undervisere.dk

📜 Historical scan 2026-06-18 04:47:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

undervisere.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 19 September 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.97.209.175 is hosted by Microsoft Corporation (AS8075) in The Netherlands. 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#

2 records 55ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 86ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.97.209.175	—	—	AS8075	Microsoft Corporation	23.96.0.0/14	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

📧

No MX records found

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	folkeskolen-dg.cloudapp.net
🔶 Autoconfig	folkeskolen-dg.cloudapp.net

🔷 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 2026-10-14 03:53:18

www CNAME	folkeskolen-dg.cloudapp.net (all on cloudapp.net) ⚠ Dangling: the CNAME target does not exist. If that name can be claimed (an unregistered domain, or a free name on a hosting platform), whoever claims it controls www.undervisere.dk
www vs bare domain	www does not resolve undervisere.dk: 23.97.209.175 (AS8075) www.undervisere.dk: no address (all like this)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

117ms

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

🏷️ SOA#

70ms

Field	Value
Serial	2021080903
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-08 17:07:38

Field	Value
Registrar	DANDOMAIN A/S
Registered	2000-09-19
Expires	2027-09-30 (342d)

📋 WHOIS#

⏱️ Lookup Timing#

55ms

86ms

115ms

AAAA

89ms

TXT

277ms

CAA

102ms

HTTPS

93ms

TLSA

117ms

SOA

70ms

MTA-STS

116ms

DNSSEC

117ms

SRV

140ms

Total

846ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-08-27 23:16:54	535ms	2 NS 1 A 0 MX	🔒 Secure
2026-08-27 07:17:50	651ms	2 NS 1 A 0 MX	🔒 Secure
2026-06-18 04:47:50 shown	846ms	2 NS 1 A 0 MX	🔒 Secure