ernlund-madsen.dk is a .dk domain served by 3 nameservers (ns1.openprovider.nl, ns2.openprovider.be, ns3.openprovider.eu). It was registered on 25 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.7100.eu. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 169.58.134.12 | 43198s | mail.7100.eu | AS51167 | — | — | 🇩🇪 Germany | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 900s | mail.7100.eu | 169.58.134.12 | mail.7100.eu | AS51167 Contabo GmbH |
| TXT Record |
|---|
| v=spf1 ip4:169.58.134.12 -all |
| Policy | Record (ernlund-madsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:169.58.134.12 -all |
| Policy | Record (_dmarc.ernlund-madsen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:postmaster@7100.eu |
| www CNAME | ernlund-madsen.dk (all on ernlund-madsen.dk) |
| www vs bare domain | Same network ernlund-madsen.dk: 162.244.95.12 2602:faa9:4002:861:248:17a2:8ab8:8ff8 (AS965) www.ernlund-madsen.dk: 162.244.95.12 2602:faa9:4002:861:248:17a2:8ab8:8ff8 (AS965) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
| dkim | — | RSA Invalid key data — receivers can't verify signatures |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 0/10 · 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 | 2026081104 |
| Primary NS (MNAME) | ns1.openprovider.nl |
| Responsible (RNAME) | dns@openprovider.eu |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-11-25 |
| Expires | 2026-11-30 (35d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 09:35:03 | 6162ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-10-06 18:58:28 | 9015ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-30 17:16:26 | 5453ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-28 09:15:51 | 7656ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-01 17:56:10 | 8123ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-25 04:15:33 | 6107ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-17 10:23:37 shown | 33199ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-12 20:48:57 | 2116ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-10 12:40:44 | 1231ms | 3 NS 1 A 1 MX | ❓ Unknown |
| 2026-08-07 00:37:56 | 19359ms | 2 NS 1 A 4 MX | ❓ Unknown |
| 2026-07-08 14:03:39 | 4292ms | 2 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-01 21:16:31 | 22190ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-24 23:10:18 | 6856ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-24 01:29:57 | 965ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 18:10:36 | 6506ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 08:15:38 | 672ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 08:15:24 | 1348ms | 2 NS 1 A 2 MX | 🔓 Insecure |