understrup.dk

Records from scan: 2026-09-30 15:25:43 · 1160ms total · last checked 2026-10-16 13:26 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

understrup.dk is a .dk domain served by 2 nameservers (ns1.onwelcom.dk, ns2.onwelcom.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.51.79.130 is hosted by Powernet Aps (AS205984) in Denmark. Mail is handled by understrup-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 66ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.onwelcom.dk	185.51.79.241	ns1.onwelcom.dk	AS205984 Powernet Aps
ns2.onwelcom.dk	185.51.79.251	—	AS205984 Powernet Aps

🌍 A Records#

1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.51.79.130	86400s	web02.onwelcom.dk	AS205984	Powernet Aps	185.51.78.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	86400s	understrup-dk.mail.protection.outlook.com	2a01:111:f403:c967:: 2a01:111:f403:c967::2 2a01:111:f403:c967::4 2a01:111:f403:c967::6 52.101.209.2 52.101.209.4 52.101.209.6 52.101.209.74	mail-cpcp307cu00400.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpap307cu00402.inbound.protection.outlook.com mail-cpap307cu00204.inbound.protection.outlook.com mail-cpcp307cu00206.inbound.protection.outlook.com mail-cpcp307cu00402.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.149.152
🔶 Autoconfig	185.51.79.130

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 187ms

TXT Record
MS=ms70101509
v=spf1 include:spf.protection.outlook.com a ip4:185.51.79.235 -all

✉️ SPF#

Policy	Record (understrup.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com a ip4:185.51.79.235 -all

📨 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#

checked 2026-10-11 03:45:42

www	185.51.79.130 (AS205984) (address records, no CNAME)
www vs bare domain	Same network understrup.dk: 185.51.79.130 (AS205984) www.understrup.dk: 185.51.79.130 (AS205984)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

64ms

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

🏷️ SOA#

39ms

Field	Value
Serial	2017021412
Primary NS (MNAME)	ns1.onwelcom.dk
Responsible (RNAME)	hostmaster@understrup.dk
Refresh	3600s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

66ms

52ms

36ms

AAAA

60ms

TXT

187ms

CAA

34ms

HTTPS

32ms

TLSA

596ms

SOA

39ms

MTA-STS

62ms

DNSSEC

64ms

SRV

70ms

Total

1160ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 15:25:43 shown	1160ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-28 21:10:21	3069ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-28 04:28:52	850ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-30 14:18:55	2741ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-25 05:09:01	592ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-23 12:03:19	567ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-17 21:59:42	478ms	2 NS 1 A 2 MX	🔓 Insecure