sønderborg.dk is a .dk domain served by 4 nameservers (ns1-01.azure-dns.com, ns2-01.azure-dns.net, ns3-01.azure-dns.org and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.62.237.16 is hosted by TDC Holding A/S (AS3292) in Denmark. The zone is DNSSEC-signed and validates, publishes a 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 80.62.237.16 | — | 16.1-126.237.62.80.in-addr.arpa pki.sonderborg.dk vejledninger.sonderborg.dk |
AS3292 | TDC Holding A/S | 80.62.0.0/15 | 🇩🇰 Denmark | Sønderborg |
| TXT Record |
|---|
| v=spf1 include:_spf_a.sonderborg.dk include:_spf_b.sonderborg.dk -all |
| Policy | Record (sønderborg.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf_a.sonderborg.dk include:_spf_b.sonderborg.dk -all |
| Policy | Record (_dmarc.sønderborg.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:653640a21c83d@dmarc.centerasecurity.com; sp=quarantine; fo=1; |
| www | 80.62.237.40 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 7/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxdomain |
| Field | Value |
|---|---|
| Serial | 47 |
| Primary NS (MNAME) | ns1-01.azure-dns.com |
| Responsible (RNAME) | hostmaster@sonderborg.dk |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 23:36:36 | 547ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-28 01:37:43 | 1740ms | 4 NS 1 A 0 MX | ❓ Unknown |
| 2026-06-25 07:51:48 | 570ms | 4 NS 1 A 0 MX | ❓ Unknown |
| 2026-06-23 07:04:12 | 1177ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 01:28:25 | 693ms | 4 NS 1 A 0 MX | ❓ Unknown |
| 2026-06-17 22:57:58 shown | 524ms | 4 NS 1 A 0 MX | 🔒 Secure |