rubico.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.26 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by smtp.google.com. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 94.231.103.26 | — | linux55.unoeuro.com | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| google-site-verification=-B3qQeZtG2NGTdaDNxUiSJNoDu5OGQzO9yX-WTQbJuo |
| mailerlite-domain-verification=5f2b5edc6d8c042f7ac08f8146aeb7937ff05d36 |
| v=spf1 include:_spf.mlsend.com include:_spf.mlsend.com include:spf.simply.com include:_spf.google.com -all |
| Policy | Record (rubico.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.mlsend.com include:_spf.mlsend.com include:spf.simply.com include:_spf.google.com -all |
| Policy | Record (_dmarc.rubico.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com; |
| www | 94.231.103.26 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~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: 4/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026032303 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 09:51:12 | 1493ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 07:48:58 | 553ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 22:36:43 | 658ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 22:02:57 | 1785ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 17:45:24 | 1175ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:05:39 shown | 1416ms | 3 NS 1 A 1 MX | 🔒 Secure |