ic-byg.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 17 September 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. We saw it become registrar-handled on 21 October 2026, when it moved from direct registration at Punktum to ONE.COM A/S. The zone is DNSSEC-signed and validates, 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.
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (ic-byg.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026091701 |
| 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 | ONE.COM A/S |
| Registered | 2016-09-17 |
| Expires | 2027-09-30 (342d) |
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 |
|---|---|
| filtersupport.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 14:12:25 | 534ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-20 09:31:47 | 944ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-17 04:03:07 | 2022ms | 2 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-10-09 10:02:07 | 878ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-28 05:10:40 | 445ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-21 10:48:34 shown | 559ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-06 02:28:29 | 1581ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-28 19:11:51 | 784ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-28 02:02:18 | 9081ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-03 12:46:54 | 580ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 00:16:29 | 1625ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-21 11:45:37 | 2301ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 14:16:34 | 703ms | 2 NS 1 A 3 MX | 🔒 Secure |