co2iso.dk is a .dk domain served by 5 nameservers (ns1.gigahost.dk, ns2.gigahost.dk, ns3.gigahost.dk and 2 more). It was registered on 6 October 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.183.138.100 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by co2iso-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.gigahost.dk | — | — | — |
| ns2.gigahost.dk | — | — | — |
| ns3.gigahost.dk | — | — | — |
| ns4.gigahost.dk | — | — | — |
| ns5.gigahost.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.183.138.100 | — | — | AS47292 | Sentia Denmark A/S | 46.183.138.0/23 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| MS=ms38522819 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (co2iso.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.co2iso.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@co2iso.dk; fo=1; |
| www CNAME | co2iso.dk (all on co2iso.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026061101 |
| Primary NS (MNAME) | ns1.gigahost.dk |
| Responsible (RNAME) | hostmaster@co2iso.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | GIGAHOST ApS |
| Registered | 2025-10-06 |
| Expires | 2028-10-05 (714d) |
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 16:57:32 | 1528ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-15 16:10:24 | 2317ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 08:46:46 | 1485ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 06:09:22 | 1005ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 18:14:41 | 1669ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-17 21:24:40 | 1540ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-10 19:16:13 | 1866ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 16:30:54 | 1489ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 05:27:58 | 1014ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 09:46:21 | 1882ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-13 11:36:47 | 4893ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-07 07:11:34 | 2488ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-03 05:50:32 | 2731ms | 5 NS 1 A 1 MX | ❓ Unknown |
| 2026-07-23 12:47:40 | 2445ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-17 02:31:00 | 3545ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-10 00:29:03 | 1857ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 20:07:33 | 2057ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-28 01:50:33 | 1139ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 16:45:05 | 1096ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 18:40:33 | 2166ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:50:50 | 65535ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:35:33 shown | 721ms | 5 NS 1 A 1 MX | 🔓 Insecure |