rsf1935.dk
Last scanned: 2026-06-17 13:16:56  ·  1664ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   135ms
NameserverIP addressesPTRASN / ISP
dns-e.duelhost.dk 49.12.84.170 cde4.duelhost.dk AS24940 Hetzner Online GmbH
dns-f.duelhost.dk 195.201.247.57 dns-f.duelhost.dk AS24940 Hetzner Online GmbH
🌍 A Records1 records   135ms
IPTTLPTRASNISP / OrgCIDRCountryCity
198.202.211.1 — — AS209242 Cloudflare London, LLC 198.202.211.0/24 🇺🇸 United States —
📧 MX Records1 records   98ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mail.rsf1935.dk 49.12.84.170 cde4.duelhost.dk AS24940 Hetzner Online GmbH
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   406ms
TXT Record
v=spf1 a mx include:relay.mailchannels.net -all
✉️ SPF
PolicyRecord (rsf1935.dk)
-all (hard fail) v=spf1 a mx include:relay.mailchannels.net -all
📨 DMARC
PolicyRecord (_dmarc.rsf1935.dk)
p=none (monitor only) v=DMARC1; p=none; sp=none
📬 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)
🔐 DNSSEC300ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA104ms
FieldValue
Serial2026020206
Primary NS (MNAME)dns-e.duelhost.dk
Responsible (RNAME)hostmaster@rsf1935.dk
Refresh3600s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
135ms
A
135ms
MX
98ms
AAAA
146ms
TXT
406ms
CAA
110ms
HTTPS
101ms
TLSA
315ms
SOA
104ms
MTA-STS
338ms
DNSSEC
300ms
SRV
0ms
Total
1664ms
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