optisyn.dk is a .dk domain with no delegation in this scan. It was registered on 5 February 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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.
| www | 93.191.156.141 (AS48854) (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 | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-optisyn-dk._domainkey.optisyn.r-v1.dkim.mail.microsoft | 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.
| Check | Result |
|---|---|
| Validation Status | Not applicable: the domain has no delegation, so there is no zone to validate (stored verdict: ❓ Unknown). |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: failure |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2025-02-05 |
| Expires | 2027-02-04 (108d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 14:58:17 | 1503ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 10:52:49 | 1269ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 03:32:13 | 1356ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 02:31:49 | 2707ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 05:43:40 | 1114ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 15:03:37 | 1167ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 00:12:12 | 789ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 17:11:05 | 1770ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 13:03:01 shown | 921ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:59:03 | 3053ms | 3 NS 1 A 1 MX | 🔒 Secure |