sportoptimizing.dk is a .dk domain served by 2 nameservers (odin.ns.cloudflare.com, olga.ns.cloudflare.com). It was registered on 6 March 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.66.157 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 |
|---|---|---|---|---|---|---|---|
| 104.21.66.157 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.161.129 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:429d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:a181 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.66.157,172.67.161.129 ech=AEX+DQBBxQAgACDyYg1i/e0zUqcV9OWielLTCYkxwkA9aXhsLt+HvVibBwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:429d,2606:4700:3033::ac43:a181 |
| www | 104.21.66.157 172.67.161.129 2606:4700:3031::6815:429d 2606:4700:3032::ac43:a181 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network sportoptimizing.dk: 104.21.66.157 172.67.161.129 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) www.sportoptimizing.dk: 104.21.66.157 172.67.161.129 2606:4700:3031::6815:429d 2606:4700:3032::ac43:a181 (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 | 2406194278 |
| Primary NS (MNAME) | odin.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2024-03-06 |
| Expires | 2028-03-05 (503d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 23:26:20 | 629ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 23:23:40 | 482ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-22 18:14:27 | 9424ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-19 12:45:23 | 631ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 00:53:27 | 9391ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-05 21:47:17 | 921ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-18 09:54:35 | 856ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-28 01:46:43 | 736ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-23 11:14:31 | 823ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-23 01:33:06 | 1100ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 22:25:53 shown | 1020ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-18 08:34:43 | 1253ms | 2 NS 2 A 0 MX | 🔓 Insecure |