dtdmail.dk is a .dk domain served by 2 nameservers (ingrid.ns.cloudflare.com, rodney.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.81.16 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.81.16 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.137.124 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:5110 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:897c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.81.16,172.67.137.124 ech=AEX+DQBBLAAgACBjfySA55pvVZ9FloYW28x0XElPQ7alFKmKgPgddvicLwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:5110,2606:4700:3037::ac43:897c |
| TXT Record |
|---|
| v=spf1 mx include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com -all |
| Policy | Record (dtdmail.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com -all |
| Policy | Record (_dmarc.dtdmail.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:df8e5f6289f844d5a87e07a1c4427699@dmarc-reports.cloudflare.net |
| www | Exists, no address |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 4/10 · policy: -all
No problems found| 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 | 2410864974 |
| Primary NS (MNAME) | ingrid.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 12:56:13 | 570ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-28 00:46:41 | 3000ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-22 04:52:19 | 3911ms | 4 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-30 11:03:14 shown | 1504ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-21 15:24:12 | 817ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-25 09:14:18 | 852ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 04:50:19 | 447ms | 2 NS 2 A 0 MX | 🔓 Insecure |