rud-borg.dk
Last scanned: 2026-06-18 08:29:10  ·  735ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   45ms
NameserverIP addressesPTRASN / ISP
ns.nerdonline.dk 167.233.0.169 mailgw1.nerdonline.dk AS24940 Hetzner Online GmbH
ns2.nerdonline.dk 95.216.155.89 hel01.nerdonline.dk AS24940 Hetzner Online GmbH
ns3.nerdonline.dk 167.233.0.167 ns3.nerdonline.dk AS24940 Hetzner Online GmbH
🌍 A Records
🌍
No A records found
📧 MX Records2 records   41ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mx1.onlinemail.io 185.21.42.12 mx1.onlinemail.io AS48854 team.blue Denmark A/S
20 — mx2.onlinemail.io 46.36.208.16 mx2.onlinemail.io AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfigautoconfig-mf.onlinemail.io → 185.21.40.62
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   316ms
ServicePriorityWeightPortTarget
_sipfederationtls._tcp 100 1 5061 sipfed.online.lync.com
📝 TXT Records1 records   197ms
TXT Record
v=spf1 a mx include:spf.onlinemail.io ?all
✉️ SPF
PolicyRecord (rud-borg.dk)
?all (neutral) v=spf1 a mx include:spf.onlinemail.io ?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)
🔐 DNSSEC115ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA39ms
FieldValue
Serial1319013571
Primary NS (MNAME)ns.nerdonline.dk
Responsible (RNAME)hostmaster@nerdonline.dk
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)38400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
45ms
A
40ms
MX
41ms
AAAA
39ms
TXT
197ms
CAA
42ms
HTTPS
38ms
TLSA
79ms
SOA
39ms
MTA-STS
43ms
DNSSEC
115ms
SRV
316ms
Total
735ms
dhd.dk [/] search Domains, Hosts & DNS — .dk zone