arcas.dk is a .dk domain served by 2 nameservers (diana.ns.cloudflare.com, piers.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed but currently fails validation, has no 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx1.onlinemail.io | 185.21.42.12 | mx1.onlinemail.io | AS48854 team.blue Denmark A/S |
| 20 | 3600s | mx2.onlinemail.io | 46.36.208.16 | mx2.onlinemail.io | AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover-mf.onlinemail.io → 185.21.40.62 |
| 🔶 Autoconfig | autoconfig-mf.onlinemail.io → 185.21.40.62 |
| TXT Record |
|---|
| v=spf1 include:spf.onlinemail.io -all |
| Policy | Record (arcas.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.onlinemail.io -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves arcas.dk: no address www.arcas.dk: no address |
| Wildcard | No |
DNS lookups: 3/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'arcas.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2407189955 |
| Primary NS (MNAME) | diana.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 10:14:43 | 1526ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-10-03 15:10:55 | 639ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-10-01 04:45:11 | 751ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-09-23 16:20:11 | 560ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-08-31 19:24:59 | 1155ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-08-30 12:52:24 | 1371ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-08-18 06:57:57 | 979ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-07-02 19:47:06 | 9758ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-20 05:39:35 shown | 483ms | 2 NS 0 A 2 MX | ⚠️ Bogus |
| 2026-06-18 09:30:26 | 1305ms | 2 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-16 12:54:31 | 3066ms | 2 NS 0 A 2 MX | 🔓 Insecure |