teori-undervisning.dk
Last scanned: 2026-08-24 06:56:11  ·  3508ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   167ms
NameserverIP addressesPTRASN / ISP
ns1.nhl-data.dk 185.136.96.11
2a06:fb00:1::1:11		 ns1.nhl-data.dk
ns1.nhl-data.dk		 AS203391 Cloud DNS Ltd
AS203391 Cloud DNS Ltd
ns2.nhl-data.dk 185.136.97.11
2a06:fb00:1::2:11		 ns2.nhl-data.dk
ns2.nhl-data.dk		 AS203391 Cloud DNS Ltd
AS203391 Cloud DNS Ltd
ns3.nhl-data.dk 185.136.98.11
2a06:fb00:1::3:11		 ns3.nhl-data.dk
ns3.nhl-data.dk		 AS203391 Cloud DNS Ltd
AS203391 Cloud DNS Ltd
ns4.nhl-data.dk 185.136.99.11
2a06:fb00:1::4:11		 ns4.nhl-data.dk
ns4.nhl-data.dk		 AS203391 Cloud DNS Ltd
AS203391 Cloud DNS Ltd
🌍 A Records2 records   174ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.206.180.167 3600s 42.http-proxy2.cloudns.net AS205787 Public Cloud Ltd. 185.206.180.0/22 🇩🇪 Germany —
185.206.180.185 3600s 185.http4.cloudns.net AS205787 Public Cloud Ltd. 185.206.180.0/22 🇩🇪 Germany —
📧 MX Records
📧
No MX records found
🔷 AAAA Records (IPv6)2 records   174ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a0b:1640:1:1:1013:1:1:1 3600s 185.http4.cloudns.net AS205787 Public Cloud Ltd. 2a0b:1640:1:0:0:0:0:0/48 🇧🇬 Bulgaria —
2a0b:1640:1:1:1:1:1783:3454 3600s http-proxy2.cloudns.net AS205787 Public Cloud Ltd. 2a0b:1640:1:0:0:0:0:0/48 🇧🇬 Bulgaria —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   657ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (teori-undervisning.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.teori-undervisning.dk)
p=reject v=DMARC1; p=reject;
📬 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)
🔐 DNSSEC480ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2026082304
Primary NS (MNAME)ns1.nhl-data.dk
Responsible (RNAME)hostmaster@nhl-data.dk
Refresh10800s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
167ms
A
174ms
MX
165ms
AAAA
174ms
TXT
657ms
CAA
217ms
HTTPS
169ms
TLSA
257ms
SOA
0ms
MTA-STS
241ms
DNSSEC
480ms
SRV
414ms
Total
3508ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-24 06:56:11 3508ms 4 NS 2 A 0 MX 🔓 Insecure View
2026-08-23 00:48:25 2903ms 4 NS 2 A 0 MX 🔓 Insecure View
2026-06-24 03:08:30 804ms 4 NS 2 A 0 MX 🔓 Insecure View
2026-06-23 05:39:03 1160ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-21 08:05:16 986ms 4 NS 2 A 0 MX 🔓 Insecure View
2026-06-21 07:25:46 914ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-18 00:15:44 661ms 4 NS 2 A 0 MX 🔓 Insecure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone