undermaster.dk
Last scanned: 2026-08-27 06:50:27  ·  766ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   51ms
NameserverIP addressesPTRASN / ISP
ns.udag.de 2001:8d8:fe:53:217:160:80:253
217.160.80.253		 ns.udag.de
ns.udag.de		 AS8560 IONOS SE
AS8560 IONOS SE
ns.udag.net 185.132.33.253
2607:f1c0:fe:53:185:132:33:253		 ns.udag.net
ns.udag.net		 AS15418 Fasthosts Internet Limited
AS15418 Fasthosts Internet Limited
ns.udag.org 185.132.34.253
2607:f1c0:fe:53:185:132:34:253		 ns.udag.org
ns.udag.org		 AS15418 Fasthosts Internet Limited
AS15418 Fasthosts Internet Limited
🌍 A Records1 records   52ms
IPTTLPTRASNISP / OrgCIDRCountryCity
89.31.143.1 316s www.udag.de AS202108 united-domains GmbH 89.31.142.0/23 🇩🇪 Germany —
📧 MX Records2 records   49ms
PriorityTTLMail ServerIP addressesPTRASN
10 14400s mx00.udag.de 62.146.106.39 mx00.udag.de AS15598 NorthC Deutschland GmbH
20 14400s mx01.udag.de 62.146.106.40 mx01.udag.de AS15598 NorthC Deutschland GmbH
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover89.31.143.1
🔶 Autoconfig89.31.143.1
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   298ms
TXT Record
v=spf1 include:_smtp.udag.de ~all
✉️ SPF
PolicyRecord (undermaster.dk)
~all (soft fail) v=spf1 include:_smtp.udag.de ~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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC89ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2023062202
Primary NS (MNAME)ns.udag.de
Responsible (RNAME)hostmaster@united-domains.de
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
51ms
A
52ms
MX
49ms
AAAA
54ms
TXT
298ms
CAA
49ms
HTTPS
58ms
TLSA
83ms
SOA
0ms
MTA-STS
100ms
DNSSEC
89ms
SRV
100ms
Total
766ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 06:50:27 766ms 3 NS 1 A 2 MX 🔓 Insecure View
2026-08-08 23:59:08 24983ms 3 NS 1 A 2 MX 🔓 Insecure View
2026-06-29 02:24:15 816ms 3 NS 1 A 2 MX 🔓 Insecure View
2026-06-26 17:03:24 770ms 3 NS 1 A 2 MX 🔓 Insecure View
2026-06-23 14:52:59 816ms 3 NS 1 A 2 MX 🔓 Insecure View
2026-06-17 12:20:37 961ms 3 NS 1 A 2 MX 🔓 Insecure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone