jakobsson.dk is a .dk domain served by 2 nameservers (meadow.ns.cloudflare.com, thaddeus.ns.cloudflare.com). It was registered on 31 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by jakobsson-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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.35.202 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 1 | 100 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms41896641 |
| v=spf1 include:spf.protection.outlook.com -all |
| X6X25RjDMhKgKggvHYDgX9BEX1SS/k2RoQqQt8FqydovfYhEXv6nDXdxp3iDDojODNyZTvYtNQ0KLmFxNrCzCQ== |
| Policy | Record (jakobsson.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves jakobsson.dk: no address www.jakobsson.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2417124120 |
| Primary NS (MNAME) | meadow.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 1997-01-31 |
| Expires | 2027-03-31 (160d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 09:01:05 shown | 1685ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-11 08:41:10 | 2282ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-27 00:01:12 | 1288ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-27 01:55:57 | 3292ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-13 13:30:37 | 1344ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-01 17:18:22 | 1170ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-25 03:11:53 | 1182ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 06:50:12 | 1001ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 04:52:26 | 1167ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 07:37:39 | 14013ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-18 07:23:46 | 26119ms | 2 NS 0 A 1 MX | 🔓 Insecure |