diplomer.dk is a .dk domain served by 2 nameservers (jeff.ns.cloudflare.com, rita.ns.cloudflare.com). It was registered on 17 January 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.75.54 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.op-email.eu. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.75.54 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.214.210 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1 | 300s | mail.op-email.eu | 34.13.213.173 | mail.op-email.eu | AS396982 Google LLC |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.mailhosting.dk → 34.13.213.173 |
| 🔶 Autoconfig | mail.mailhosting.dk → 34.13.213.173 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:4b36 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::ac43:d6d2 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.75.54,172.67.214.210 ech=AEX+DQBBvgAgACCkBoLiwsd9x4iQLCW6okyRzx2Z7/k62hvakMBs6FLgDgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4b36,2606:4700:3034::ac43:d6d2 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _imap._tcp | 0 | 1 | 143 | mail2.mailhosting.dk |
| _imaps._tcp | 0 | 1 | 993 | mail2.mailhosting.dk |
| TXT Record |
|---|
| v=spf1 mx ra=postmaster -all |
| Policy | Record (diplomer.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx ra=postmaster -all |
| Policy | Record (_dmarc.diplomer.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:postmaster@diplomer.dk; ruf=mailto:postmaster@diplomer.dk |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 16553487515061117972 |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:postmaster@diplomer.dk |
| www | 104.21.75.54 172.67.214.210 2606:4700:3031::6815:4b36 2606:4700:3034::ac43:d6d2 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network diplomer.dk: 104.21.75.54 172.67.214.210 2606:4700:3031::6815:4b36 2606:4700:3034::ac43:d6d2 (AS13335) www.diplomer.dk: 104.21.75.54 172.67.214.210 2606:4700:3031::6815:4b36 2606:4700:3034::ac43:d6d2 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2410304003 |
| Primary NS (MNAME) | jeff.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 | 2024-01-17 |
| Expires | 2027-01-16 (91d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 05:06:23 | 670ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-01 04:55:16 | 937ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-09-10 21:49:48 | 789ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-25 13:47:55 | 1680ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-17 23:50:38 | 1545ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-08-08 12:42:24 | 1032ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-24 02:27:17 shown | 3568ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-07-03 06:13:41 | 2013ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-28 06:13:38 | 743ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-06-17 03:16:04 | 601ms | 2 NS 2 A 1 MX | 🔒 Secure |