z-byg.dk

📜 Historical scan 2026-06-25 17:41:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

z-byg.dk is a .dk domain served by 2 nameservers (ns1.dnsserver.dk, ns2.dnsserver.dk). It was registered on 29 March 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.8.37.86 is hosted by Norlys Telco A/S (AS3308) in Denmark. The zone is not DNSSEC-signed, has no 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#

2 records 271ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnsserver.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dnsserver.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 212ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.37.86	10800s	—	AS3308	Norlys Telco A/S	193.8.36.0/23	🇩🇰 Denmark	Ølstykke

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 430ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (z-byg.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-08 03:19:33

www	193.8.37.86 (AS3308) (address records, no CNAME)
www vs bare domain	Same network z-byg.dk: 193.8.37.86 (AS3308) www.z-byg.dk: 193.8.37.86 (AS3308)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

332ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

260ms

Field	Value
Serial	2025122901
Primary NS (MNAME)	ns1.dnsserver.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-06 13:38:18

Field	Value
Registrar	Simply.com A/S
Registered	2024-03-29
Expires	2027-03-28 (152d)

📋 WHOIS#

⏱️ Lookup Timing#

271ms

212ms

276ms

AAAA

245ms

TXT

430ms

CAA

240ms

HTTPS

239ms

TLSA

273ms

SOA

260ms

MTA-STS

268ms

DNSSEC

332ms

SRV

260ms

Total

1349ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 17:56:08	314ms	2 NS 1 A 0 MX	🔓 Insecure
2026-09-29 23:23:48	419ms	2 NS 1 A 0 MX	🔓 Insecure
2026-09-24 09:22:15	449ms	2 NS 1 A 0 MX	🔓 Insecure
2026-09-14 15:54:32	496ms	2 NS 1 A 0 MX	🔓 Insecure
2026-06-25 17:41:53 shown	1349ms	2 NS 1 A 0 MX	🔓 Insecure
2026-06-18 05:35:15	585ms	2 NS 1 A 0 MX	🔓 Insecure