rsbolig.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.64.13 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by rsbolig-dk.mx2.comendosystems.net, rsbolig-dk.mx1.comendosystems.com. 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 |
|---|---|---|---|---|---|---|---|
| 20.50.64.13 | — | — | AS8075 | Microsoft Corporation | 20.48.0.0/12 | 🇮🇪 Ireland | Dublin |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| TXT Record |
|---|
| _globalsign-domain-verification=r177aBWNXc9hPiLZY7ss-YHBudLUU2DfJ-iZKSicOi |
| duo_sso_verification=3b53CysgVq0WKcG0uWaDZkNiVkkzpAcfwbDs5vwSCVjfhn9qmtzA13EQo6KaGzf4 |
| rsbolig-umbracosite.azurewebsites.net |
| v=spf1 ip4:80.160.70.0/28 a:mail.rsbolig.dk include:spf.protection.outlook.com include:_spf.stejtech.net include:sendgrid.net include:_spf.centerasecurity.dk -all |
| Policy | Record (rsbolig.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:80.160.70.0/28 a:mail.rsbolig.dk include:spf.protection.outlook.com include:_spf.stejtech.net include:sendgrid.net include:_spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.rsbolig.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:6a3242e6c0e0c@dmarc-dk.centerasecurity.com; |
| www | 20.50.64.13 (AS8075) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u3755192.wl193.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u3755192.wl193.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: 9/10 · policy: -all
| 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 | 2026061701 |
| Primary NS (MNAME) | ns1.eurodns.com |
| Responsible (RNAME) | hostmaster@eurodns.com |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 04:30:01 | 834ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-30 20:59:14 | 712ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-29 19:32:53 | 723ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-24 01:56:24 | 783ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-20 02:42:07 | 778ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-08-27 19:41:44 | 914ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-27 04:19:44 | 803ms | 4 NS 1 A 3 MX | 🔓 Insecure |
| 2026-06-21 23:56:44 | 1114ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 07:01:26 shown | 877ms | 4 NS 1 A 2 MX | 🔓 Insecure |