trackjack.dk is a .dk domain served by 3 nameservers (ns3.firstfind.nl, ns4.firstfind.nl, ns5.firstfind.net). It was registered on 26 February 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.157.87.204 is hosted by Your Hosting B.V. (AS48635) in The Netherlands. Mail is handled by server40.firstfind.nl. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.157.87.204 | 14400s | redirect.yourhosting.nl | AS48635 | Your Hosting B.V. | 5.157.80.0/21 | 🇳🇱 The Netherlands | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 14400s | server40.firstfind.nl | 5.157.84.149 | server40.firstfind.nl | AS48635 Your Hosting B.V. |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 5.157.87.204 |
| 🔶 Autoconfig | 5.157.87.204 |
| www CNAME | trackjack.dk (all on trackjack.dk) → 5.157.87.204 (AS48635) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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.
| 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 | 2020063001 |
| Primary NS (MNAME) | ns3.firstfind.nl |
| Responsible (RNAME) | hostmaster@firstfind.nl |
| Refresh | 16384s |
| Retry | 2048s |
| Expire | 1048576s |
| Minimum (neg-cache TTL) | 14400s |
| Field | Value |
|---|---|
| Registrar | Realtime Register B.V. |
| Registered | 2010-02-26 |
| Expires | 2027-02-28 (133d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 10:22:15 shown | 2046ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 05:07:59 | 4461ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 08:33:32 | 3726ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-16 22:47:05 | 9449ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-01 05:44:30 | 3531ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 09:02:13 | 2867ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 00:55:25 | 9707ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 14:32:12 | 835ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 02:06:14 | 1274ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 06:09:15 | 589ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 18:52:49 | 2559ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 12:11:32 | 1226ms | 3 NS 1 A 1 MX | 🔓 Insecure |