csb.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.106.67 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by csb-dk.mail.protection.outlook.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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.curanet.dk | — | — | — |
| ns2.curanet.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 94.231.106.67 | — | linux207.curanet.dk | AS48854 | team.blue Denmark A/S | 94.231.96.0/20 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| MS=ms20812909 |
| v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net ip4:212.112.156.136/32 ip4:46.32.35.60/32 ip4:95.154.48.234/32 -all |
| Policy | Record (csb.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net ip4:212.112.156.136/32 ip4:46.32.35.60/32 ip4:95.154.48.234/32 -all |
| Policy | Record (_dmarc.csb.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:rgl4v3e5q6@rua.dmarc.bluebyte.dk; ruf=mailto:rgl4v3e5q6@ruf.dmarc.bluebyte.dk; fo=0; t=n; |
| Check | Result |
|---|---|
| Status | 🧪 Testing |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | testing |
| Policy ID | 20240613085803121150 |
| max_age | 86400s |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:rgl4v3e5q6@tls.dmarc.bluebyte.dk |
| www | 94.231.106.67 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-csb-dk._domainkey.csbisland.onmicrosoft.com | 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: 2/10 · 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 | 2026042701 |
| Primary NS (MNAME) | ns1.curanet.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 14:28:18 | 1259ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 17:20:56 | 1032ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-08 20:38:53 | 1051ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 17:24:17 | 1373ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 01:17:08 | 1098ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 02:08:48 | 1069ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 05:10:42 | 1176ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 16:02:26 | 1143ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 17:16:40 | 994ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 23:06:41 shown | 1908ms | 2 NS 1 A 1 MX | 🔒 Secure |