sysapp.dk is a .dk domain served by 3 nameservers (dns0.kyber.dk, dns1.kyber.dk, dns2.kyber.dk). It was registered on 28 July 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.52.102.26 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.sysapp.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 87.52.102.26 | — | cpe.xe-0-2-0-4097.md35tfo1nqe30.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 87.48.0.0/13 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail.sysapp.dk | 87.52.102.26 | cpe.xe-0-2-0-4097.md35tfo1nqe30.dk.customer.tdc.net | AS3292 TDC Holding A/S |
| TXT Record |
|---|
| v=spf1 ip4:87.52.102.26 ~all |
| Policy | Record (sysapp.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:87.52.102.26 ~all |
| www | 87.52.102.26 (AS3292) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 0/10 · 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 | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026040429 |
| Primary NS (MNAME) | dns0.kyber.dk |
| Responsible (RNAME) | admin@mail.adr |
| Refresh | 10800s |
| Retry | 1800s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2022-07-28 |
| Expires | 2027-07-27 (282d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 09:19:29 | 1238ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 22:04:07 | 656ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-02 19:11:27 | 5011ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 18:32:05 | 1114ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 18:06:47 | 9500ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 14:41:44 | 611ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-21 20:36:26 | 1124ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-12 03:55:21 | 740ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-08 03:35:56 | 2089ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-08 03:32:16 | 1761ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 22:22:16 | 705ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-20 06:25:38 | 5564ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-13 10:59:24 | 4551ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-08 15:02:13 | 1699ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-30 11:52:29 | 8746ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-24 02:36:59 | 25977ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-17 06:49:04 | 8955ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-15 23:30:23 | 8632ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-02 16:46:12 | 2516ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 15:31:31 | 990ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-18 07:12:54 shown | 772ms | 3 NS 1 A 1 MX | 🔓 Insecure |