4os.dk
Last scanned: 2026-06-27 23:51:25  ·  1420ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   256ms
NameserverIP addressesPTRASN / ISP
ns1.curanet.dk 185.25.141.12
2a02:2339:4006:108::123		 ns1.curanet.dk
ns1.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.curanet.dk 2a02:2339:1:10f::123:123
91.197.248.75		 ns2.curanet.dk
ns2.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
🌍 A Records1 records   265ms
IPTTLPTRASNISP / OrgCIDRCountryCity
95.166.113.35 3600s — AS3292 TDC Holding A/S 95.166.64.0/18 🇩🇰 Denmark —
📧 MX Records1 records   237ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s 4os-dk.mail.protection.outlook.com — — —
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com
🔶 Autoconfig93.191.155.37
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records2 records   326ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 100 1 443 remote.4os.dk
_sipfederationtls._tcp 100 1 5061 sipfed.online.lync.com
📝 TXT Records3 records   395ms
TXT Record
_globalsign-domain-verification=xxTTxdBZBDdcmwf1Vq1WUXd2zOngTJkHnTmXMmoVKx
MS=ms99155619
v=spf1 include:spf.protection.outlook.com -all
✉️ SPF
PolicyRecord (4os.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com -all
📨 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)
🔐 DNSSEC351ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA225ms
FieldValue
Serial2021111701
Primary NS (MNAME)ns1.curanet.dk
Responsible (RNAME)hostmaster@curanet.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
256ms
A
265ms
MX
237ms
AAAA
217ms
TXT
395ms
CAA
249ms
HTTPS
266ms
TLSA
335ms
SOA
225ms
MTA-STS
245ms
DNSSEC
351ms
SRV
326ms
Total
1420ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-27 23:51:25 1420ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-24 10:21:31 957ms 2 NS 1 A 1 MX ⚠️ Bogus View
2026-06-22 05:57:38 1684ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 00:52:00 881ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 13:14:22 1673ms 2 NS 1 A 1 MX 🔒 Secure View
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