coolmail.dk
Last scanned: 2026-09-04 21:18:55  ·  818ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   36ms
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   32ms
IPTTLPTRASNISP / OrgCIDRCountryCity
86.58.157.27 600s — AS47292 Sentia Denmark A/S 86.58.156.0/22 🇩🇰 Denmark Copenhagen
📧 MX Records1 records   31ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s mail.coolmail.dk 86.58.157.12 mail2.coolmail.dk AS47292 Sentia Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscovercoolmail.dk → 86.58.157.27
🔶 Autoconfigcoolmail.dk → 86.58.157.27
🔷 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.coolmail.dk coolmail.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC101ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026090201
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
36ms
A
32ms
MX
31ms
AAAA
34ms
TXT
134ms
CAA
33ms
HTTPS
32ms
TLSA
303ms
SOA
0ms
MTA-STS
47ms
DNSSEC
101ms
SRV
49ms
Total
818ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-04 21:18:55 818ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-25 20:42:56 4767ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-03 20:11:15 8945ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-03 19:52:27 961ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-30 09:52:08 668ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-24 23:14:18 781ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-18 12:36:03 7294ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 22:16:00 4409ms 2 NS 1 A 1 MX 🔒 Secure View
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