fourjacks.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 15 April 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.116.232.216 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mx1.gigahost.dk, mx2.gigahost.dk and 1 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 |
|---|---|---|---|---|---|---|---|
| 217.116.232.216 | 3600s | 216.giga-ptr.232.116.217.in-addr.arpa web16.gigahost.dk |
AS47292 | Sentia Denmark A/S | 217.116.224.0/20 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.gigahost.dk | 46.183.139.11 | mx1.gigahost.dk | AS47292 Sentia Denmark A/S |
| 10 | 3600s | mx2.gigahost.dk | 46.183.139.12 | mx2.gigahost.dk | AS47292 Sentia Denmark A/S |
| 10 | 3600s | mx3.gigahost.dk | 46.183.139.13 | mx3.gigahost.dk | AS47292 Sentia Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | fourjacks.dk → 217.116.232.216 |
| 🔶 Autoconfig | fourjacks.dk → 217.116.232.216 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | autodiscover.gigahost.dk |
| www CNAME | fourjacks.dk (all on fourjacks.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.fourjacks.dk | fourjacks.dk |
| 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 | 2026082701 |
| Primary NS (MNAME) | ns1.gigahost.dk |
| Responsible (RNAME) | hostmaster@fourjacks.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | GIGAHOST ApS |
| Registered | 2011-04-15 |
| Expires | 2028-04-30 (554d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 20:06:25 | 992ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-08 20:49:28 | 907ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-07 20:39:00 | 890ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-01 06:09:47 | 593ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-25 16:58:08 | 2500ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-24 07:20:28 | 1206ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-18 07:57:54 | 1285ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-11 06:01:15 | 806ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-04 02:20:30 | 938ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-27 15:13:12 shown | 858ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-20 13:49:47 | 7463ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-13 03:53:40 | 2016ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-07 02:39:07 | 1279ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-06 00:13:49 | 923ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-24 00:58:57 | 8830ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-17 13:20:23 | 1435ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-09 13:41:33 | 1493ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-03 13:42:44 | 2550ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-01 13:25:15 | 910ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-27 12:29:18 | 1574ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-26 07:03:13 | 1013ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 17:50:50 | 2282ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 12:42:19 | 1166ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 11:38:08 | 11364ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-17 10:23:51 | 548ms | 5 NS 1 A 3 MX | 🔓 Insecure |