jacobmadsen.dk is a .dk domain served by 2 nameservers (dns-c.duelhost.dk, dns-d.duelhost.dk). It was registered on 18 April 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 142.132.130.246 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by jacobmadsen-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns-c.duelhost.dk | 142.132.130.246 | cde2.duelhost.dk | AS24940 Hetzner Online GmbH |
| dns-d.duelhost.dk | 195.201.247.4 | dns-d.duelhost.dk | AS24940 Hetzner Online GmbH |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 142.132.130.246 | — | cde2.duelhost.dk | AS24940 | Hetzner Online GmbH | 142.132.128.0/17 | 🇩🇪 Germany | Falkenstein |
| TXT Record |
|---|
| google-site-verification=B8dgSqC8IhmnnrvBvpdJbxj68MD4D_pYjUryjys2Msg |
| v=spf1 a mx include:relay.mailchannels.net include:spf.protection.outlook.com -all |
| Policy | Record (jacobmadsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:relay.mailchannels.net include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.jacobmadsen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none |
| www | 93.191.158.49 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 |
DNS lookups: 4/10 · 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 | 2026041203 |
| Primary NS (MNAME) | dns-c.duelhost.dk |
| Responsible (RNAME) | hostmaster@jacobmadsen.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2023-04-18 |
| Expires | 2027-04-17 (179d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 14:24:44 | 1066ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 23:53:43 | 878ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 02:40:44 | 1202ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-03 13:08:43 | 1638ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-31 20:20:09 | 1162ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 16:51:05 | 692ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-26 06:37:37 | 788ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 15:26:50 | 845ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 12:39:48 | 1269ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-19 22:57:20 | 4827ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:22:26 shown | 1002ms | 2 NS 1 A 1 MX | 🔓 Insecure |