nieuweinstituut.nl

Checked 21 October 2026, 21:23 UTC · via 8.8.8.8
iAll checks passed
29 passed 0 warnings 0 failed 6 info

Registration

info

.nl country-code · 1API Gmbh

Found

TLD
.nl (country-code)
ICANN policies apply
no
Registrar
1API Gmbh
Registered
22 May 2012
Last changed
9 September 2026
Status
active
Registry nameservers
ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org
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.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org
NS in the zone
ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org
NameserverAddressesNetwork (AS)Glue
ns1.dnsimple-edge.com199.247.152.53 2620:111:8004::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns2.dnsimple-edge.net199.247.153.53 2620:111:8005::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns3.dnsimple-edge.io199.247.154.53 2620:111:8006::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns4.dnsimple-edge.org199.247.155.53 2620:111:8007::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org.
  • ✓ 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 (AS32771 (DNSIMPLE - DNSimple 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, .io, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.dnsimple-edge.com 199.247.152.53NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns1.dnsimple-edge.com 2620:111:8004::53NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns2.dnsimple-edge.net 199.247.153.53NOERROR, 17 ms, authoritativenoyes / yesrefused-
ns2.dnsimple-edge.net 2620:111:8005::53NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns3.dnsimple-edge.io 199.247.154.53NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns3.dnsimple-edge.io 2620:111:8006::53NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns4.dnsimple-edge.org 199.247.155.53NOERROR, 16 ms, authoritativenoyes / yesrefused-
ns4.dnsimple-edge.org 2620:111:8007::53NOERROR, 16 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 1668095774 · primary ns1.dnsimple-edge.com

Found

Primary (MNAME)
ns1.dnsimple-edge.com
Contact (RNAME)
admin.dnsimple.com
Serial
1668095774
Refresh / retry
86400 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.dnsimple-edge.com (199.247.152.53)1668095774
ns1.dnsimple-edge.com (2620:111:8004::53)1668095774
ns2.dnsimple-edge.net (199.247.153.53)1668095774
ns2.dnsimple-edge.net (2620:111:8005::53)1668095774
ns3.dnsimple-edge.io (199.247.154.53)1668095774
ns3.dnsimple-edge.io (2620:111:8006::53)1668095774
ns4.dnsimple-edge.org (199.247.155.53)1668095774
ns4.dnsimple-edge.org (2620:111:8007::53)1668095774

Checks

  • ✓ Serial 1668095774 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dnsimple-edge.com is one of the listed nameservers.
  • ✓ Contact admin@dnsimple.com #25
    The SOA RNAME admin.dnsimple.com means admin@dnsimple.com.
  • ✓ Timestamp serial #26
    The serial 1668095774 is a Unix timestamp (2022-11-10 15:56 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
6 January 2027

DS at the parent

Key tagAlgorithmDigestMatches a key
50824RSASHA256 (8)SHA256 9BD016698576FDA8…yes

DNSKEY in the zone

Key tagRoleAlgorithm
29343ZSK (256)RSASHA256 (8)
50824KSK (257)RSASHA256 (8)

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 50824 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: RSASHA256 (8).
  • ✓ Signatures valid until 2027-01-06 #30
    The earliest DNSKEY/SOA signature expires at 2027-01-06 20:54 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

info

12 records at the apex

Found

Read from
199.247.152.53:53
TypeValueTTL
SOAns1.dnsimple-edge.com. admin.dnsimple.com. 1668095774 86400 7200 604800 3003600
NSns1.dnsimple-edge.com.3600
NSns2.dnsimple-edge.net.3600
NSns3.dnsimple-edge.io.3600
NSns4.dnsimple-edge.org.3600
A76.76.21.213600
MX0 nieuweinstituut-nl.mail.protection.outlook.com.3600
TXT"apple-domain-verification=vvYN4teEr3esuwgO"60
TXT"v=spf1 ip4:93.92.30.114 ip4:149.143.22.2 include:spf.protection.outlook.com include:servers.mcsv.net include:mailgun.org include:sendgrid.net include:spf.tribecrm.nl -all"60
TXT"zoho-verification=zb70965818.zmverify.zoho.eu"600
TXT"google-site-verification=nmjJHyW7LDA3dzC683t7t14DaktN55yjmonCYfJlTkM"3600
TXT"notion-domain-verification=FKg6LgENwmqxM8jz2JCqsXrhpgzDh0IMMxDfM1CQGhA"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h.
  • ✓ 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