dueholm-solution.dk is a .dk domain served by 4 nameservers (ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.9.90.188 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by dueholmsolution-dk01i.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.9.90.188 | 3600s | host6.slyde.dk | AS24940 | Hetzner Online GmbH | 5.9.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| mscid=8O/CuR2ZtIXWiwjzrs802Bky5ohXFsvz8JIKpj9xvtYVqrka2qHsv6W5ej2BNSBabvs8QNbc23tgYN+OuGQkjw== |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (dueholm-solution.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | Address record (no CNAME) |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 1 |
| Primary NS (MNAME) | ns1.bdm.microsoftonline.com |
| Responsible (RNAME) | azuredns-hostmaster@microsoft.com |
| Refresh | 3600s |
| Retry | 300s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 17:52:23 shown | 844ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-23 16:10:13 | 760ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-01 12:28:42 | 10238ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 09:54:26 | 1140ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 10:55:24 | 3611ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 11:56:40 | 2053ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 07:20:51 | 905ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 04:55:59 | 668ms | 4 NS 1 A 1 MX | 🔓 Insecure |