Domain report: notubiz.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

info

dimitris.ns.cloudflare.com, irena.ns.cloudflare.com

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: dimitris.ns.cloudflare.com, irena.ns.cloudflare.com
NS in the zone: dimitris.ns.cloudflare.com, irena.ns.cloudflare.com

Nameserver	Addresses	Network (AS)	Glue
dimitris.ns.cloudflare.com	172.64.35.6 162.159.44.6 108.162.195.6 2803:f800:50::6ca2:c306 2a06:98c1:50::ac40:2306 2606:4700:58::a29f:2c06	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 AS13335 CLOUDFLARENET - Cloudflare, Inc., US	-
irena.ns.cloudflare.com	162.159.38.79 108.162.194.79 172.64.34.79 2803:f800:50::6ca2:c24f 2a06:98c1:50::ac40:224f 2606:4700:50::a29f:264f	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 AS13335 CLOUDFLARENET - Cloudflare, Inc., US	-

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dimitris.ns.cloudflare.com, irena.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

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dimitris.ns.cloudflare.com 172.64.35.6	NOERROR, 16 ms, authoritative	no	yes / yes	refused	2026.10.2
dimitris.ns.cloudflare.com 162.159.44.6	NOERROR, 33 ms, authoritative	no	yes / yes	refused	2026.10.2
dimitris.ns.cloudflare.com 108.162.195.6	NOERROR, 16 ms, authoritative	no	yes / yes	refused	2026.10.2
dimitris.ns.cloudflare.com 2803:f800:50::6ca2:c306	NOERROR, 18 ms, authoritative	no	yes / yes	refused	2026.10.2
dimitris.ns.cloudflare.com 2a06:98c1:50::ac40:2306	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
dimitris.ns.cloudflare.com 2606:4700:58::a29f:2c06	NOERROR, 18 ms, authoritative	no	yes / yes	refused	2026.10.2
irena.ns.cloudflare.com 162.159.38.79	NOERROR, 33 ms, authoritative	no	yes / yes	refused	2026.10.2
irena.ns.cloudflare.com 108.162.194.79	NOERROR, 19 ms, authoritative	no	yes / yes	refused	2026.10.2
irena.ns.cloudflare.com 172.64.34.79	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
irena.ns.cloudflare.com 2803:f800:50::6ca2:c24f	NOERROR, 16 ms, authoritative	no	yes / yes	refused	2026.10.2
irena.ns.cloudflare.com 2a06:98c1:50::ac40:224f	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
irena.ns.cloudflare.com 2606:4700:50::a29f:264f	NOERROR, 16 ms, authoritative	no	yes / yes	refused	2026.10.2

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: dimitris.ns.cloudflare.com: "2026.10.2"; irena.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 2417719651 · primary dimitris.ns.cloudflare.com

Found

Primary (MNAME): dimitris.ns.cloudflare.com
Contact (RNAME): dns.cloudflare.com
Serial: 2417719651
Refresh / retry: 10000 s / 2400 s
Expire: 604800 s
Negative TTL: 1800 s

Serial per nameserver

Nameserver	Serial
dimitris.ns.cloudflare.com (172.64.35.6)	2417719651
dimitris.ns.cloudflare.com (162.159.44.6)	2417719651
dimitris.ns.cloudflare.com (108.162.195.6)	2417719651
dimitris.ns.cloudflare.com (2803:f800:50::6ca2:c306)	2417719651
dimitris.ns.cloudflare.com (2a06:98c1:50::ac40:2306)	2417719651
dimitris.ns.cloudflare.com (2606:4700:58::a29f:2c06)	2417719651
irena.ns.cloudflare.com (162.159.38.79)	2417719651
irena.ns.cloudflare.com (108.162.194.79)	2417719651
irena.ns.cloudflare.com (172.64.34.79)	2417719651
irena.ns.cloudflare.com (2803:f800:50::6ca2:c24f)	2417719651
irena.ns.cloudflare.com (2a06:98c1:50::ac40:224f)	2417719651
irena.ns.cloudflare.com (2606:4700:50::a29f:264f)	2417719651

Checks

✓ Serial 2417719651 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 dimitris.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 2417719651 is a Unix timestamp (2046-08-12 20:47 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Signatures valid until: 23 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
2371	ECDSAP256SHA256 (13)	SHA256 FB894D5841FF153D…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
2371	KSK (257)	ECDSAP256SHA256 (13)
34505	ZSK (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 13:50 UTC and expires at 2026-10-23 15:50 UTC.

Records

info

23 records at the apex

Found

Read from: 172.64.35.6:53

Type	Value	TTL
SOA	dimitris.ns.cloudflare.com. dns.cloudflare.com. 2417719651 10000 2400 604800 1800	1800
NS	dimitris.ns.cloudflare.com.	86400
NS	irena.ns.cloudflare.com.	86400
A	198.202.211.1	300
MX	0 notubiz-nl.mail.protection.outlook.com.	300
TXT	"NAOkqr35Mi6hD0KWOcHpOaEo0VGpSc27BznVimwk8m6ZNdj410CCpgcI1BkAQWN103EPFo2OCK4JxGXWspCaxw=="	300
TXT	"atlassian-domain-verification=hnRN8iiDwRmr46FbSs8DR5DNt8dXPGOyKQMIAaDA5KCSV7crpL6b8yMwnqKoFtvy"	300
TXT	"bw=ZDcP4QqlbjHSOWSK3TbfxZfj8Iu03NtITpcP6BEnojQg"	300
TXT	"reconfirm-verification=86f433529c649983889908c1a5e00af2bfea0e71ad74b231d1ae6f5f79faa761"	300
TXT	"v=spf1 a ip4:185.54.180.131/32 ip4:178.18.128.29 ip6:2a02:990:118:1:1:355:0:2 include:spf.mybit.nl include:spf.topdesk.net include:spf.protection.outlook.com include:spf.afas.online include:spf.bundeling.com include:spf.eprov.eu -all"	300
CAA	0 iodef "mailto:hosting@mybit.nl"	300
CAA	0 issue "comodoca.com"	300
CAA	0 issue "digicert.com; cansignhttpexchanges=yes"	300
CAA	0 issue "letsencrypt.org"	300
CAA	0 issue "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issue "sectigo.com"	300
CAA	0 issue "ssl.com"	300
CAA	0 issuewild "comodoca.com"	300
CAA	0 issuewild "digicert.com; cansignhttpexchanges=yes"	300
CAA	0 issuewild "letsencrypt.org"	300
CAA	0 issuewild "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issuewild "sectigo.com"	300
CAA	0 issuewild "ssl.com"	300

Checks

✓ TTLs within range #32

TTLs: A 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
✓ CAA restricts issuance #35

Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com.