byf.dk is a .dk domain served by 2 nameservers (ns6.sitnet.dk, ns7.sitnet.dk). It was registered on 8 March 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.50.36.76 is hosted by KMD A/S (AS6834) in Denmark. 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 |
|---|---|---|---|
| ns6.sitnet.dk | 107.162.234.197 2604:e180:1071::3:1 |
— — |
AS55002 F5, Inc. AS55002 F5, Inc. |
| ns7.sitnet.dk | 107.162.176.221 2604:e180:1071::ffff:6ba2:b0dd |
— — |
AS55002 F5, Inc. AS55002 F5, Inc. |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.50.36.76 | 3600s | — | AS6834 | KMD A/S | 195.50.32.0/19 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (byf.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.byf.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:tcod1eh2@ag.eu.dmarcadvisor.com; |
| www CNAME | byf.dk (all on byf.dk) → 195.50.36.76 (AS6834) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 7-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · 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 | 5145 |
| Primary NS (MNAME) | ns6.sitnet.dk |
| Responsible (RNAME) | hostmaster@statens-it.dk |
| Refresh | 10800s |
| Retry | 1080s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2001-03-08 |
| Expires | 2028-03-31 (530d) |
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 |
|---|---|---|---|
| 2026-10-17 01:44:48 | 1028ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-16 01:25:04 | 9921ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-15 00:42:20 | 1828ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-14 00:05:44 | 1498ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-12 21:42:59 | 18119ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-11 20:10:19 | 18465ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-10 18:14:59 | 3202ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-09 17:03:12 | 9883ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-08 15:04:32 | 11660ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-07 14:49:05 | 5341ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-07 02:20:10 shown | 2666ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-06 01:00:25 | 18575ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-05 00:57:52 | 1455ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-04 00:43:37 | 1116ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-03 01:18:28 | 5303ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-02 01:17:46 | 5080ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-01 01:07:51 | 17449ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-30 00:58:57 | 1151ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-29 00:46:11 | 1433ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-28 00:18:55 | 17324ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-26 23:54:23 | 17369ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-25 23:24:00 | 17426ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-24 23:04:00 | 17360ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 22:40:42 | 1323ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-22 18:15:22 | 18583ms | 2 NS 1 A 0 MX | 🔒 Secure |