j-byg.dk

📜 Historical scan 2026-10-06 19:51:19  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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.

🖥️ Nameservers#

3 records   2312ms
NameserverIP addressesPTRASN / 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

🌍 A Records#

🌍
No A records found

📧 MX Records#

1 records   43ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s outlook.cloud-mail.dk 5.103.184.171 outlook.cloud-mail.dk AS44869 FIBIA P/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records   2332ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 0 443 outlook.cloud-mail.dk

📝 TXT Records#

1 records   2267ms
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

✉️ SPF#

PolicyRecord (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

📨 DMARC#

PolicyRecord (_dmarc.j-byg.dk)
p=quarantine v=DMARC1;p=quarantine;sp=reject;pct=100;ruf=mailto:hostmaster@saass.dk

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-19 09:33:56
wwwNXDOMAIN
www vs bare domainNeither resolves
j-byg.dk: no address
www.j-byg.dk: no address
WildcardNo

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

  • error Unknown mechanism "ip:5.103.12.90/32": receivers treat the record as a permanent error

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

2060ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset

🏷️ SOA#

42ms
FieldValue
Serial13
Primary NS (MNAME)ns1.scf.dk
Responsible (RNAME)hostmaster
Refresh900s
Retry600s
Expire86400s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-17 05:08:35
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2024-05-21
Expires2027-05-20 (212d)

🔗 Same registrant#

1 domain

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).

DomainRegistrar
cloud-mail.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
2312ms
A
61ms
MX
43ms
AAAA
52ms
TXT
2267ms
CAA
50ms
HTTPS
59ms
TLSA
86ms
SOA
42ms
MTA-STS
2053ms
DNSSEC
2060ms
SRV
2332ms
Total
2621ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 shown 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
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