teori-undervisning.dk

📜 Historical scan 2026-06-24 03:08:30 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

teori-undervisning.dk is a .dk domain served by 4 nameservers (ns1.nhl-data.dk, ns2.nhl-data.dk, ns3.nhl-data.dk and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.206.180.167 is hosted by Public Cloud Ltd. (AS205787) in Germany. The zone is not DNSSEC-signed, 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#

4 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.nhl-data.dk	185.136.96.11 2a06:fb00:1::1:11	ns1.nhl-data.dk ns1.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
ns2.nhl-data.dk	185.136.97.11 2a06:fb00:1::2:11	ns2.nhl-data.dk ns2.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
ns3.nhl-data.dk	185.136.98.11 2a06:fb00:1::3:11	ns3.nhl-data.dk ns3.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd
ns4.nhl-data.dk	185.136.99.11 2a06:fb00:1::4:11	ns4.nhl-data.dk ns4.nhl-data.dk	AS203391 Cloud DNS Ltd AS203391 Cloud DNS Ltd

🌍 A Records#

2 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.206.180.167	3600s	42.http-proxy2.cloudns.net	AS205787	Public Cloud Ltd.	185.206.180.0/22	🇩🇪 Germany	—
185.206.180.185	3600s	185.http4.cloudns.net	AS205787	Public Cloud Ltd.	185.206.180.0/22	🇩🇪 Germany	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 40ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a0b:1640:1:1:1013:1:1:1	3600s	185.http4.cloudns.net	AS205787	Public Cloud Ltd.	2a0b:1640:1:0:0:0:0:0/48	🇧🇬 Bulgaria	—
2a0b:1640:1:1:1:1:1783:3454	3600s	http-proxy2.cloudns.net	AS205787	Public Cloud Ltd.	2a0b:1640:1:0:0:0:0:0/48	🇧🇬 Bulgaria	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 276ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (teori-undervisning.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.teori-undervisning.dk)
p=reject	v=DMARC1; p=reject;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-11 10:08:26

www	185.206.180.167 185.206.180.185 2a0b:1640:1:1:1013:1:1:1 2a0b:1640:1:1:1:1:1783:3454 (AS205787) (address records, no CNAME)
www vs bare domain	Same network teori-undervisning.dk: 185.206.180.167 185.206.180.185 2a0b:1640:1:1:1013:1:1:1 2a0b:1640:1:1:1:1:1783:3454 (AS205787) www.teori-undervisning.dk: 185.206.180.167 185.206.180.185 2a0b:1640:1:1:1013:1:1:1 2a0b:1640:1:1:1:1:1783:3454 (AS205787)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

156ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

88ms

Field	Value
Serial	2026060904
Primary NS (MNAME)	ns1.nhl-data.dk
Responsible (RNAME)	hostmaster@nhl-data.dk
Refresh	10800s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

41ms

63ms

AAAA

40ms

TXT

276ms

CAA

83ms

HTTPS

39ms

TLSA

42ms

SOA

88ms

MTA-STS

62ms

DNSSEC

156ms

SRV

129ms

Total

804ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 01:58:17	700ms	4 NS 2 A 0 MX	🔓 Insecure
2026-09-30 07:35:12	579ms	4 NS 2 A 0 MX	🔓 Insecure
2026-08-24 06:56:11	3508ms	4 NS 2 A 0 MX	🔓 Insecure
2026-08-23 00:48:25	2903ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-24 03:08:30 shown	804ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-23 05:39:03	1160ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 08:05:16	986ms	4 NS 2 A 0 MX	🔓 Insecure
2026-06-21 07:25:46	914ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 00:15:44	661ms	4 NS 2 A 0 MX	🔓 Insecure