jc-byg.dk DNS records

🖥️ Nameservers5 records 119ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.gigahost.dk	46.183.139.31	ns1.gigahost.dk	AS47292 Sentia Denmark A/S
ns2.gigahost.dk	46.183.139.222	web22.gigahost.dk	AS47292 Sentia Denmark A/S
ns3.gigahost.dk	71.19.249.71	ns3.gigahost.dk	AS11831 eSecureData
ns4.gigahost.dk	51.79.215.130	ns4.gigahost.dk	AS16276 OVH SAS
ns5.gigahost.dk	77.74.192.83	ns5.gigahost.dk	AS42831 UK Dedicated Servers Limited

🌍 A Records1 records 112ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.183.138.100	3600s	—	AS47292	Sentia Denmark A/S	46.183.138.0/23	🇩🇰 Denmark	—

📧 MX Records3 records 123ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.gigahost.dk	46.183.139.11	mx1.gigahost.dk	AS47292 Sentia Denmark A/S
10	3600s	mx2.gigahost.dk	46.183.139.12	mx2.gigahost.dk	AS47292 Sentia Denmark A/S
10	3600s	mx3.gigahost.dk	46.183.139.13	mx3.gigahost.dk	AS47292 Sentia Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	jc-byg.dk → 46.183.138.100
🔶 Autoconfig	jc-byg.dk → 46.183.138.100

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 226ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	autodiscover.gigahost.dk

📝 TXT Records2 records 253ms

TXT Record
spf2.0/pra
v=spf1 mx include:spf.gigahost.dk -all

✉️ SPF

Policy	Record (jc-byg.dk)
-all (hard fail)	v=spf1 mx include:spf.gigahost.dk -all

📨 DMARC

Policy	Record (_dmarc.jc-byg.dk)
p=reject	v=DMARC1; p=reject;

📬 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.jc-byg.dk	jc-byg.dk

🔗 TLSA / DANE

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

🔐 DNSSEC276ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090301
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@jc-byg.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

119ms

A

112ms

MX

123ms

AAAA

72ms

TXT

253ms

CAA

235ms

HTTPS

110ms

TLSA

554ms

SOA

0ms

MTA-STS

115ms

DNSSEC

276ms

SRV

226ms

Total

1636ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-06 00:19:22	1636ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-27 02:08:25	767ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-20 04:12:58	1575ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-13 21:14:15	1009ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-06 18:11:25	9006ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-01 09:31:47	1212ms	5 NS 1 A 3 MX	❓ Unknown	View
2026-07-23 13:39:46	1268ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-17 08:39:09	1114ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-11 03:22:44	9762ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-03 12:12:18	3804ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-28 03:01:43	2138ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-25 02:45:11	1047ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-19 16:57:34	1639ms	5 NS 1 A 3 MX	⚠️ Bogus	View
2026-06-17 13:47:05	2753ms	5 NS 1 A 3 MX	🔓 Insecure	View