b4trees.dk
📜 Historical scan 2026-06-16 13:57:07  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   64ms
NameserverIP addressesPTRASN / ISP
ns1.simply.com — — —
ns2.simply.com — — —
ns3.simply.com — — —
ns4.simply.com — — —
🌍 A Records1 records   63ms
IPTTLPTRASNISP / OrgCIDRCountryCity
94.231.103.122 — linux105.unoeuro.com AS48854 team.blue Denmark A/S 94.231.96.0/20 🇩🇰 Denmark —
📧 MX Records1 records   62ms
PriorityTTLMail ServerIP addressesPTRASN
0 — b4trees-dk.mail.protection.outlook.com 52.101.68.18
52.101.68.32
52.101.73.1
52.101.73.24		 mail-db4pr02cu00302.inbound.protection.outlook.com
mail-db3pr0202cu00200.inbound.protection.outlook.com
mail-am3pr04cu00501.inbound.protection.outlook.com
mail-as8pr05cu00300.inbound.protection.outlook.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   125ms
TXT Record
MS=ms92697246
v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all
✉️ SPF
PolicyRecord (b4trees.dk)
-all (hard fail) v=spf1 include:spf.protection.outlook.com include:spf.simply.com -all
📨 DMARC
PolicyRecord (_dmarc.b4trees.dk)
p=reject v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;
📬 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)
🔐 DNSSEC147ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA52ms
FieldValue
Serial2025042300
Primary NS (MNAME)ns1.simply.com
Responsible (RNAME)hostmaster@simply.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
64ms
A
63ms
MX
62ms
AAAA
57ms
TXT
125ms
CAA
53ms
HTTPS
62ms
TLSA
423ms
SOA
52ms
MTA-STS
64ms
DNSSEC
147ms
SRV
0ms
Total
1022ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 02:36:44 1407ms 4 NS 1 A 1 MX 🔒 Secure View
2026-07-02 00:41:54 902ms 4 NS 1 A 1 MX 🔒 Secure View
2026-06-16 13:57:07 1022ms 4 NS 1 A 1 MX 🔒 Secure View
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