1900mtb.dk is a .dk domain served by 2 nameservers (ganz.ns.cloudflare.com, melany.ns.cloudflare.com). It was registered on 15 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.76.229 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 |
|---|---|---|---|---|---|---|---|
| 104.21.76.229 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.201.238 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:4ce5 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:c9ee | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.76.229,172.67.201.238 ech=AEX+DQBBbgAgACAeHEVYVgOA+enDhgzyjaxRDJHXEPcRA5SK9Q+n1/f4RgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4ce5,2606:4700:3033::ac43:c9ee |
| www | 104.21.76.229 172.67.201.238 2606:4700:3032::6815:4ce5 2606:4700:3033::ac43:c9ee (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 | 2411593798 |
| Primary NS (MNAME) | ganz.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | NAMESHIELD |
| Registered | 2023-06-15 |
| Expires | 2027-06-14 (236d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-06 00:51:16 | 440ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-04 08:12:37 | 9925ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-22 01:42:18 | 5122ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-21 01:33:33 | 859ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-10 07:22:18 shown | 1577ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-27 22:04:41 | 776ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-20 20:12:51 | 2720ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 12:57:47 | 1034ms | 2 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-16 12:51:47 | 1156ms | 2 NS 1 A 0 MX | 🔓 Insecure |