csb-system.dk
Last scanned: 2026-08-25 15:36:49  ·  844ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   39ms
NameserverIP addressesPTRASN / ISP
pns.dtag.de 194.25.0.125
2003:40:8000::100		 pns.dtag.de
pns.dtag.de		 AS3320 Deutsche Telekom AG
AS3320 Deutsche Telekom AG
secondary006.dtag.net 195.244.245.25
2a00:fa8:3:0:100:0:6:1		 secondary006.dtag.net
secondary006.dtag.net		 AS5605 NetUSE AG
AS5605 NetUSE AG
🌍 A Records
🌍
No A records found
📧 MX Records1 records   82ms
PriorityTTLMail ServerIP addressesPTRASN
100 3600s mail.csb-system.de 217.7.0.115
217.7.0.115		 mail02.csb.com
mail02.csb.de		 AS3320 Deutsche Telekom AG
AS3320 Deutsche Telekom AG
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records
📝
No TXT records found
✉️ SPF
✗ No SPF record — mail spoofing not restricted
📨 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)
🔐 DNSSEC100ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2025120802
Primary NS (MNAME)srvdns1
Responsible (RNAME)webmaster@csb.de
Refresh28800s
Retry7200s
Expire604800s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
39ms
A
79ms
MX
82ms
AAAA
50ms
TXT
282ms
CAA
46ms
HTTPS
51ms
TLSA
164ms
SOA
0ms
MTA-STS
104ms
DNSSEC
100ms
SRV
98ms
Total
844ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 15:36:49 844ms 2 NS 0 A 1 MX 🔓 Insecure View
2026-06-19 06:32:08 3749ms 2 NS 0 A 1 MX 🔓 Insecure View
2026-06-19 04:29:56 1013ms 2 NS 0 A 1 MX 🔓 Insecure View
2026-06-16 23:06:23 2576ms 2 NS 0 A 1 MX 🔓 Insecure View
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