byggeriets-uddannelser.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 March 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.47.247.18 is hosted by One.com A/S (AS51468). 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.47.247.18 | 600s | one.com.webforward.g1i.one | AS51468 | One.com A/S | 195.47.247.0/24 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| www | 195.47.247.18 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network byggeriets-uddannelser.dk: 195.47.247.18 (AS51468) www.byggeriets-uddannelser.dk: 195.47.247.18 (AS51468) |
| 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 | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100701 |
| 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 | 2002-03-07 |
| Expires | 2027-03-31 (158d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 13:03:04 shown | 373ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 12:06:18 | 552ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 10:26:39 | 534ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 08:50:56 | 314ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 10:13:21 | 723ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-31 07:55:58 | 1756ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-24 14:37:06 | 1276ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 18:16:02 | 798ms | 2 NS 1 A 4 MX | 🔒 Secure |