sbusk.dk is a .dk domain served by 2 nameservers (dion.ns.cloudflare.com, gina.ns.cloudflare.com). It was registered on 13 February 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 51.89.21.191 is hosted by OVH SAS (AS16276) in United Kingdom. Mail is handled by sbusk-dk.mail.protection.outlook.com. 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 |
|---|---|---|---|---|---|---|---|
| 51.89.21.191 | 300s | cp.webits.dk | AS16276 | OVH SAS | 51.89.0.0/16 | 🇬🇧 United Kingdom | London |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| TXT Record |
|---|
| google-site-verification=9uUop502ZeuRcBW0cW5XC5O595D_vTIIW2VN7vqNfJY |
| google-site-verification=ARFOoPli1BR2vIU4jAspPuWKRYXW0SW0aC2HKLUq3k4 |
| MS=ms59335637 |
| MS=ms60979492 |
| v=spf1 +a +mx +a:cp.webits.dk include:spf.protection.outlook.com include:relay.mailchannels.net -all |
| Policy | Record (sbusk.dk) |
|---|---|
| -all (hard fail) | v=spf1 +a +mx +a:cp.webits.dk include:spf.protection.outlook.com include:relay.mailchannels.net -all |
| Policy | Record (_dmarc.sbusk.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc@sbusk.dk; ruf=mailto:dmarc@sbusk.dk |
| www CNAME | sbusk.dk (all on sbusk.dk) → 51.89.21.191 (AS16276) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-sbusk-dk._domainkey.sbusk.onmicrosoft.com | 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: 5/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.sbusk.dk | _j634CmC8Cy9o8NmY7hwMuoQtqdoG4FgKmC50krHviE |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416597152 |
| Primary NS (MNAME) | dion.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | CURANET A/S |
| Registered | 2016-02-13 |
| Expires | 2027-02-28 (133d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 12:52:08 shown | 1357ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-02 12:31:33 | 1230ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 11:28:08 | 949ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-19 07:11:30 | 1516ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-13 10:15:33 | 1448ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-05 20:10:55 | 699ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-05 07:32:31 | 1353ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 12:08:15 | 4664ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-24 23:27:22 | 1081ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-17 16:27:42 | 8552ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-01 02:11:26 | 1572ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-24 14:34:44 | 1292ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-16 06:43:00 | 1312ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-07-08 21:24:46 | 1177ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-07-03 14:09:39 | 9330ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 20:22:28 | 4368ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 09:19:40 | 1175ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 01:26:53 | 1421ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 15:18:15 | 2575ms | 2 NS 1 A 1 MX | 🔓 Insecure |