schooltab.dk
Last scanned: 2026-08-26 23:47:01  ·  3221ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   55ms
NameserverIP addressesPTRASN / ISP
ns0.niedersachsen.com 193.30.60.250 ns0.niedersachsen.com AS3209 Vodafone GmbH
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 Records1 records   69ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.30.60.89 3600s ftp.niedersachsen.com AS3209 Vodafone GmbH 193.30.48.0/20 🇩🇪 Germany —
📧 MX Records
📧
No MX records found
🔷 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)
🔐 DNSSEC2084ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2026040856
Primary NS (MNAME)ns0.niedersachsen.com
Responsible (RNAME)dns@gutenberg-rz.de
Refresh14400s
Retry3600s
Expire1814400s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
55ms
A
69ms
MX
62ms
AAAA
81ms
TXT
315ms
CAA
64ms
HTTPS
71ms
TLSA
226ms
SOA
0ms
MTA-STS
101ms
DNSSEC
2084ms
SRV
94ms
Total
3221ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 23:47:01 3221ms 3 NS 1 A 0 MX 🔓 Insecure View
2026-06-20 15:44:40 1284ms 3 NS 1 A 0 MX 🔓 Insecure View
2026-06-18 04:32:28 1191ms 3 NS 1 A 0 MX 🔓 Insecure View
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