c-fitness.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 18 February 2008 (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 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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 46.183.138.100 | 3600s | — | 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 | CNAME / IP |
|---|---|
| 🔷 Autodiscover | c-fitness.dk → 46.183.138.100 |
| 🔶 Autoconfig | c-fitness.dk → 46.183.138.100 |
| 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-fitness.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:spf.gigahost.dk -all |
| Policy | Record (_dmarc.c-fitness.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www CNAME | c-fitness.dk (all on c-fitness.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u1018819.wl070.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u1018819.wl070.sendgrid.net | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.c-fitness.dk | c-fitness.dk |
| 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 | 2026102201 |
| Primary NS (MNAME) | ns1.gigahost.dk |
| Responsible (RNAME) | hostmaster@c-fitness.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2008-02-18 |
| Expires | 2027-02-28 (126d) |
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 |
|---|---|---|---|
| 2026-10-24 01:35:18 shown | 748ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-21 06:30:53 | 1135ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-16 23:31:52 | 882ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-08 06:24:35 | 2821ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-01 02:39:00 | 1079ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-26 01:29:45 | 910ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-24 13:19:35 | 753ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-20 08:35:21 | 933ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-10 07:30:44 | 1879ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-08 14:46:10 | 992ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-27 07:45:39 | 944ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-20 21:44:19 | 1081ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-13 11:45:39 | 2910ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-09 17:30:19 | 9978ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-01 11:10:54 | 1343ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-23 19:58:38 | 9708ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-16 12:58:46 | 9139ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-14 22:37:06 | 8813ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-07-03 15:42:31 | 1823ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-28 13:25:10 | 2159ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-25 02:32:51 | 1001ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-23 20:15:32 | 1158ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 00:31:07 | 899ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 05:08:36 | 1502ms | 5 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-16 18:43:25 | 461ms | 5 NS 1 A 3 MX | 🔓 Insecure |