heartbook.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 February 2015 (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 mx1.improvmx.com, mx2.improvmx.com. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.47.247.18 | 3600s | one.com.webforward.g1i.one | AS51468 | One.com A/S | 195.47.247.0/24 | — | — |
| www | 195.47.247.18 (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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100901 |
| 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 | 2015-02-08 |
| Expires | 2027-02-28 (133d) |
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 |
|---|---|---|---|
| 2026-10-17 00:08:37 | 1613ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-14 21:27:25 | 522ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-09 11:04:15 shown | 2028ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-26 05:42:44 | 738ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-18 14:10:46 | 1440ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-17 08:10:52 | 6214ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-09 12:04:55 | 7187ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 18:04:38 | 698ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-23 18:55:45 | 673ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 23:24:05 | 1386ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 11:07:44 | 1177ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 11:04:51 | 1144ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 11:03:45 | 1310ms | 2 NS 1 A 2 MX | 🔒 Secure |