jdku.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.9.203.147 is hosted by UpCloud Ltd (AS202053) in Germany. Mail is handled by mx1.pub.mailpod5-cph3.one.com, mx2.pub.mailpod5-cph3.one.com and 1 more. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 85.9.203.147 | 3600s | 85-9-203-147.de-fra1.upcloud.host | AS202053 | UpCloud Ltd | 85.9.200.0/21 | 🇩🇪 Germany | Frankfurt am Main |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod5-cph3.one.com | 185.164.14.54 | mx1.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod5-cph3.one.com | 185.164.14.55 | mx2.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod5-cph3.one.com | 185.164.14.56 | mx3.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 46.30.213.17 |
| 🔶 Autoconfig | 46.30.213.17 |
| TXT Record |
|---|
| v=spf1 a mx include:_custspf.one.com ~all |
| Policy | Record (jdku.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx include:_custspf.one.com ~all |
| Policy | Record (_dmarc.jdku.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| www | 85.9.203.147 (AS202053) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | D8DFA3FF2BFC8029FC54CAE58297D988… |
| SMTP _25._tcp.mx1.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | 63EF463E384F266BA4F41EE149A2C594… |
| SMTP _25._tcp.mx2.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | 63EF463E384F266BA4F41EE149A2C594… |
| SMTP _25._tcp.mx2.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | D8DFA3FF2BFC8029FC54CAE58297D988… |
| SMTP _25._tcp.mx3.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | 63EF463E384F266BA4F41EE149A2C594… |
| SMTP _25._tcp.mx3.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | D8DFA3FF2BFC8029FC54CAE58297D988… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026062004 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-10 15:40:51 | 8639ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-28 07:16:49 | 828ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-20 20:17:52 | 1209ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-24 16:17:45 | 4878ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-22 12:57:30 shown | 5217ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-23 16:43:58 | 863ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 20:03:57 | 1082ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 05:42:47 | 1141ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 23:17:58 | 992ms | 2 NS 1 A 3 MX | 🔒 Secure |