kuldioxid.dk is a .dk domain served by 2 nameservers (udns1.cscdns.net, udns2.cscdns.uk). It was registered on 9 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.216.134.140 is hosted by Akamai International B.V. (AS20940) in Sweden. 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.
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (kuldioxid.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.kuldioxid.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;pct=100;rua=mailto:xrdv15em@ag.eu.dmarcian.com;ruf=mailto:xrdv15em@fr.eu.dmarcian.com |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com |
| 0 | issue | letsencrypt.org |
| 0 | issue | sectigo.com |
| www CNAME | aag4.linde.com.edgekey.net (all on edgekey.net) |
| www vs bare domain | Different networks kuldioxid.dk: 80.239.254.30 95.101.133.51 (AS1299) (all like this)www.kuldioxid.dk: 2.23.172.34 2.23.172.74 (AS20940) |
| Wildcard | No |
DNS lookups: 0/10 · 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 | 2019111094 |
| Primary NS (MNAME) | udns1.cscdns.net |
| Responsible (RNAME) | premiumdns@support.neustar |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1296000s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 1998-02-09 |
| Expires | 2027-03-31 (162d) |
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 |
|---|---|---|---|
| 2026-09-30 17:51:56 | 506ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-25 20:20:24 | 651ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-26 10:34:40 shown | 9936ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-26 23:00:21 | 2019ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-25 09:35:32 | 2794ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-22 07:56:58 | 909ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 01:57:32 | 1358ms | 2 NS 2 A 0 MX | 🔓 Insecure |