blue-heart.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 25 September 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.157 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.157 | 3600s | webcluster30.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:eb:1633:11f7:fd8d | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 77.111.240.157 2a02:2350:5:102:eb:1633:11f7:fd8d (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network blue-heart.dk: 77.111.240.157 2a02:2350:5:102:eb:1633:11f7:fd8d (AS51468) www.blue-heart.dk: 77.111.240.157 2a02:2350:5:102:eb:1633:11f7:fd8d (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 | 2026100201 |
| 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 | 2020-09-25 |
| Expires | 2027-09-30 (347d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 09:20:56 shown | 459ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 14:40:18 | 658ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 14:29:40 | 436ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 11:34:29 | 437ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-19 07:41:54 | 10832ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 06:14:40 | 845ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-02 07:51:28 | 738ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 12:28:42 | 9478ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 22:03:44 | 484ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 01:30:17 | 2575ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 15:19:24 | 2892ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 15:09:29 | 2064ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 15:00:25 | 728ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 15:00:03 | 912ms | 2 NS 1 A 4 MX | 🔒 Secure |