plainmail.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 18 June 2026 (WHOIS) and first appeared in the .dk zone on 19 June 2026. Its website address 178.105.164.181 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mx.simply.com, mxa.eu.mailgun.org and 1 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 178.105.164.181 | 600s | static.181.164.105.178.clients.your-server.de | AS24940 | Hetzner Online GmbH | 178.104.0.0/15 | 🇩🇪 Germany | Nuremberg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | mx.simply.com | 94.231.106.20 | mx.simply.com | AS48854 team.blue Denmark A/S |
| 10 | 600s | mxa.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| 10 | 600s | mxb.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 93.191.156.46 |
| 🔶 Autoconfig | maildiscover.simply.com → 94.231.108.222 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | maildiscover.simply.com |
| TXT Record |
|---|
| v=spf1 include:spf.simply.com include:mailgun.org ~all |
| Policy | Record (plainmail.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.simply.com include:mailgun.org ~all |
| Policy | Record (_dmarc.plainmail.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:ed331023@dmarc.mailgun.org,mailto:x5omjtprjve@inbox.ondmarc.com,mailto:dmarc@robot.simply.com; ruf=mailto:ed331023@dmarc.mailgun.org,mailto:x5omjtprjve@inbox.ondmarc.com,mailto:dmarc@robot.simply.com; |
| www | 178.105.164.181 (AS24940) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 6/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 97A3BA009F39C761BFFB6574340E8138… |
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | A9D603AF4D7ED6B9246B4B68500CD6F2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026070500 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-06-18 |
| Expires | 2027-06-17 (234d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 23:12:58 | 2491ms | 3 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-05 09:50:46 | 696ms | 3 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-04 09:45:53 | 1250ms | 3 NS 1 A 6 MX | 🔒 Secure |
| 2026-09-01 18:28:25 | 2211ms | 3 NS 1 A 6 MX | 🔒 Secure |
| 2026-08-09 11:43:58 | 1771ms | 3 NS 1 A 6 MX | 🔒 Secure |
| 2026-07-08 11:15:01 | 3661ms | 3 NS 1 A 6 MX | 🔒 Secure |
| 2026-07-05 22:23:26 shown | 971ms | 3 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-04 15:12:22 | 1380ms | 3 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-23 20:29:51 | 1057ms | 3 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-21 10:02:19 | 1335ms | 3 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-19 08:38:17 | 1205ms | 3 NS 1 A 3 MX | 🔒 Secure |