f-madsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 February 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.211.38 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by fmadsen-dk0c.mail.protection.outlook.com. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.30.211.38 | — | domain-parking.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| MS=ms92197047 |
| v=msv1 t=c8df5524c0629a48ccb2349325dafb |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (f-madsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.f-madsen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:postmaster@f-madsen.dk; |
| www | 46.30.211.38 (AS51468) (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 |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-fmadsen-dk0c._domainkey.fmadsen.w-v1.dkim.mail.microsoft | RSA · ~2048 bit |
| selector2 | selector2-fmadsen-dk0c._domainkey.fmadsen.w-v1.dkim.mail.microsoft | RSA · ~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 | 2026052501 |
| 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 | 2007-02-07 |
| Expires | 2031-02-28 (1592d) |
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 |
|---|---|
| lomadsen.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 15:03:20 | 860ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 00:03:38 | 671ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 21:16:26 | 1303ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-07 07:22:07 | 1549ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 07:21:35 | 1847ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 16:04:23 | 1436ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 16:56:31 | 787ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 02:53:58 | 1643ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-22 22:58:26 | 1823ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 09:10:21 shown | 1293ms | 2 NS 1 A 1 MX | 🔒 Secure |