sisk.dk is a .dk domain served by 2 nameservers (algin.ns.cloudflare.com, april.ns.cloudflare.com). It was registered on 2 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.69.198 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 |
|---|---|---|---|---|---|---|---|
| 104.21.69.198 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.212.204 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:d4cc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::6815:45c6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.69.198,172.67.212.204 ech=AEX+DQBBMAAgACCzfJnkHeFOvEV0dvKuEgc21MVV2kIl7TpTvua7c4uSdgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:d4cc,2606:4700:3036::6815:45c6 |
| www | 104.21.69.198 172.67.212.204 2606:4700:3030::6815:45c6 2606:4700:3033::ac43:d4cc (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 | 2403791567 |
| Primary NS (MNAME) | algin.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 | 2019-04-02 |
| Expires | 2027-04-30 (187d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 18:12:30 | 478ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 11:05:15 | 533ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-26 09:53:32 | 585ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-22 08:28:19 | 541ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-19 14:35:42 | 1349ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-12 11:23:21 | 686ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-08 01:30:24 | 894ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-01 05:00:47 | 1295ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 18:28:19 | 729ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-25 11:15:08 | 475ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-15 12:15:31 | 752ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-07-08 13:23:36 | 1118ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-27 07:58:46 shown | 1608ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-18 04:23:45 | 802ms | 2 NS 2 A 0 MX | 🔓 Insecure |