c-on.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 5 February 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.183.139.219 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mx1.gigahost.dk, mx2.gigahost.dk and 1 more. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.183.139.219 | 3600s | web19.gigahost.dk | AS47292 | Sentia Denmark A/S | 46.183.138.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.gigahost.dk | 46.183.139.11 | mx1.gigahost.dk | AS47292 Sentia Denmark A/S |
| 10 | 3600s | mx2.gigahost.dk | 46.183.139.12 | mx2.gigahost.dk | AS47292 Sentia Denmark A/S |
| 10 | 3600s | mx3.gigahost.dk | 46.183.139.13 | mx3.gigahost.dk | AS47292 Sentia Denmark A/S |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | autodiscover.gigahost.dk |
| TXT Record |
|---|
| spf2.0/pra |
| v=spf1 mx include:spf.gigahost.dk -all |
| Policy | Record (c-on.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:spf.gigahost.dk -all |
| Policy | Record (_dmarc.c-on.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| www CNAME | c-on.dk (all on c-on.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 2/10 · 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 | 2026070201 |
| Primary NS (MNAME) | ns1.gigahost.dk |
| Responsible (RNAME) | hostmaster@c-on.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | GIGAHOST ApS |
| Registered | 2005-02-05 |
| Expires | 2027-02-28 (132d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 08:03:24 | 2912ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-08 14:03:13 | 816ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-07 23:34:54 | 1050ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-01 02:21:57 | 1005ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-25 01:04:18 | 756ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-18 09:53:16 | 1356ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-05 03:11:59 | 2146ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-28 00:32:20 | 2760ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-27 07:42:09 | 798ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-26 07:40:26 | 1047ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-21 01:13:24 | 3308ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-14 05:42:12 | 3947ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-08 07:05:47 | 8936ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-30 12:23:37 | 2153ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-23 17:41:19 | 1189ms | 5 NS 1 A 3 MX | ❓ Unknown |
| 2026-07-16 10:05:41 | 1083ms | 5 NS 1 A 3 MX | ❓ Unknown |
| 2026-07-11 15:42:36 | 17130ms | 5 NS 1 A 3 MX | ❓ Unknown |
| 2026-07-03 11:22:58 shown | 844ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-26 04:18:00 | 967ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-24 06:17:39 | 734ms | 5 NS 1 A 3 MX | ❓ Unknown |
| 2026-06-18 16:14:39 | 1585ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-16 18:41:58 | 504ms | 5 NS 1 A 3 MX | ⚠️ Bogus |
| 2026-06-16 18:40:37 | 1018ms | 5 NS 1 A 3 MX | 🔓 Insecure |