testmailserver.dk is a .dk domain served by 2 nameservers (terin.ns.cloudflare.com, vida.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.79.193 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.awork.dk, alt1.mymailcheap.com and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.79.193 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.171.4 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1 | — | mail.awork.dk | 54.36.54.85 | mail.awork.dk | AS16276 OVH SAS |
| 5 | — | alt1.mymailcheap.com | 51.83.107.245 | alt1.mymailcheap.com | AS16276 OVH SAS |
| 10 | — | alt2.mymailcheap.com | 158.69.83.225 | alt2.mymailcheap.com | AS16276 OVH SAS |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:4fc1 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::ac43:ab04 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=188.114.96.1,188.114.97.1 ech=AEX+DQBBOwAgACAG1eGjqSgaba5UXmh5eE84iX3ffsXq/5DpIUhEmpCbbQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::1,2a06:98c1:3121::1 |
| TXT Record |
|---|
| nms-domain-verification=123877645517 |
| v=spf1 mx include:_spf.mymailcheap.com -all |
| Policy | Record (testmailserver.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:_spf.mymailcheap.com -all |
| Policy | Record (_dmarc.testmailserver.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100 |
| www | 104.21.79.193 172.67.171.4 2606:4700:3031::6815:4fc1 2606:4700:3033::ac43:ab04 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network testmailserver.dk: 104.21.79.193 172.67.171.4 2606:4700:3031::6815:4fc1 2606:4700:3033::ac43:ab04 (AS13335) www.testmailserver.dk: 104.21.79.193 172.67.171.4 2606:4700:3031::6815:4fc1 2606:4700:3033::ac43:ab04 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 5/10 · 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 | 2404027192 |
| Primary NS (MNAME) | terin.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 12:34:52 | 2469ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-30 06:35:19 | 868ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-16 06:06:12 | 1187ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-08 22:26:37 | 1361ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-01 04:29:14 | 9859ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-26 12:56:38 | 1020ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-07 10:49:41 | 1784ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-07-16 02:38:43 | 2158ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-25 04:20:13 | 1798ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-21 17:44:46 | 696ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-17 14:40:59 shown | 1444ms | 2 NS 2 A 3 MX | 🔓 Insecure |