avans.nl

Checked 21 October 2026, 20:45 UTC · via 8.8.8.8
!Passed with warnings
29 passed 1 warning 0 failed 5 info

Registration

info

.nl country-code · Stichting Avans

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
Stichting Avans
Registered
24 February 2003
Last changed
9 July 2026
Status
active
Registry nameservers
ns1-35.azure-dns.com, ns2-35.azure-dns.net, ns3-35.azure-dns.org, ns4-35.azure-dns.info
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

ns1-35.azure-dns.com, ns2-35.azure-dns.net, ns3-35.azure-dns.org, ns4-35.azure-dns.info

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1-35.azure-dns.com, ns2-35.azure-dns.net, ns3-35.azure-dns.org, ns4-35.azure-dns.info
NS in the zone
ns1-35.azure-dns.com, ns2-35.azure-dns.net, ns3-35.azure-dns.org, ns4-35.azure-dns.info
NameserverAddressesNetwork (AS)Glue
ns1-35.azure-dns.com150.171.10.35 2603:1061:0:10::23AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns2-35.azure-dns.net150.171.16.35 2620:1ec:8ec:10::23AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns3-35.azure-dns.org13.107.222.35 2a01:111:4000:10::23AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-
ns4-35.azure-dns.info13.107.206.35 2620:1ec:bda:10::23AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-35.azure-dns.com, ns2-35.azure-dns.net, ns3-35.azure-dns.org, ns4-35.azure-dns.info.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation, US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .info, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-35.azure-dns.com 150.171.10.35NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1-35.azure-dns.com 2603:1061:0:10::23NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns2-35.azure-dns.net 150.171.16.35NOERROR, 4 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns2-35.azure-dns.net 2620:1ec:8ec:10::23NOERROR, 8 ms, authoritativenoyes / yesrefused-
ns3-35.azure-dns.org 13.107.222.35NOERROR, 6 ms, authoritativenoyes / yesrefused-
ns3-35.azure-dns.org 2a01:111:4000:10::23NOERROR, 6 ms, authoritativenoyes / yesrefused-
ns4-35.azure-dns.info 13.107.206.35NOERROR, 8 ms, authoritativenoyes / yesrefusedKnot DNS 3.1.2.1770717641.d6b376aff
ns4-35.azure-dns.info 2620:1ec:bda:10::23NOERROR, 8 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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: ns2-35.azure-dns.net: "Knot DNS 3.1.2.1770717641.d6b376aff"; ns4-35.azure-dns.info: "Knot DNS 3.1.2.1770717641.d6b376aff". 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 1 · primary ns1-35.azure-dns.com

Found

Primary (MNAME)
ns1-35.azure-dns.com
Contact (RNAME)
azuredns-hostmaster.microsoft.com
Serial
1
Refresh / retry
3600 s / 300 s
Expire
2419200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1-35.azure-dns.com (150.171.10.35)1
ns1-35.azure-dns.com (2603:1061:0:10::23)1
ns2-35.azure-dns.net (150.171.16.35)1
ns2-35.azure-dns.net (2620:1ec:8ec:10::23)1
ns3-35.azure-dns.org (13.107.222.35)1
ns3-35.azure-dns.org (2a01:111:4000:10::23)1
ns4-35.azure-dns.info (13.107.206.35)1
ns4-35.azure-dns.info (2620:1ec:bda:10::23)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 28d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-35.azure-dns.com is one of the listed nameservers.
  • ✓ Contact azuredns-hostmaster@microsoft.com #25
    The SOA RNAME azuredns-hostmaster.microsoft.com means azuredns-hostmaster@microsoft.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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
16981ECDSAP256SHA256 (13)SHA256 65630B3E1A979082…yes

DNSKEY in the zone

Key tagRoleAlgorithm
16981KSK (257)ECDSAP256SHA256 (13)
23481ZSK (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 16981 (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 19:45 UTC and expires at 2026-10-22 21:45 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

