free-concept.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 30 December 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.66.124.107 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by web7.redhost.dk. The zone is not DNSSEC-signed, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 77.66.124.107 | 3598s | web7.redhost.dk | AS47292 | Sentia Denmark A/S | 77.66.124.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | web7.redhost.dk | 77.66.124.107 | web7.redhost.dk | AS47292 Sentia Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 77.66.124.107 |
| 🔶 Autoconfig | 77.66.124.107 |
| TXT Record |
|---|
| v=spf1 include:web7.redhost.dk -all |
| Policy | Record (free-concept.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:web7.redhost.dk -all |
| www | Address record (no CNAME) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 3/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026082301 |
| 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 | Netkant ApS |
| Registered | 2010-12-30 |
| Expires | 2026-12-31 (75d) |
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 |
|---|---|---|---|
| 2026-09-28 05:00:31 | 629ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-22 17:26:31 | 719ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-31 20:28:30 | 804ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-25 19:08:18 shown | 6630ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-24 03:55:06 | 2293ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-22 01:47:31 | 682ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-18 22:32:01 | 4696ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-04 04:24:17 | 768ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-30 00:23:42 | 712ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 17:56:48 | 682ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 21:16:28 | 575ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 18:52:39 | 2744ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 09:28:06 | 835ms | 2 NS 1 A 1 MX | 🔒 Secure |