	SHA256 2597F47897706C52…	NO
48394	RSASHA256 (8)	SHA256 CDC9580B131F4114…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
48394	KSK (257)	RSASHA256 (8)
58105	ZSK (256)	RSASHA256 (8)
30949	ZSK (256)	RSASHA256 (8)

Checks

✓ Signed and validated #27

The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
i

Unused DS records

These DS records match no key in the zone: key tag 43156 (SHA256). That is normal during a key rollover; otherwise remove them.

#28
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Short-lived signatures (online signing) #30

Signatures are valid for 96h0m0s and created on demand; the current one was made at 2026-10-21 05:28 UTC and expires at 2026-10-25 05:32 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 10 iterations and a 6-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

pass

38 records at the apex

Found

Read from: 193.108.91.184:53

Type	Value	TTL
SOA	ns.anwb.nl. postmaster.anwb.nl. 2017347718 1200 120 2419200 900	7200
NS	a24-66.akam.net.	7200
NS	a1-184.akam.net.	7200
NS	a3-64.akam.net.	7200
NS	a8-64.akam.net.	7200
NS	a9-65.akam.net.	7200
NS	a2-64.akam.net.	7200
A	89.106.200.151	300
MX	0 anwb-nl.mail.protection.outlook.com.	3600
MX	10 anwb-nl.mail.protection.outlook.com.	3600
TXT	"google-site-verification=TPe2BBQy6__F1Xwwa5wWGPGxiriatFT2hSBp8vliu34"	900
TXT	"mandrill_verify.1ax-WHtuBD-5ZpnpLYO98A"	900
TXT	"google-site-verification=P6tuMJ7oGuwoZRKPYJ3JFvxQmohq3eTCuB9aJwh1Jn4"	900
TXT	"facebook-domain-verification=uh26jr568laomq7ch6pumqszkfvdic"	900
TXT	"facebook-domain-verification=80a3ath0jwilw0zx0y0zf05z5img14"	900
TXT	"rm_verify=45169f755c"	900
TXT	"google-site-verification=MzF7E5ouM_ANEdTFp5_5_b5Mho2kB6yHWs_R4p5nSfs"	900
TXT	"iASIhdQ+rr35SugTSn+7QoCLwOIogYblFpj28REOHvC4kXtHbdOMGjV8mKzKKmaWN24PlSQhwKE+vW8cynfwXA=="	900
TXT	"atlassian-domain-verification=Q7tVCNMXlcM4wBk6WNzY2SpKZasdJY5HyzYw5MPPCFnjz4zpXVxBrFeZaeJa72Hd"	900
TXT	"proxy-ssl.webflow.com"	900
TXT	"google-site-verification=cGIxpJGAUS0Nxy6klTKCdsiiHR3Ex8GgJnXMfW0f0Ac"	900
TXT	"vmware-cloud-verification-2158fe4d-0856-4b14-9deb-abe36a3fa752"	900
TXT	"google-site-verification=z3HRMigwFOYH3Ez58I1i7Y8QabYcmcjmXSwT3AWcEWk"	900
TXT	"jamf-site-verification=zmMKIZp-O0sLE9rdodRU_g"	900
TXT	"v=spf1 ip4:213.214.103.13 ip4:178.128.249.130 ip4:80.84.235.70 ip4:167.89.61.143 ip4:185.42.69.37 ip4:185.42.69.156 ip4:40.113.174.207 ip4:172.199.105.223 " "include:_spf.ugt.keylanehosting.com include:_senderspf.copernica.com include:mail.zendesk.com include:spf.afas.online include:spf.protection.outlook.com -all"	900
TXT	"For" "verification" "Trustpilot"	900
TXT	"v=NTA7516-1;startdate=2022-08;enddate=2032-08;provider=secumailer"	900
CAA	0 issue "amazon.com"	7200
CAA	0 iodef "mailto:ictsecurity@anwb.nl"	7200
CAA	0 issuewild "sectigo.com"	7200
CAA	0 issue "globalsign.com"	7200
CAA	0 issue "amazontrust.com"	7200
CAA	0 issue "awstrust.com"	7200
CAA	0 issue "pki.goog"	7200
CAA	0 issue "letsencrypt.org"	7200
CAA	0 issue "amazonaws.com"	7200
CAA	0 issue "digicert.com"	7200
CAA	0 issue "sectigo.com"	7200

Checks

✓ TTLs within range #32

TTLs: A 5m, MX 1h, NS 2h. The NS TTL at the parent is 1h and in the zone 2h; 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: amazon.com, sectigo.com, globalsign.com, amazontrust.com, awstrust.com, pki.goog, letsencrypt.org, amazonaws.com, digicert.com.