jacobolsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 May 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.47.252.189 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by in1-smtp.messagingengine.com, in2-smtp.messagingengine.com. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 78.47.252.189 | 3600s | static.189.252.47.78.clients.your-server.de | AS24940 | Hetzner Online GmbH | 78.46.0.0/15 | 🇩🇪 Germany | Nuremberg |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 78.47.252.189 |
| 🔶 Autoconfig | 78.47.252.189 |
| TXT Record |
|---|
| v=spf1 include:spf.messagingengine.com ?all |
| Policy | Record (jacobolsen.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:spf.messagingengine.com ?all |
| www | 78.47.252.189 (AS24940) (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: 1/10 · policy: ?all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061201 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2006-05-22 |
| Expires | 2027-05-31 (224d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 04:05:34 | 782ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-16 05:07:19 | 1237ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-12 19:55:56 | 1574ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-18 12:59:48 | 1294ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-16 06:06:44 | 3293ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 18:31:42 shown | 2623ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-22 15:05:24 | 1108ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 18:56:06 | 1416ms | 2 NS 1 A 2 MX | 🔒 Secure |