per-s.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.206.195.122 is hosted by Sinal A/S (AS39642) in Denmark. Mail is handled by mail.per-s.dk. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 5.206.195.122 | 43200s | — | AS39642 | Sinal A/S | 5.206.192.0/21 | 🇩🇰 Denmark | Esbjerg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail.per-s.dk | 5.206.195.122 | — | AS39642 Sinal A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 5.206.195.122 |
| 🔶 Autoconfig | 5.206.195.122 |
| TXT Record |
|---|
| google-site-verification=7PhrzWWn5BTfzDotZUmbd25qIkaFa3ODZa7abXgHzjA |
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (per-s.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.per-s.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:per@per-s.dk |
| www | 5.206.195.122 (AS39642) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · 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 | 2026071201 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 16:43:16 | 1295ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 00:36:43 | 770ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 07:09:47 | 1678ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-10 05:56:59 | 640ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 00:32:36 | 766ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-12 08:21:29 | 2498ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-27 21:24:36 | 4703ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-18 04:05:14 | 3038ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-12 08:57:57 shown | 4689ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 09:21:03 | 664ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 12:51:30 | 1678ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 01:51:03 | 740ms | 2 NS 1 A 1 MX | 🔒 Secure |