practitioner.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 June 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by .. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 include:sendgrid.net include:_custspf.one.com ~all |
| Policy | Record (practitioner.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:sendgrid.net include:_custspf.one.com ~all |
| Policy | Record (_dmarc.practitioner.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; rua=mailto:re+yxfrdo3z55k@dmarc.postmarkapp.com; sp=none; aspf=r; |
| www CNAME | akademiet.simplero.com (all on simplero.com) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026091701 |
| 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 | ONE.COM A/S |
| Registered | 2020-06-02 |
| Expires | 2027-06-30 (252d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-20 15:00:28 | 369ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-13 01:26:21 | 883ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-11 23:21:19 | 624ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-07 14:55:31 | 312ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-01 03:51:08 shown | 381ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 10:11:51 | 515ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-18 13:19:08 | 556ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-02 04:42:10 | 509ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-18 23:30:06 | 2699ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-14 03:01:49 | 2218ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-12 20:20:11 | 523ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-19 04:29:48 | 617ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-15 18:08:36 | 518ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-01 13:35:41 | 691ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 01:30:31 | 696ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 17:40:16 | 750ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 00:24:26 | 725ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 12:07:59 | 1344ms | 2 NS 1 A 4 MX | 🔒 Secure |