fluch.dk is a .dk domain served by 2 nameservers (ns1.world4you.at, ns2.world4you.at). It was registered on 28 January 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.19.159.38 is hosted by IONOS SE (AS8560) in Austria. Mail is handled by mail.fluch.dk. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 81.19.159.38 | 3600s | www38sni.world4you.com | AS8560 | IONOS SE | 81.19.144.0/20 | 🇦🇹 Austria | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mail.fluch.dk | 81.19.149.38 | mail17.world4you.com | AS8560 IONOS SE |
| TXT Record |
|---|
| v=spf1 mx include:spf.w4ymail.at -all |
| Policy | Record (fluch.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:spf.w4ymail.at -all |
| Policy | Record (_dmarc.fluch.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1;p=none; |
| www | 81.19.159.38 (AS8560) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 21 iterations · 24-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025022436 |
| 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 | 2022-01-28 |
| Expires | 2027-01-27 (101d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 17:00:21 shown | 740ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-09 00:34:49 | 1606ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-31 19:40:35 | 2746ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-30 02:52:43 | 849ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 20:09:26 | 1171ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 09:49:55 | 672ms | 2 NS 1 A 1 MX | 🔓 Insecure |