co2-buster.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 29 September 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 66.147.236.206 is hosted by HostRocket.com, Inc. (AS23535) in United States. 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 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 |
|---|---|---|---|---|---|---|---|
| 66.147.236.206 | 43200s | newserver.peoplesrepublicofcork.com | AS23535 | HostRocket.com, Inc. | 66.147.224.0/20 | 🇺🇸 United States | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | co2buster.dk |
| 🔶 Autoconfig | co2buster.dk |
| www CNAME | co2buster.dk (all on co2buster.dk) |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.co2-buster.dk | co2buster.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061201 |
| 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 | 2007-09-29 |
| Expires | 2027-09-30 (343d) |
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 |
|---|---|---|---|
| 2026-10-12 18:13:13 | 1299ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 21:49:59 | 1042ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 21:38:08 | 999ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-12 11:51:33 | 2192ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 07:49:50 | 941ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-11 21:32:22 | 9458ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-17 21:50:27 | 17293ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-13 03:55:51 | 2642ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-04 14:52:08 shown | 4867ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 10:50:11 | 4847ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-21 19:57:57 | 1185ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 23:10:51 | 65535ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 21:48:45 | 2912ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 21:30:18 | 607ms | 2 NS 1 A 0 MX | 🔒 Secure |