krosfou.dk is a .dk domain served by 2 nameservers (bruce.ns.cloudflare.com, sunny.ns.cloudflare.com). It was registered on 30 June 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.21.142 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx4.mail.ovh.net, mx3.mail.ovh.net. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.21.142 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.199.29 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1 | 300s | mx4.mail.ovh.net | 178.32.124.207 | mx4.mail.ovh.net | AS16276 OVH SAS |
| 10 | 300s | mx3.mail.ovh.net | 91.121.53.175 | mx3.mail.ovh.net | AS16276 OVH SAS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mailconfig.ovh.net → 213.186.33.5 |
| 🔶 Autoconfig | mailconfig.ovh.net → 213.186.33.5 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::ac43:c71d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::6815:158e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.21.142,172.67.199.29 ech=AEX+DQBBugAgACCn1R8fSm59KslxYzTc8XhQZFLqU5RLYGsYztQqgHu2WAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:c71d,2606:4700:3034::6815:158e |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | mailconfig.ovh.net |
| _imaps._tcp | 0 | 0 | 993 | ssl0.ovh.net |
| TXT Record |
|---|
| 1|www.krosfou.dk |
| www | 104.21.21.142 172.67.199.29 2606:4700:3033::ac43:c71d 2606:4700:3034::6815:158e (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.krosfou.dk | 74t37ClBOu5mbVktScZjO0oQWR10REPE0DzoStnC-UM |
| TXT | _acme-challenge.krosfou.dk | kos6DrjEnvLgYyOjN5RfrXaSw60EQajhVjSRNmYf6H4 |
| 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 | 2415578389 |
| Primary NS (MNAME) | bruce.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Ovh |
| Registered | 2021-06-30 |
| Expires | 2027-06-30 (252d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 11:54:06 | 797ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-28 11:23:37 | 892ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-27 11:15:09 | 731ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-23 18:45:47 shown | 961ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-06 16:36:24 | 1732ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-08 09:11:36 | 1228ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-24 15:52:41 | 1185ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-28 18:21:56 | 925ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-18 05:31:55 | 1404ms | 2 NS 2 A 2 MX | 🔓 Insecure |