halfdoubleinstitute.dk
Last scanned: 2026-08-20 19:23:48  ·  5454ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   254ms
NameserverIP addressesPTRASN / ISP
ns1.eurodns.com 199.167.66.107
2610:1c8:b002::107		 ns1.eurodns.com
ns1.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
ns2.eurodns.com 104.37.178.107
2610:1c8:b001::107		 ns2.eurodns.com
ns2.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
ns3.eurodns.com 199.167.66.108
2610:1c8:b002::108		 ns3.eurodns.com
ns3.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
ns4.eurodns.com 104.37.178.108
2610:1c8:b001::108		 ns4.eurodns.com
ns4.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
🌍 A Records3 records   226ms
IPTTLPTRASNISP / OrgCIDRCountryCity
18.200.179.139 600s ec2-18-200-179-139.eu-west-1.compute.amazonaws.com AS16509 Amazon.com, Inc. 18.200.0.0/14 🇮🇪 Ireland Dublin
52.208.179.40 600s ec2-52-208-179-40.eu-west-1.compute.amazonaws.com AS16509 Amazon.com, Inc. 52.208.0.0/13 🇮🇪 Ireland Dublin
52.215.88.119 600s ec2-52-215-88-119.eu-west-1.compute.amazonaws.com AS16509 Amazon.com, Inc. 52.208.0.0/13 🇮🇪 Ireland Dublin
📧 MX Records
📧
No MX records found
🔷 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)
🔐 DNSSEC738ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2025111254
Primary NS (MNAME)ns1.eurodns.com
Responsible (RNAME)hostmaster@eurodns.com
Refresh43200s
Retry7200s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
254ms
A
226ms
MX
253ms
AAAA
260ms
TXT
978ms
CAA
274ms
HTTPS
256ms
TLSA
410ms
SOA
0ms
MTA-STS
298ms
DNSSEC
738ms
SRV
353ms
Total
5454ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-20 19:23:48 5454ms 4 NS 3 A 0 MX 🔒 Secure View
2026-08-19 18:06:04 5353ms 4 NS 3 A 0 MX 🔒 Secure View
2026-08-18 18:05:10 2879ms 4 NS 3 A 0 MX 🔒 Secure View
2026-08-06 12:05:01 1221ms 4 NS 3 A 0 MX 🔒 Secure View
2026-08-02 03:19:23 1575ms 4 NS 3 A 0 MX 🔒 Secure View
2026-07-14 11:52:54 955ms 4 NS 3 A 0 MX 🔒 Secure View
2026-06-27 06:56:52 894ms 4 NS 3 A 0 MX 🔒 Secure View
2026-06-27 02:01:44 853ms 4 NS 3 A 0 MX 🔒 Secure View
2026-06-25 18:52:17 1258ms 4 NS 3 A 0 MX 🔒 Secure View
2026-06-17 10:20:38 2190ms 4 NS 3 A 0 MX 🔒 Secure View
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