sempersan.dk is a .dk domain served by 2 nameservers (ns1.world4you.at, ns2.world4you.at). It was registered on 1 May 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.19.154.98 is hosted by IONOS SE (AS8560) in Austria. Mail is handled by mail.sempersan.dk. 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 |
|---|---|---|---|---|---|---|---|
| 81.19.154.98 | 3600s | redirect01.world4you.com | AS8560 | IONOS SE | 81.19.144.0/20 | 🇦🇹 Austria | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.sempersan.dk | 81.19.154.99 | mwl01.world4you.com | AS8560 IONOS SE |
| www | 81.19.154.98 (AS8560) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| 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 | 2018050101 |
| Primary NS (MNAME) | ns1.world4you.at |
| Responsible (RNAME) | hostmaster@world4you.com |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | InterNetX GmbH |
| Registered | 2018-05-01 |
| Expires | 2027-05-31 (226d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 08:30:17 shown | 872ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 04:45:33 | 831ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-20 00:27:52 | 9729ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 16:20:46 | 810ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 07:24:40 | 1178ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 13:07:22 | 577ms | 2 NS 1 A 1 MX | 🔓 Insecure |