jtu.dk

📜 Historical scan 2026-06-17 15:10:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jtu.dk is a .dk domain served by 2 nameservers (ns1.designrus.dk, ns2.designrus.dk). It was registered on 5 October 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 49.12.120.222 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by server1.designrus.dk. The zone is of unknown DNSSEC status, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.designrus.dk	176.9.4.22 2a01:4f8:141:3416::2	server1.designrus.dk server1.designrus.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns2.designrus.dk	2a01:4f8:242:5649::2 49.12.124.182	server2.designrus.dk server2.designrus.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
49.12.120.222	—	server4.designrus.dk	AS24940	Hetzner Online GmbH	49.12.0.0/15	🇩🇪 Germany	Falkenstein

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	server1.designrus.dk	176.9.4.22 2a01:4f8:141:3416::2	server1.designrus.dk server1.designrus.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🔷 AAAA Records (IPv6)#

1 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:242:52a0::2	—	server4.designrus.dk	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 239ms

TXT Record
v=spf1 mx a include:_spf.designrus.dk -all

✉️ SPF#

Policy	Record (jtu.dk)
-all (hard fail)	v=spf1 mx a include:_spf.designrus.dk -all

📨 DMARC#

Policy	Record (_dmarc.jtu.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:postmaster@jtu.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

1 records 40ms

Flags	Tag	Value
0	issue	letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 11:52:32

www	49.12.120.222 2a01:4f8:242:52a0::2 (AS24940) (address records, no CNAME)
www vs bare domain	Same network jtu.dk: 49.12.120.222 2a01:4f8:242:52a0::2 (AS24940) www.jtu.dk: 49.12.120.222 2a01:4f8:242:52a0::2 (AS24940)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 0 iterations · no salt · opt-out RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

66ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	ds=0 dnskey=1

🏷️ SOA#

41ms

Field	Value
Serial	2026061502
Primary NS (MNAME)	ns1.designrus.dk
Responsible (RNAME)	admin@designrus.dk
Refresh	1200s
Retry	540s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-19 16:04:30

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-10-05
Expires	2026-12-31 (71d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

40ms

41ms

AAAA

40ms

TXT

239ms

CAA

40ms

HTTPS

40ms

TLSA

178ms

SOA

41ms

MTA-STS

100ms

DNSSEC

66ms

SRV

0ms

Total

788ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 11:52:32	927ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-10 05:11:18	1096ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-08 02:50:52	977ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-05 09:28:56	2164ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-29 08:53:45	857ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 06:31:28	954ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-17 17:56:53	1041ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-11 21:31:23	1492ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-04 19:55:12	1288ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-31 12:06:27	798ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-26 08:47:58	2822ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-25 08:12:04	8637ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-21 00:34:10	7096ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-15 16:39:07	1961ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-09 19:51:04	4136ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-08 11:42:17	9076ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-31 13:39:58	1114ms	2 NS 1 A 1 MX	❓ Unknown
2026-07-25 10:05:09	9164ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-20 13:01:20	1059ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-16 18:10:50	9819ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-11 01:43:32	1568ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-08 15:51:17	1271ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-01 01:27:15	1009ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-26 23:27:27	1085ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-22 14:13:10	1162ms	0 NS 0 A 0 MX	❓ Unknown