businesscollegesyd.dk is a .dk domain served by 2 nameservers (ns1.esis.dk, ns2.esis.dk). It was registered on 6 October 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.19.134.87 is hosted by Syddansk Erhvervsskole Odense-Vejle (AS199374) in Denmark. Mail is handled by mxnonexistent.businesscollegesyd.dk. The zone is DNSSEC-signed and validates, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.esis.dk | 185.19.134.2 | ns1.esis.dk | AS199374 Syddansk Erhvervsskole Odense-Vejle |
| ns2.esis.dk | 185.19.134.3 | ns2.esis.dk | AS199374 Syddansk Erhvervsskole Odense-Vejle |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 185.19.134.87 |
| 🔶 Autoconfig | 185.19.134.87 |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (businesscollegesyd.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.businesscollegesyd.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r |
| www | 185.19.134.87 (AS199374) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 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 | 2020051800 |
| Primary NS (MNAME) | ns1.esis.dk |
| Responsible (RNAME) | hostmaster |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2004-10-06 |
| Expires | 2027-07-31 (281d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 23:59:33 shown | 522ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-20 03:13:15 | 820ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 23:03:29 | 723ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-11 09:49:06 | 519ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 06:51:01 | 497ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-05 05:26:57 | 1451ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-03 05:06:52 | 816ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 04:34:39 | 448ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 16:10:54 | 720ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 15:32:15 | 660ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 14:56:48 | 683ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 07:21:35 | 3287ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-14 05:09:25 | 1067ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-07 16:26:56 | 579ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 05:08:47 | 521ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 14:27:15 | 587ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-22 01:42:49 | 3878ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-21 01:33:38 | 9334ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 14:52:04 | 3540ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 04:35:28 | 2973ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-09 13:09:52 | 1714ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 05:23:16 | 3273ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-30 20:14:25 | 3553ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 19:56:18 | 9037ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-23 14:15:49 | 1152ms | 2 NS 1 A 1 MX | 🔒 Secure |