underudvikling.dk DNS records

🖥️ Nameservers3 records 159ms

Nameserver	IP addresses	PTR	ASN / ISP
linux3.dform.dk	2a01:4f8:1c1a:22c5::1 91.98.139.7	— linux3.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns1.dform.dk	2a01:4f8:c17:5dd1::1 88.99.33.43	ns1.dform.dk ns1.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns2.dform.dk	2a01:4f9:c010:18ac::1 65.21.180.171	ns2.dform.dk ns2.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🌍 A Records1 records 83ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.98.139.7	3600s	linux3.dform.dk	AS24940	Hetzner Online GmbH	91.98.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records1 records 85ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	3600s	mail.underudvikling.dk	2a01:4f8:1c1a:22c5::1 91.98.139.7	— linux3.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	91.98.139.7
🔶 Autoconfig	91.98.139.7

🔷 AAAA Records (IPv6)1 records 80ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:1c1a:22c5::1	3600s	—	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Nuremberg

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 631ms

TXT Record
v=spf1 a mx a:underudvikling.dk ip4:91.98.139.7 ip4:91.98.139.7 ip6:2a01:4f8:1c1a:22c5::1 ~all

✉️ SPF

Policy	Record (underudvikling.dk)
~all (soft fail)	v=spf1 a mx a:underudvikling.dk ip4:91.98.139.7 ip4:91.98.139.7 ip6:2a01:4f8:1c1a:22c5::1 ~all

📨 DMARC

Policy	Record (_dmarc.underudvikling.dk)
p=reject	v=DMARC1; p=reject; pct=100; ruf=mailto:postmaster@underudvikling.dk; rua=mailto:postmaster@underudvikling.dk

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records1 records 1222ms

Flags	Tag	Value
0	issuewild	letsencrypt.org

🔗 TLSA / DANE

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

🔐 DNSSEC271ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082800
Primary NS (MNAME)	linux3.dform.dk
Responsible (RNAME)	root@linux3.dform.dk
Refresh	3600s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

159ms

A

83ms

MX

85ms

AAAA

80ms

TXT

631ms

CAA

1222ms

HTTPS

74ms

TLSA

209ms

SOA

0ms

MTA-STS

235ms

DNSSEC

271ms

SRV

1307ms

Total

2734ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 19:42:43	2734ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-08-27 19:03:45	9870ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-08-26 10:23:07	10257ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-08-21 19:21:57	13911ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-08-18 07:52:42	13938ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-08-14 06:11:07	5531ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-08-06 17:52:06	6877ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-07-16 02:22:34	9841ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-29 02:00:28	1342ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-20 22:51:08	2325ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-20 20:18:31	1177ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 01:04:03	6412ms	3 NS 1 A 1 MX	🔓 Insecure	View