upst.dk is a .dk domain served by 2 nameservers (kianchau.ns.cloudflare.com, sue.ns.cloudflare.com). It was registered on 13 September 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.18.166 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 |
|---|---|---|---|---|---|---|---|
| 104.21.18.166 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.182.192 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:b6c0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::6815:12a6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.18.166,172.67.182.192 ech=AEX+DQBBVAAgACCYaEk5fchu1YXXkg45WmJCudxxajgUL6N7HV1VnKDVcgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b6c0,2606:4700:3032::6815:12a6 |
| www | 104.21.18.166 172.67.182.192 2606:4700:3031::ac43:b6c0 2606:4700:3032::6815:12a6 (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 | 2412860725 |
| Primary NS (MNAME) | kianchau.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | InterNetX GmbH |
| Registered | 1999-09-13 |
| Expires | 2027-09-30 (344d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 09:58:35 | 489ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-04 09:07:56 | 1313ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-02 08:59:43 | 427ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-01 08:01:24 | 620ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-29 21:56:06 shown | 586ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-28 01:46:39 | 2372ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 14:48:20 | 1640ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-22 07:56:18 | 1120ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-30 21:02:01 | 1094ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-26 12:31:29 | 734ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-23 08:23:26 | 881ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-20 22:32:44 | 1374ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-20 21:20:28 | 1115ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:06:39 | 693ms | 2 NS 2 A 0 MX | 🔓 Insecure |