ah.nl

Checked 21 October 2026, 20:45 UTC · via 8.8.8.8
!Passed with warnings
21 passed 3 warnings 0 failed 5 info

Registration

info

.nl country-code

Found

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

Delegation

info

a1-249.akam.net, a14-64.akam.net, a6-65.akam.net, a7-64.akam.net, a8-65.akam.net, a9-67.akam.net

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
a1-249.akam.net, a14-64.akam.net, a6-65.akam.net, a7-64.akam.net, a8-65.akam.net, a9-67.akam.net
NS in the zone
a1-249.akam.net, a14-64.akam.net, a6-65.akam.net, a7-64.akam.net, a8-65.akam.net, a9-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-249.akam.net193.108.91.249 2600:1401:2::f9AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a14-64.akam.net184.26.161.64 2600:1480:1800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a6-65.akam.net23.211.133.65 2600:1401:1::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-64.akam.net23.61.199.64 2600:1406:32::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a8-65.akam.net2.16.40.65 2600:1403:a::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-67.akam.net184.85.248.67 2a02:26f0:117::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-249.akam.net, a14-64.akam.net, a6-65.akam.net, a7-64.akam.net, a8-65.akam.net, a9-67.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.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses.
  • 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

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-249.akam.net 193.108.91.249NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a1-249.akam.net 2600:1401:2::f9NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a14-64.akam.net 184.26.161.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.26
a14-64.akam.net 2600:1480:1800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a6-65.akam.net 23.211.133.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.27
a6-65.akam.net 2600:1401:1::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a7-64.akam.net 23.61.199.64NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
a7-64.akam.net 2600:1406:32::40NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a8-65.akam.net 2.16.40.65NOERROR, 3 ms, authoritativenoyes / yesrefused48878.29
a8-65.akam.net 2600:1403:a::41NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a9-67.akam.net 184.85.248.67NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a9-67.akam.net 2a02:26f0:117::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8

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: a1-249.akam.net: "41824.11"; a1-249.akam.net: "41824.9"; a14-64.akam.net: "48878.26"; a14-64.akam.net: "48878.32"; a6-65.akam.net: "48878.27"; a6-65.akam.net: "48878.29"; a7-64.akam.net: "41824.5"; a7-64.akam.net: "41824.6"; a8-65.akam.net: "48878.29"; a8-65.akam.net: "48878.27"; a9-67.akam.net: "41824.6"; a9-67.akam.net: "41824.8". 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 2008067136 · primary ns25.ahold.nl

Found

Primary (MNAME)
ns25.ahold.nl
Contact (RNAME)
hostmaster.ahold.nl
Serial
2008067136
Refresh / retry
14400 s / 3600 s
Expire
2419200 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
a1-249.akam.net (193.108.91.249)2008067136
a1-249.akam.net (2600:1401:2::f9)2008067136
a14-64.akam.net (184.26.161.64)2008067136
a14-64.akam.net (2600:1480:1800::40)2008067136
a6-65.akam.net (23.211.133.65)2008067136
a6-65.akam.net (2600:1401:1::41)2008067136
a7-64.akam.net (23.61.199.64)2008067136
a7-64.akam.net (2600:1406:32::40)2008067136
a8-65.akam.net (2.16.40.65)2008067136
a8-65.akam.net (2600:1403:a::41)2008067136
a9-67.akam.net (184.85.248.67)2008067136
a9-67.akam.net (2a02:26f0:117::43)2008067136

Checks

  • ✓ Serial 2008067136 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 28d, negative TTL 15m.
  • i
    Hidden master
    The primary nameserver ns25.ahold.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 hostmaster@ahold.nl #25
    The SOA RNAME hostmaster.ahold.nl means hostmaster@ahold.nl.
  • ✓ Timestamp serial #26
    The serial 2008067136 is a Unix timestamp (2033-08-19 12:25 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27

Records

warn

26 records at the apex

Found

Read from
193.108.91.249:53
TypeValueTTL
SOAns25.ahold.nl. hostmaster.ahold.nl. 2008067136 14400 3600 2419200 900300
NSa7-64.akam.net.300
NSa9-67.akam.net.300
NSa14-64.akam.net.300
NSa8-65.akam.net.300
NSa1-249.akam.net.300
NSa6-65.akam.net.300
A2.16.204.3120
A2.16.204.820
MX10 ah-nl.mail.protection.outlook.com.300
TXT"_zna9os0x7mwwix09uiclz31md52euf6"300
TXT"mongodb-site-verification=mRGyiiCbKtOFB4hTcvt780JzXKNZW2PN"300
TXT"google-site-verification=RuZLXagupabN1jkH_Szne5gCiwcJRyjSJTa763eNwkM"300
TXT"docusign=7c936727-559f-47df-b5bf-00051dda9458"300
TXT"atlassian-domain-verification=/ZrBwaKNKauU8CQx6SaOCM8ULGtxEcNjcL4FEJlbZhavmF2fjTmHrgX/UPRKCM0T"300
TXT"facebook-domain-verification=jxk4mu3rwd7ka1wnhmxudvtdoatt96"300
TXT"adobe-idp-site-verification=31b4e7869e2cd912e3f02bba03305ac0b8b056d17a4779bd3aefa4b117db5fc8"300
TXT"MS=ms49548478"300
TXT"v=spf1 include:_spf.ah.nl include:spf.protection.outlook.com include:eu.mailgun.org include:sendgrid.net include:spf.mailjet.com include:nw010.com include:_spf-dc57.sapsf.eu -all"300
TXT"apple-domain-verification=krHbxuyr1gHwKStA"300
TXT"liveramp-site-verification=C46VO0voWNGlgPezanL-NYLaFvz_Mz4eK5oVnmrjOZ4"300
TXT"google-site-verification=lWxAQXPFiYqWSlcnL8MZF_ijFrHsQS93acOHEJ3tT9I"300
TXT"docker-verification=f3bda6e7-685d-4fa5-aedc-6f9b1215cbe9"300
TXT"segment-site-verification=RdaxQI9poxfh6sIRSXJsYJPIqfOyoN7h"300
TXT"airtable-verification=597bed7a8bd61012355d44fb43496161"300
TXT"docusign=d64bbad0-a329-416b-a91b-994d4921f69a"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 5m; 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