collegesilkeborg.dk
Last scanned: 2026-08-09 11:40:58  ·  4623ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   60ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S
🌍 A Records1 records   40ms
IPTTLPTRASNISP / OrgCIDRCountryCity
195.254.168.117 600s — AS51073 Aarhus Business College 195.254.168.0/23 🇩🇰 Denmark Højbjerg
📧 MX Records1 records   50ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
🔷 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)
🔐 DNSSEC93ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026080901
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
60ms
A
40ms
MX
50ms
AAAA
30ms
TXT
174ms
CAA
51ms
HTTPS
44ms
TLSA
4030ms
SOA
0ms
MTA-STS
79ms
DNSSEC
93ms
SRV
80ms
Total
4623ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-09 11:40:58 4623ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-13 10:01:08 636ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 16:09:07 980ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-22 02:45:21 478ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 10:41:35 501ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 05:04:10 621ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-19 15:43:56 447ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 21:45:22 519ms 2 NS 1 A 0 MX 🔒 Secure View
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