istudio.dk
Last scanned: 2026-08-19 17:10:24  ·  4694ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   34ms
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   34ms
IPTTLPTRASNISP / OrgCIDRCountryCity
81.166.172.247 900s 247.81-166-172.customer.lyse.net AS29695 Lyse Tele 81.166.0.0/15 🇳🇴 Norway Mjøndalen
📧 MX Records1 records   39ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoveristudio.dk → 81.166.172.247
🔶 Autoconfigistudio.dk → 81.166.172.247
🔷 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
CNAME _acme-challenge.istudio.dk istudio.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC85ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA34ms
FieldValue
Serial2026081401
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
34ms
A
34ms
MX
39ms
AAAA
47ms
TXT
164ms
CAA
44ms
HTTPS
50ms
TLSA
84ms
SOA
34ms
MTA-STS
55ms
DNSSEC
85ms
SRV
63ms
Total
4694ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-19 17:10:24 4694ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-17 07:50:24 16735ms 2 NS 0 A 1 MX 🔒 Secure View
2026-07-16 09:02:44 680ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-22 20:32:39 637ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 21:08:13 703ms 2 NS 1 A 0 MX 🔒 Secure View
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