businessschool.dk is a .dk domain served by 2 nameservers (ns1.cbs.dk, ns2.cbs.dk). It was registered on 23 April 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 130.226.47.135 is hosted by IDDQD-AS (AS1835) in Denmark. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 130.226.47.135 | 86400s | ilex.cbs.dk | AS1835 | IDDQD-AS | 130.226.0.0/16 | 🇩🇰 Denmark | Odense |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (businessschool.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| www CNAME | www.cbs.dk (all on cbs.dk) → 130.226.47.57 (AS1835) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 |
DNS lookups: 0/10 · 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 | 2017113117 |
| Primary NS (MNAME) | ns1.cbs.dk |
| Responsible (RNAME) | DNS@cbs.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-04-23 |
| Expires | 2027-04-30 (195d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 08:13:20 shown | 315ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-09 23:51:20 | 4156ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-06 21:30:59 | 347ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-30 19:34:13 | 505ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-29 19:26:01 | 434ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-27 17:02:21 | 444ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 16:09:14 | 3212ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-13 05:43:25 | 530ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-11 17:44:11 | 449ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-06 16:15:18 | 493ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-25 09:57:27 | 8379ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-22 05:19:58 | 7459ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-16 02:31:35 | 614ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-14 20:52:54 | 2424ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-07 17:12:17 | 498ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-31 14:47:31 | 938ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-26 23:39:59 | 16504ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-21 06:28:53 | 630ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-18 23:05:23 | 8507ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-15 19:45:02 | 8514ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-08 20:04:46 | 861ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-03 12:06:51 | 3272ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-23 17:27:26 | 509ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-21 00:41:51 | 884ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 17:50:24 | 447ms | 2 NS 1 A 0 MX | 🔒 Secure |