| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns-e.duelhost.dk | 49.12.84.170 | cde4.duelhost.dk | AS24940 Hetzner Online GmbH |
| dns-f.duelhost.dk | 195.201.247.57 | dns-f.duelhost.dk | AS24940 Hetzner Online GmbH |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 49.12.84.170 | 3600s | cde4.duelhost.dk | AS24940 | Hetzner Online GmbH | 49.12.0.0/15 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.acoustics.dk | 49.12.84.170 | cde4.duelhost.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 a mx include:relay.mailchannels.net -all |
| Policy | Record (acoustics.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:relay.mailchannels.net -all |
| Policy | Record (_dmarc.acoustics.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none |
| 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 | 2026082903 |
| Primary NS (MNAME) | dns-e.duelhost.dk |
| Responsible (RNAME) | hostmaster@acoustics.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |