dder.dk is a .dk domain served by 2 nameservers (ns3.hostworld.dk, ns4.hostworld.dk). It was registered on 18 October 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.160.220.14 is hosted by IONOS SE (AS8560) in Germany. Mail is handled by dder.dk. 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 |
|---|---|---|---|---|---|---|---|
| 217.160.220.14 | 600s | ip217-160-220-14.pbiaas.com | AS8560 | IONOS SE | 217.160.0.0/16 | 🇩🇪 Germany | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 600s | dder.dk | 217.160.220.14 2a02:247a:256:2c00::1 |
ip217-160-220-14.pbiaas.com hostworld.dk |
AS8560 IONOS SE AS8560 IONOS SE |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 217.160.220.14 |
| 🔶 Autoconfig | 217.160.220.14 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:247a:256:2c00::1 | 600s | hostworld.dk | AS8560 | IONOS SE | 2a02:2478:0:0:0:0:0:0/29 | 🇩🇪 Germany | — |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| v=spf1 +a +mx +ip4:217.160.220.14 +ip4:139.162.165.153 ~all |
| Policy | Record (dder.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +ip4:217.160.220.14 +ip4:139.162.165.153 ~all |
| Policy | Record (_dmarc.dder.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | dder.dk (all on dder.dk) |
| www vs bare domain | Same network dder.dk: 217.160.220.14 2a02:247a:256:2c00::1 (AS8560) www.dder.dk: 217.160.220.14 2a02:247a:256:2c00::1 (AS8560) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~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: 2/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.dder.dk | dKHvaNy8aGiOVnmrLmySeTvkWsYI-SZEjSi_c9LhID0 |
| 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 | 2026060401 |
| Primary NS (MNAME) | ns3.hostworld.dk |
| Responsible (RNAME) | service@lignum.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2013-10-18 |
| Expires | 2027-10-31 (379d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 01:40:50 | 986ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 01:06:34 | 774ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 10:23:47 | 9616ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 18:23:05 | 1068ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-06 18:51:59 | 2991ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-29 13:37:36 | 726ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 01:15:11 shown | 2102ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 01:23:17 | 425ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 01:21:07 | 601ms | 2 NS 1 A 1 MX | 🔓 Insecure |