dkbu.dk is a .dk domain served by 3 nameservers (ns1.pcsys.dk, ns2.pcsys.dk, ns3.pcsys.dk). It was registered on 5 September 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 162.159.140.127 is hosted by Cloudflare, Inc. (AS13335) in United States. Mail is handled by dkbu-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.pcsys.dk | 193.186.35.2 | ts2.pcsys.dk | AS31027 GlobalConnect A/S |
| ns2.pcsys.dk | 52.178.33.97 | — | AS8075 Microsoft Corporation |
| ns3.pcsys.dk | 193.186.35.3 | ts3.pcsys.dk | AS31027 GlobalConnect A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 162.159.140.127 | 3600s | — | AS13335 | Cloudflare, Inc. | 162.159.128.0/19 | 🇺🇸 United States | — |
| 172.66.0.125 | 3600s | — | AS13335 | Cloudflare, Inc. | 172.66.0.0/22 | 🇺🇸 United States | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| TXT Record |
|---|
| MS=ms11016134 |
| v=spf1 include:spf.protection.outlook.com include:_spf.google.com ~all |
| Policy | Record (dkbu.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com include:_spf.google.com ~all |
| www CNAME | dns.umbraco.io (all on umbraco.io) |
| www vs bare domain | Same network dkbu.dk: 162.159.140.127 172.66.0.125 (AS13335) www.dkbu.dk: 162.159.140.127 172.66.0.125 2606:4700:7::7d 2a06:98c1:58::7d (AS13335) |
| Wildcard | No |
DNS lookups: 2/10 · policy: ~all
No problems found| 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 | 16 |
| Primary NS (MNAME) | ns1.pcsys.dk |
| Responsible (RNAME) | hostmaster@pcsys.dk |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2009-09-05 |
| Expires | 2027-09-30 (347d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 01:35:00 shown | 3860ms | 3 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 23:52:22 | 1077ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 03:17:44 | 1737ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-18 17:27:29 | 1398ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-15 00:46:10 | 1078ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-05 21:06:33 | 1433ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 10:11:29 | 879ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 06:49:20 | 1324ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 03:57:27 | 1212ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-04 21:04:41 | 1903ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 15:34:09 | 1275ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 03:45:37 | 653ms | 2 NS 1 A 1 MX | 🔒 Secure |