fern.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 April 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.oz6bl.dk, hamgate.apana.org.au. 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.
| TXT Record |
|---|
| brevo-code:06b354f02ce99e6195d74834754d936e |
| v=spf1 mx -alll |
| Policy | Record (fern.dk) |
|---|---|
| no all — incomplete SPF | v=spf1 mx -alll |
| Policy | Record (_dmarc.fern.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; adkim=s; ruf=mailto:postmaster@fern.dk; |
| www | 212.237.182.231 2a06:4000:8073:19::5 (AS204151) (address records, no CNAME) |
| www vs bare domain | Same network fern.dk: 212.237.182.231 2a06:4000:8073:19::5 (AS204151) www.fern.dk: 212.237.182.231 2a06:4000:8073:19::5 (AS204151) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | 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: none
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026050702 |
| 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 | 1998-04-03 |
| Expires | 2027-06-30 (255d) |
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).
| Domain | Registrar |
|---|---|
| amsat.dk | ONE.COM A/S |
| bentbagger.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 10:32:38 | 19136ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-22 07:55:00 | 7017ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-20 07:57:09 | 847ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-03 02:10:49 | 7816ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-27 22:59:41 shown | 5693ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-13 22:59:18 | 10819ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-17 10:08:20 | 4633ms | 2 NS 0 A 2 MX | 🔒 Secure |