iskolen.dk
Last scanned: 2026-09-04 14:32:47  ·  805ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   59ms
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   61ms
IPTTLPTRASNISP / OrgCIDRCountryCity
65.21.91.230 43200s static.230.91.21.65.clients.your-server.de AS24940 Hetzner Online GmbH 65.21.0.0/16 🇫🇮 Finland Helsinki
📧 MX Records1 records   52ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover65.21.91.230
🔶 Autoconfig65.21.91.230
🔷 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
🔏 ACME Challenge
TypeNameValue
TXT _acme-challenge.iskolen.dk cJLNhW2UnzM1pyMwZaoIV8ITbZLKdGp09r4WfvRQgtY
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC134ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026090201
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
59ms
A
61ms
MX
52ms
AAAA
65ms
TXT
180ms
CAA
43ms
HTTPS
47ms
TLSA
251ms
SOA
0ms
MTA-STS
79ms
DNSSEC
134ms
SRV
78ms
Total
805ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-04 14:32:47 805ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-28 01:40:47 538ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-25 13:32:46 669ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-05 11:52:35 1209ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-01 04:58:16 4675ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-03 14:04:29 550ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-18 06:38:27 3162ms 2 NS 1 A 0 MX 🔒 Secure View
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