sun21.dk is a .dk domain served by 5 nameservers (ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk and 2 more). It was registered on 1 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.116.232.201 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by sun21-dk.mail.protection.outlook.com, mx1.gigahost.dk and 2 more. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 217.116.232.201 | 3600s | 201.giga-ptr.232.116.217.in-addr.arpa web1.gigahost.dk |
AS47292 | Sentia Denmark A/S | 217.116.224.0/20 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| 🔶 Autoconfig | sun21.dk → 217.116.232.201 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | autodiscover.gigahost.dk |
| TXT Record |
|---|
| MS=ms48507173 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (sun21.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www CNAME | sun21.dk (all on sun21.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · policy: -all
No problems found| 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 | 2026062501 |
| Primary NS (MNAME) | ns1.gigahost.dk |
| Responsible (RNAME) | hostmaster@sun21.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2016-11-01 |
| Expires | 2026-11-30 (42d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 12:45:11 | 1389ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-10-17 12:42:30 | 1557ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-10-15 10:53:48 | 1410ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-10-09 01:39:41 | 3684ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-10-01 22:53:23 | 1249ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-26 22:02:20 | 1064ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-24 07:28:29 | 1734ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-18 01:14:30 | 1809ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-10 22:56:36 | 1430ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-09-04 03:36:58 | 1556ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-27 11:31:33 | 3633ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-20 02:57:50 | 2723ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-14 18:36:14 | 6314ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-06 22:05:16 | 3489ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-08-03 19:57:46 | 9391ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-23 16:59:17 | 9239ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-17 04:53:51 | 1685ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-09 22:38:30 | 3642ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-07-04 05:38:31 | 4433ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-28 20:32:25 shown | 1162ms | 5 NS 1 A 4 MX | 🔓 Insecure |
| 2026-06-19 01:28:57 | 4262ms | 5 NS 1 A 4 MX | ⚠️ Bogus |
| 2026-06-17 22:09:54 | 1049ms | 5 NS 1 A 4 MX | 🔓 Insecure |