systemmailer.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 7 March 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 194.150.113.21 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx01.dandomain.dk, 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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 194.150.113.21 | 3600s | — | AS48854 | team.blue Denmark A/S | 194.150.112.0/22 | 🇩🇰 Denmark | Skanderborg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx01.dandomain.dk | 212.237.249.50 | mx1.dandomain.dk | AS48854 team.blue Denmark A/S |
| 10 | 3600s | mxa.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| 10 | 3600s | mxb.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| TXT Record |
|---|
| v=spf1 include:mailgun.org ~all |
| Policy | Record (systemmailer.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:mailgun.org ~all |
| Policy | Record (_dmarc.systemmailer.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;rua=mailto:01145d906b@rua.easydmarc.eu;ruf=mailto:01145d906b@ruf.easydmarc.eu;fo=1 |
| www | 194.150.113.21 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 5/10 · 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 | 2023112303 |
| Primary NS (MNAME) | ns.dandomain.dk |
| Responsible (RNAME) | hostmaster@dandomain.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2013-03-07 |
| Expires | 2027-03-31 (156d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 03:55:57 shown | 671ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-26 14:18:23 | 742ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-10 15:09:00 | 819ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-02 11:50:17 | 944ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-19 17:06:05 | 822ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 17:16:47 | 9487ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 17:16:36 | 1157ms | 2 NS 1 A 3 MX | 🔒 Secure |