co2info.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 16 December 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. On 3 October 2026 we saw it transfer from Eurodns S.A to Statens It. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (co2info.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| www | Exists, no address |
| www vs bare domain | Neither resolves co2info.dk: no address www.co2info.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025102944 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Statens It |
| Registered | 2006-12-16 |
| Expires | 2026-12-31 (67d) |
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 04:31:24 | 1353ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-21 12:13:23 | 695ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-03 23:01:45 | 766ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-01 22:57:47 | 908ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-23 20:51:38 | 9393ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-16 00:25:32 | 1174ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-28 02:31:12 | 1800ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 01:42:44 | 880ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 07:10:46 | 624ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-10 06:20:38 | 2689ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-08 17:48:36 | 9801ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-23 04:26:45 | 1023ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-22 01:40:41 | 9672ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-20 12:38:04 | 811ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-03 18:23:53 | 1914ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-01 18:02:32 shown | 947ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-24 06:00:41 | 950ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 13:34:21 | 1099ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 14:01:46 | 649ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 22:01:05 | 30537ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-16 21:49:02 | 1225ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-16 21:30:40 | 465ms | 4 NS 0 A 0 MX | 🔒 Secure |