derekprince.dk
Last scanned: 2026-08-30 21:55:09  ·  1744ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   94ms
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   99ms
IPTTLPTRASNISP / OrgCIDRCountryCity
172.205.112.13 3600s — AS8075 Microsoft Corporation 172.200.0.0/13 🇮🇪 Ireland Dublin
📧 MX Records2 records   154ms
PriorityTTLMail ServerIP addressesPTRASN
5 3600s eu-esec-01.heimdalsecurity.com 20.50.183.144
20.50.183.146		 eu-esec-01.heimdalsecurity.com
eu-esec-01.heimdalsecurity.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
5 3600s eu-esec-02.heimdalsecurity.com 20.50.183.144
20.50.183.146		 eu-esec-01.heimdalsecurity.com
eu-esec-01.heimdalsecurity.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover172.205.112.13
🔶 Autoconfig172.205.112.13
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   393ms
TXT Record
v=spf1 ip4:87.116.14.228 ip4:81.7.137.124 a:webmail.aks.dk include :spf.curanet.dk include:_smtpcluster.jay.net ~all
✉️ SPF
PolicyRecord (derekprince.dk)
~all (soft fail) v=spf1 ip4:87.116.14.228 ip4:81.7.137.124 a:webmail.aks.dk include :spf.curanet.dk include:_smtpcluster.jay.net ~all
📨 DMARC
PolicyRecord (_dmarc.derekprince.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 / DANE2 records   280ms
Service / OwnerTypeCert association
SMTP _25._tcp.eu-esec-01.heimdalsecurity.com DANE-EE · SPKI · SHA-256 2E8933DD6DB99304A5A9D5C4ECDE7B8E…
SMTP _25._tcp.eu-esec-02.heimdalsecurity.com DANE-EE · SPKI · SHA-256 2E8933DD6DB99304A5A9D5C4ECDE7B8E…
🔐 DNSSEC341ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082901
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
94ms
A
99ms
MX
154ms
AAAA
86ms
TXT
393ms
CAA
159ms
HTTPS
133ms
TLSA
280ms
SOA
0ms
MTA-STS
176ms
DNSSEC
341ms
SRV
169ms
Total
1744ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-30 21:55:09 1744ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-27 19:12:29 798ms 2 NS 1 A 2 MX 🔒 Secure View
2026-08-07 19:25:25 4948ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-21 10:22:23 2820ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-21 09:54:31 1003ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-17 02:05:55 731ms 2 NS 1 A 2 MX 🔒 Secure View
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