netundervisning.dk

📜 Historical scan 2026-08-28 06:58:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

netundervisning.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 21 December 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.155 is hosted by team.blue Denmark A/S (AS48854) in Denmark. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 25ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.155	3600s	linux267.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	93.191.156.155
🔶 Autoconfig	93.191.156.155

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-12 10:15:02

www	93.191.156.155 (AS48854) (address records, no CNAME)
www vs bare domain	Same network netundervisning.dk: 93.191.156.155 (AS48854) www.netundervisning.dk: 93.191.156.155 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

95ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2020072990
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-06 19:52:09

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-12-21
Expires	2026-12-31 (74d)

📋 WHOIS#

⏱️ Lookup Timing#

25ms

44ms

37ms

AAAA

37ms

TXT

157ms

CAA

52ms

HTTPS

30ms

TLSA

57ms

SOA

0ms

MTA-STS

69ms

DNSSEC

95ms

SRV

63ms

Total

514ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 00:13:06	619ms	4 NS 1 A 0 MX	🔒 Secure
2026-10-01 00:09:25	424ms	4 NS 1 A 0 MX	🔒 Secure
2026-09-17 12:18:47	484ms	4 NS 1 A 0 MX	🔒 Secure
2026-08-28 06:58:25 shown	514ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-29 13:48:19	918ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-24 11:19:30	1081ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 17:55:41	661ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-17 13:14:08	2206ms	4 NS 1 A 0 MX	🔒 Secure