isy-online.dk is a registered .dk domain whose nameservers (dns.nic.xlink.net, koeln.nic.xlink.net) do not answer for it, so it is currently a lame delegation and does not resolve. It was registered on 23 June 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns.nic.xlink.net | 194.45.97.99 | chemnitz.nic.xlink.net | AS6724 Strato GmbH |
| koeln.nic.xlink.net | 193.141.3.6 | ulm.nic.xlink.net | AS6724 Strato GmbH |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown (the delegated nameservers don't answer) |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: failure |
| Field | Value |
|---|---|
| Registrar | united-domains GmbH |
| Registered | 2010-06-23 |
| Expires | 2027-06-30 (255d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 16:55:04 shown | 3576ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-23 14:55:57 | 3647ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-22 12:56:06 | 2145ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-21 12:51:49 | 8017ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-20 12:31:02 | 12129ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-19 09:57:07 | 6705ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-18 09:54:28 | 3817ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-17 02:57:15 | 6641ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-14 23:43:42 | 7109ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-13 10:49:16 | 11436ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-12 07:51:21 | 5602ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-10 21:19:56 | 5548ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-08 15:44:13 | 11396ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-06 06:12:23 | 3926ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-03 08:55:06 | 9276ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-30 15:09:17 | 3671ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-27 23:33:36 | 9620ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-26 23:16:47 | 5240ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-25 23:09:12 | 1706ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-24 22:48:34 | 12064ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-23 20:21:34 | 2125ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-22 20:18:32 | 9375ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-21 18:48:57 | 1736ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-20 09:56:13 | 1638ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-19 09:26:35 | 1709ms | 2 NS 0 A 0 MX | ❓ Unknown |