ubuntubook.dk DNS records

🖥️ Nameservers5 records 188ms

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 28ms

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 176ms

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	ubuntubook.dk → 46.183.138.100
🔶 Autoconfig	ubuntubook.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 289ms

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

📝 TXT Records2 records 135ms

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

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.ubuntubook.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.ubuntubook.dk	ubuntubook.dk

🔗 TLSA / DANE

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

🔐 DNSSEC96ms

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	2026082701
Primary NS (MNAME)	ns1.gigahost.dk
Responsible (RNAME)	hostmaster@ubuntubook.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

188ms

A

28ms

MX

176ms

AAAA

176ms

TXT

135ms

CAA

47ms

HTTPS

178ms

TLSA

41ms

SOA

0ms

MTA-STS

191ms

DNSSEC

96ms

SRV

289ms

Total

799ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 17:23:43	799ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-25 07:10:33	9825ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-21 02:33:28	2406ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-14 07:03:29	5744ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-08-07 08:15:42	3349ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-30 18:10:00	1203ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-23 16:11:50	9360ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-17 13:05:34	1039ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-10 12:16:36	1134ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-07-03 13:12:13	2524ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-26 17:56:16	1132ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-20 21:11:32	1214ms	5 NS 1 A 3 MX	🔓 Insecure	View
2026-06-17 14:05:27	2786ms	5 NS 1 A 3 MX	🔓 Insecure	View