j-byg.dk is a .dk domain served by 3 nameservers (ns1.scf.dk, ns2.scf.dk, ns3.scf.dk). It was registered on 21 May 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by outlook.cloud-mail.dk. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|
| ns1.scf.dk | 80.208.56.222 | outlook.saass.dk | AS44869 FIBIA P/S |
| ns2.scf.dk | 5.103.184.171 | outlook.cloud-mail.dk | AS44869 FIBIA P/S |
| ns3.scf.dk | 5.103.12.92 | 5.103.12.92.static.fibianet.dk | AS44869 FIBIA P/S |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | outlook.cloud-mail.dk | 5.103.184.171 | outlook.cloud-mail.dk | AS44869 FIBIA P/S |
| TXT Record |
|---|
| v=spf1 ip:5.103.12.90/32 ip4:80.208.56.222/32 ip4:5.103.184.171/32 a:outlook.cloud-mail.dk -all |
| Policy | Record (j-byg.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip:5.103.12.90/32 ip4:80.208.56.222/32 ip4:5.103.184.171/32 a:outlook.cloud-mail.dk -all |
| Policy | Record (_dmarc.j-byg.dk) |
|---|---|
| p=quarantine | v=DMARC1;p=quarantine;sp=reject;pct=100;ruf=mailto:hostmaster@saass.dk |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves j-byg.dk: no address www.j-byg.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 14 |
| Primary NS (MNAME) | ns1.scf.dk |
| Responsible (RNAME) | hostmaster |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2024-05-21 |
| Expires | 2027-05-20 (210d) |
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 |
|---|---|
| cloud-mail.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 09:33:56 | 5033ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-12 01:57:55 | 2989ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-11 01:08:21 | 7070ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-07 19:53:02 | 2969ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-06 19:51:19 | 2621ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-05 16:32:38 | 1841ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-04 16:29:35 | 6341ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-30 16:03:32 | 2963ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-29 15:50:56 | 2925ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-27 15:34:15 | 3025ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-25 15:13:22 | 5472ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-23 14:21:56 | 9621ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-20 14:55:23 | 4944ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-04 19:52:59 | 7478ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-29 07:45:39 | 6459ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-25 11:17:44 | 8352ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-24 18:16:18 | 10219ms | 3 NS 0 A 1 MX | ❓ Unknown |
| 2026-08-22 13:37:44 | 13426ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-19 08:56:46 | 10457ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-16 04:02:16 | 8696ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-14 22:04:04 | 8007ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-09 15:28:52 | 10953ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-27 16:11:23 | 3884ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-26 16:00:45 | 16423ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-22 08:16:39 | 10590ms | 3 NS 0 A 1 MX | 🔓 Insecure |