contactseminar.dk is a .dk domain served by 2 nameservers (linda.ns.cloudflare.com, mario.ns.cloudflare.com). It was registered on 12 December 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.15.83 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.15.83 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.161.248 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:f53 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:a1f8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.15.83,172.67.161.248 ech=AEX+DQBB6wAgACDQtwa7mn8iB+M9TD+HjKOOhdulaOu8NxRIdC6yJeogCAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:f53,2606:4700:3037::ac43:a1f8 |
| www | 104.21.15.83 172.67.161.248 2606:4700:3031::6815:f53 2606:4700:3037::ac43:a1f8 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network contactseminar.dk: 104.21.15.83 172.67.161.248 2606:4700:3031::6815:f53 2606:4700:3037::ac43:a1f8 (AS13335) www.contactseminar.dk: 104.21.15.83 172.67.161.248 2606:4700:3031::6815:f53 2606:4700:3037::ac43:a1f8 (AS13335) |
| Wildcard | No |
| 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 | 2414487066 |
| Primary NS (MNAME) | linda.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Obsidian Digital A/S |
| Registered | 2020-12-12 |
| Expires | 2026-12-31 (72d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 15:19:47 | 1040ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 11:09:50 | 433ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-17 11:13:33 shown | 1120ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-15 17:48:08 | 2781ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-08 16:49:23 | 1234ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-03 16:37:00 | 470ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 16:30:37 | 820ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-16 14:43:36 | 24602ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-15 12:56:48 | 8684ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-28 14:15:53 | 1544ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-27 13:35:11 | 730ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-19 22:11:50 | 977ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 22:11:55 | 395ms | 2 NS 2 A 0 MX | ❓ Unknown |