jakobsen-it.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 19 May 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.189.133.236 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by mx.zoho.eu, mx2.zoho.eu 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 |
|---|---|---|---|---|---|---|---|
| 5.189.133.236 | 43200s | vmi432237.contaboserver.net | AS51167 | Contabo GmbH | 5.189.128.0/18 | 🇫🇷 France | Lauterbourg |
| TXT Record |
|---|
| v=spf1 include:zohomail.eu ~all |
| zoho-verification=zb17505089.zmverify.zoho.eu |
| Policy | Record (jakobsen-it.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:zohomail.eu ~all |
| Policy | Record (_dmarc.jakobsen-it.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | Address record (no CNAME) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| s1 | s1.domainkey.u18204379.wl130.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u18204379.wl130.sendgrid.net | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · 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 | 2026072201 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2014-05-19 |
| Expires | 2027-05-31 (221d) |
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).
| Domain | Registrar |
|---|---|
| agion.dk | Punktum dk A/S (direct) |
| billig-delebil.dk | Punktum dk A/S (direct) |
| dddb.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 01:52:07 | 547ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-28 06:19:16 | 927ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-25 05:16:23 | 1198ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-24 05:02:08 | 1413ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-23 03:45:30 | 1383ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-18 06:01:21 | 1336ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-11 10:32:41 | 1370ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-26 10:03:13 | 725ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-23 23:47:35 | 1287ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-14 11:34:52 shown | 5085ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-23 14:48:48 | 1205ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-28 12:48:16 | 688ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 10:00:47 | 1234ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 05:49:22 | 1429ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 23:12:26 | 1038ms | 2 NS 1 A 3 MX | 🔒 Secure |