rønn.dk is a .dk domain served by 3 nameservers (ns.d4es.dk, ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.7.138.54 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mail.d4es.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 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 |
|---|---|---|---|---|---|---|---|
| 81.7.138.54 | — | — | AS47292 | Sentia Denmark A/S | 81.7.136.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail.d4es.dk | 81.7.138.35 | mail.d4.dk | AS47292 Sentia Denmark A/S |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (rønn.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| www CNAME | xn--rnn-0na.dk (all on xn--rnn-0na.dk) → 81.7.138.54 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxdomain |
| Field | Value |
|---|---|
| Serial | 2017081715 |
| Primary NS (MNAME) | ns.d4es.dk |
| Responsible (RNAME) | hostmaster@d4.dk |
| Refresh | 1200s |
| Retry | 600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-08-24 01:39:30 | 16177ms | 3 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-24 05:04:00 | 923ms | 3 NS 1 A 1 MX | ❓ Unknown |
| 2026-06-23 09:01:09 | 522ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 11:37:19 shown | 905ms | 3 NS 1 A 1 MX | 🔒 Secure |