sudoku-master.dk
Last scanned: 2026-08-28 01:53:21  ·  659ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   60ms
NameserverIP addressesPTRASN / ISP
ns1.yoursrs.com 104.47.151.178
2603:1020:200::682f:a758		 ns1.yoursrs.com
—		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns2.yoursrs.com 20.79.93.42
2603:1020:c01:4::8		 ns2.yoursrs.com
—		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🌍 A Records1 records   61ms
IPTTLPTRASNISP / OrgCIDRCountryCity
87.213.9.179 3600s — AS13127 Odido Netherlands B.V. 87.213.0.0/16 🇳🇱 The Netherlands Vianen
📧 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 Records1 records   269ms
TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.keesing.com -all
✉️ SPF
PolicyRecord (sudoku-master.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com include:spf.keesing.com -all
📨 DMARC
PolicyRecord (_dmarc.sudoku-master.dk)
p=reject v=DMARC1; p=reject; rua=mailto:aggregate@keesing.net,mailto:dmarc_agg@vali.email; ruf=mailto:forensicreports@keesing.net; fo=1; adkim=s; aspf=s
📬 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)
🔐 DNSSEC92ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2023071203
Primary NS (MNAME)ns1.yoursrs.com
Responsible (RNAME)hosting@keesing.com
Refresh3600s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
60ms
A
61ms
MX
58ms
AAAA
77ms
TXT
269ms
CAA
44ms
HTTPS
66ms
TLSA
95ms
SOA
0ms
MTA-STS
84ms
DNSSEC
92ms
SRV
91ms
Total
659ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 01:53:21 659ms 2 NS 1 A 0 MX 🔓 Insecure View
2026-08-27 04:41:06 673ms 2 NS 1 A 0 MX 🔓 Insecure View
2026-06-25 18:51:19 1556ms 2 NS 1 A 0 MX 🔓 Insecure View
2026-06-19 23:14:37 2538ms 2 NS 1 A 0 MX 🔓 Insecure View
2026-06-17 12:55:25 1904ms 2 NS 1 A 0 MX 🔓 Insecure View
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