osi.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 April 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by .. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| www | NXDOMAIN |
| www vs bare domain | Neither resolves osi.dk: no address www.osi.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026093001 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2020-04-04 |
| Expires | 2027-04-30 (192d) |
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).
| Domain | Registrar |
|---|---|
| brm.dk | Punktum dk A/S (direct) |
| drkaos.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 03:51:03 shown | 464ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 02:19:51 | 344ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-28 08:59:25 | 473ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-22 04:28:14 | 465ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-14 14:03:16 | 501ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-30 13:52:24 | 337ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 09:57:30 | 542ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 05:57:45 | 440ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-07 21:28:30 | 4584ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-31 09:19:04 | 795ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-15 10:37:10 | 574ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-28 20:36:23 | 464ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 22:49:08 | 926ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-22 14:33:16 | 969ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 20:20:16 | 4745ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 13:03:46 | 364ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 17:08:14 | 585ms | 2 NS 0 A 0 MX | 🔒 Secure |