Domain report: studytube.nl

Registration

info

.nl country-code

Found

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

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

#3

Delegation

info

ns-1034.awsdns-01.org, ns-106.awsdns-13.com, ns-1553.awsdns-02.co.uk, ns-968.awsdns-57.net

Found

Parent zone: nl
Delegation from: ns1.dns.nl (194.0.28.53)
NS at the parent: ns-1034.awsdns-01.org, ns-106.awsdns-13.com, ns-1553.awsdns-02.co.uk, ns-968.awsdns-57.net
NS in the zone: ns-1034.awsdns-01.org, ns-106.awsdns-13.com, ns-1553.awsdns-02.co.uk, ns-968.awsdns-57.net

Nameserver	Addresses	Network (AS)	Glue
ns-1034.awsdns-01.org	205.251.196.10 2600:9000:5304:a00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-106.awsdns-13.com	205.251.192.106 2600:9000:5300:6a00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-1553.awsdns-02.co.uk	205.251.198.17 2600:9000:5306:1100::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-968.awsdns-57.net	205.251.195.200 2600:9000:5303:c800::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-

Checks

✓ 4 nameservers #6

Delegated to ns-1034.awsdns-01.org, ns-106.awsdns-13.com, ns-1553.awsdns-02.co.uk, ns-968.awsdns-57.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 4 IPv4 /24s and 4 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., 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, .net, .org, .uk.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-1034.awsdns-01.org 205.251.196.10	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
ns-1034.awsdns-01.org 2600:9000:5304:a00::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-106.awsdns-13.com 205.251.192.106	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-106.awsdns-13.com 2600:9000:5300:6a00::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-1553.awsdns-02.co.uk 205.251.198.17	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-1553.awsdns-02.co.uk 2600:9000:5306:1100::1	NOERROR, 13 ms, authoritative	no	yes / yes	refused	-
ns-968.awsdns-57.net 205.251.195.200	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-968.awsdns-57.net 2600:9000:5303:c800::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-

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 1 · primary ns-1553.awsdns-02.co.uk

Found

Primary (MNAME): ns-1553.awsdns-02.co.uk
Contact (RNAME): awsdns-hostmaster.amazon.com
Serial: 1
Refresh / retry: 7200 s / 900 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns-1034.awsdns-01.org (205.251.196.10)	1
ns-1034.awsdns-01.org (2600:9000:5304:a00::1)	1
ns-106.awsdns-13.com (205.251.192.106)	1
ns-106.awsdns-13.com (2600:9000:5300:6a00::1)	1
ns-1553.awsdns-02.co.uk (205.251.198.17)	1
ns-1553.awsdns-02.co.uk (2600:9000:5306:1100::1)	1
ns-968.awsdns-57.net (205.251.195.200)	1
ns-968.awsdns-57.net (2600:9000:5303:c800::1)	1

Checks

✓ Serial 1 everywhere #22

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

SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns-1553.awsdns-02.co.uk is one of the listed nameservers.
✓ Contact awsdns-hostmaster@amazon.com #25

The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
✓ Counter serial #26

The serial 1 is a plain counter.

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Signatures valid until: 22 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
60559	ECDSAP256SHA256 (13)	SHA256 C8708939DA194702…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
10896	ZSK (256)	ECDSAP256SHA256 (13)
47858	ZSK (256)	ECDSAP256SHA256 (13)
36016	KSK (257)	ECDSAP256SHA256 (13)
60559	KSK (257)	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 60559 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Short-lived signatures (online signing) #30

Signatures are valid for 2h0m0s and created on demand; the current one was made at 2026-10-22 15:21 UTC and expires at 2026-10-22 17:36 UTC.

Records

info

21 records at the apex

Found

Read from: 205.251.196.10:53

Type	Value	TTL
SOA	ns-1553.awsdns-02.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	900
NS	ns-1034.awsdns-01.org.	3600
NS	ns-106.awsdns-13.com.	3600
NS	ns-1553.awsdns-02.co.uk.	3600
NS	ns-968.awsdns-57.net.	3600
A	198.202.211.1	300
MX	1 aspmx.l.google.com.	300
MX	10 aspmx2.googlemail.com.	300
MX	10 aspmx3.googlemail.com.	300
MX	5 alt1.aspmx.l.google.com.	300
MX	5 alt2.aspmx.l.google.com.	300
TXT	"MS=ms87374716"	3600
TXT	"anthropic-domain-verification-c068tq=mpSvk0DYcmOx7hxTugTRQzaI5"	3600
TXT	"atlassian-domain-verification=/4dVy1Zb3yai5T9kf8uPowSC6MzPFeGqMa94c6IusJHSaBSefhJi7l3s7cBnuhOF"	3600
TXT	"google-site-verification=-vz8ON-w0bDQG1UpSPyJ7k2KSVDzF1qM1NQz10Xffks"	3600
TXT	"google-site-verification=hoVRnUJL54cd0-B9l9ekG0BoCzjJUhC4SkFWT1gvhwo"	3600
TXT	"google-site-verification=s9J2brWtbQX2JL5Rboli3-jza9j9lxIxC3zSk_ZRbFc"	3600
TXT	"mgverify=00d3b81453c795a24f2837146a78cd0a2cf1bc24e4b8c7778d924287348548ac"	3600
TXT	"openai-domain-verification=dv-Bv90GprfR4qrBoxMjLtnnmJx"	3600
TXT	"sendinblue-code:45e36fb68dbe451d888dca22106b90e6"	3600
TXT	"v=spf1 include:_spf_by_autospf_com.studytube.nl ~all"	3600

Checks

✓ TTLs within range #32

TTLs: A 5m, MX 5m, NS 1h.
✓ 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
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