rsknudsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 12 May 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.206.199.141 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by smtptrap.bbsyd.dk, m.wooa.dk. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 5.206.199.141 | 43200s | m.wooa.dk | AS39642 | Sinal A/S | 5.206.192.0/21 | 🇩🇰 Denmark | Sønderborg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 43200s | smtptrap.bbsyd.dk | — | — | — |
| 10 | 3600s | m.wooa.dk | 5.206.199.141 | m.wooa.dk | AS39642 Sinal A/S |
| TXT Record |
|---|
| v=spf1 mx a:m.wooa.dk -all |
| Policy | Record (rsknudsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a:m.wooa.dk -all |
| www | 5.206.199.141 (AS39642) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101101 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2009-05-12 |
| Expires | 2027-05-31 (226d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 05:41:22 shown | 1210ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 18:26:26 | 522ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-10 22:08:07 | 733ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-02 03:57:56 | 586ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-12 11:33:14 | 958ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-18 03:33:59 | 819ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-14 01:11:25 | 671ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-01 13:18:39 | 577ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-28 15:01:08 | 636ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 22:20:21 | 4596ms | 2 NS 1 A 2 MX | 🔒 Secure |