a9f.dk
Last scanned: 2026-08-07 09:07:57  ·  4955ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   29ms
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   33ms
IPTTLPTRASNISP / OrgCIDRCountryCity
85.184.166.114 43200s 85.184.166.114.static.dhcp.aura-net.dk AS204274 AURA Fiber A/S 85.184.128.0/18 🇩🇰 Denmark Viby J
📧 MX Records1 records   38ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s generated-by-one-com-for-mx-10.a9f.dk 85.184.166.114 85.184.166.114.static.dhcp.aura-net.dk AS204274 AURA Fiber A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover85.184.166.114
🔶 Autoconfig85.184.166.114
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   243ms
TXT Record
v=spf1 a mx ip4:85.184.166.114 ip4:10.0.0.0/24 ip4:127.0.0.1 include:sendgrid.net -all include:_custspf.one.com ~all
✉️ SPF
PolicyRecord (a9f.dk)
-all (hard fail) v=spf1 a mx ip4:85.184.166.114 ip4:10.0.0.0/24 ip4:127.0.0.1 include:sendgrid.net -all include:_custspf.one.com ~all
📨 DMARC
PolicyRecord (_dmarc.a9f.dk)
p=reject v=DMARC1; p=reject; rua=mailto:dmarc-reports@a9f.dk;
📬 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)
🔐 DNSSEC89ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA41ms
FieldValue
Serial2026032401
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
29ms
A
33ms
MX
38ms
AAAA
27ms
TXT
243ms
CAA
45ms
HTTPS
44ms
TLSA
292ms
SOA
41ms
MTA-STS
71ms
DNSSEC
89ms
SRV
76ms
Total
4955ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-07 09:07:57 4955ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-24 19:48:36 3597ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 12:52:38 1109ms 2 NS 1 A 1 MX 🔒 Secure View
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