4d.dk
📜 Historical scan 2026-06-16 12:36:58  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   18ms
NameserverIP addressesPTRASN / ISP
ns01.one.com — — —
ns02.one.com — — —
🌍 A Records1 records   29ms
IPTTLPTRASNISP / OrgCIDRCountryCity
51.144.107.53 — — AS8075 Microsoft Corporation 51.144.0.0/15 🇳🇱 The Netherlands —
📧 MX Records1 records   36ms
PriorityTTLMail ServerIP addressesPTRASN
0 — 4d-dk.mail.protection.outlook.com 52.101.68.39
52.101.68.5
52.101.73.12
52.101.73.8		 mail-db7pr03cu00607.inbound.protection.outlook.com
mail-du2pr03cu00105.inbound.protection.outlook.com
mail-am4pr0401cu00104.inbound.protection.outlook.com
mail-am0pr04cu00500.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 Records3 records   225ms
TXT Record
google-site-verification=uNMmmvvw5p2n0JJ329b765455UBY9iEN26AuBLZdq7U
linkedin-site-verification=69ed58e2-3e34-4b63-a2d2-188e1d148ae1
v=spf1 ip4:195.184.33.126 include:spf.protection.outlook.com include:147824781.spf02.hubspotemail.net -all
✉️ SPF
PolicyRecord (4d.dk)
-all (hard fail) v=spf1 ip4:195.184.33.126 include:spf.protection.outlook.com include:147824781.spf02.hubspotemail.net -all
📨 DMARC
PolicyRecord (_dmarc.4d.dk)
p=none (monitor only) v=DMARC1; p=none;
📬 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)
🔐 DNSSEC124ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA17ms
FieldValue
Serial2026040104
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
18ms
A
29ms
MX
36ms
AAAA
36ms
TXT
225ms
CAA
31ms
HTTPS
32ms
TLSA
94ms
SOA
17ms
MTA-STS
78ms
DNSSEC
124ms
SRV
0ms
Total
778ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 04:03:26 1041ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-27 09:42:31 1462ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 05:20:13 1696ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-27 00:07:01 1030ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-23 10:55:00 972ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-16 12:36:58 778ms 2 NS 1 A 1 MX 🔒 Secure View
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