dupp.dk is a .dk domain served by 4 nameservers (ns1.dotserv.com, ns1.dotserv.net, ns2.dotserv.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.9.105.215 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.dupp.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 5.9.105.215 | 900s | odin.pageone.dk | AS24940 | Hetzner Online GmbH | 5.9.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.dupp.dk | 5.9.105.215 | odin.pageone.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 include:_spf.dotserv.com -all |
| Policy | Record (dupp.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.dotserv.com -all |
| Policy | Record (_dmarc.dupp.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 5.9.105.215 (AS24940) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.dupp.dk | GYhCU7N4spuh7D5AJi2IqRz_o2iq0iJ8OvI0IB21KiU |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Key type | Algorithm | Public key |
|---|---|---|
| KSK | ECDSA P-256/SHA-256 | AjoveauWaAfXwpw/qRPfpA9iaI8ZvjXcYNkT3uQ2… |
| Field | Value |
|---|---|
| Serial | 2021052407 |
| Primary NS (MNAME) | ns1.dotserv.com |
| Responsible (RNAME) | hostmaster@dotserv.com |
| Refresh | 14400s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 900s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 00:41:57 shown | 3014ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-02 01:29:51 | 794ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 05:24:51 | 11346ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 05:04:29 | 1483ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 05:01:36 | 478ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 05:01:13 | 4610ms | 4 NS 1 A 1 MX | 🔓 Insecure |