38 records at the apex

Found

Read from
150.171.10.35:53
TypeValueTTL
SOAns1-35.azure-dns.com. azuredns-hostmaster.microsoft.com. 1 3600 300 2419200 3003600
NSns1-35.azure-dns.com.172800
NSns2-35.azure-dns.net.172800
NSns3-35.azure-dns.org.172800
NSns4-35.azure-dns.info.172800
A192.87.130.27300
AAAA2001:610:1a0:1530:192:87:130:27300
MX0 avans-nl.e-v1.mx.microsoft.3600
TXT"dgM2y7bo0y5/tJFLRgt4nOxMgiJyLuQ7AbtlAnHSxStezgOinzIQC4Z3yC9NRQoOeyl/aQC0PUzpb8jfToRUsQ=="3600
TXT"google-site-verification=mGkvNvCgcl5-Edy2bQQ20s3CQ_usWAgOizhE1FP4n_c"3600
TXT"cFNGWi2OEqYi4Bl/aM8zWCH3GT68Tkqk9DemZZDMNxjhbI8C/95OQ9X7VOKu+UnfLWhOZacVILdnJR1WzYwdUg=="3600
TXT"facebook-domain-verification=3kcd9gtrhivqm4ywfd6txtzrokfzlr"3600
TXT"adobe-idp-site-verification=b7be0596b04b22c67415ce7f210946cdffd22fae73fcb3be231fc0effa5ce58d"3600
TXT"MS=ms81550549"3600
TXT"google-site-verification=FdF3euszYsInNdl7nMRKmVwbsc8aB-aOi4tQxjQilaQ"3600
TXT"atlassian-domain-verification=XNFQ6FLgwCCAO4lYEmlglFsW7Gig2AUU4li/cBeKxIiuAcak5SmPxiCEKH8wul0Q"3600
TXT"Avans University of Applied Sciences"3600
TXT"msfpkey=4rbk3h1zqqr8hb0hyoilz1og3"3600
TXT"google-site-verification=ttCiHz-SNCV_DcuCHtH72vxv0l3XhvG_23DfnaPLC1A"3600
TXT"autodesk-domain-verification=uJYkulXkOa93g2s7XRQH"3600
TXT"4539c8296ecbf9b6d0a47777fdb8ac388891707b478f4bbfcc"3600
TXT"lhbm50nmu6omb156etri5rgn96"3600
TXT"sh7u3gfui113hmhq74b2h0nim1"3600
TXT"kstr5l4oqcar5rq80vmqvd2nir"3600
TXT"qhodgq83829dgb75jd9or442u6"3600
TXT"v=spf1 include:spf.protection.outlook.com include:_senderspf.copernica.com ip4:178.22.56.140 ip4:37.97.186.233 ip4:81.95.112.155 ip4:87.233.133.34 ip6:2a00:1e28:3:1917::1 ip4:62.204.92.128/26 ip4:82.204.37.98 ip4:83.98.197.0" "/24 ip4:5.79.89.118 include:spf.tribecrm.nl ip4:5.79.114.227 ip4:5.79.114.229 include:spf.topdesk.net -all"3600
TXT"HARICA-5IS4c4TjdguIYjQeH0o"3600
TXT"onetrust-domain-verification=eed6b4bcbea946029ca3696731bfadaf"3600
CAA0 issue "digicert.com"60
CAA0 issue "sectigo.com"60
CAA0 iodef "mailto:hostmaster@avans.nl"60
CAA0 issue "letsencrypt.org"60
CAA0 issue "ssl.com"60
CAA0 issue "pki.goog"60
CAA0 issue "godaddy.com"60
CAA0 issue "amazon.com"60
CAA0 issue "zerossl.com"60
CAA0 issue "harica.gr"60

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 1h, NS 2d. The NS TTL at the parent is 1h and in the zone 2d; 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: digicert.com, sectigo.com, letsencrypt.org, ssl.com, pki.goog, godaddy.com, amazon.com, zerossl.com, harica.gr.