21.dk
Last scanned: 2026-06-23 13:57:47  ·  2127ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   149ms
NameserverIP addressesPTRASN / ISP
a.portsdns.se 2607:f740:e009::1
45.54.35.101		 a.portsdns.se
a.portsdns.se		 AS63911 NetActuate, Inc
AS63911 NetActuate, Inc
b.portsdns.net 2a00:11c0:3d::1
94.16.23.1		 b.portsdns.net
b.portsdns.net		 AS42354 Anexia Cloud Solutions GmbH
AS42354 Anexia Cloud Solutions GmbH
🌍 A Records1 records   182ms
IPTTLPTRASNISP / OrgCIDRCountryCity
193.14.90.203 28800s redirect.portsit.se AS1257 Tele2 SWIPnet 193.12.0.0/14 🇸🇪 Sweden Malmö
📧 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   1440ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (21.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.21.dk)
p=reject v=DMARC1; p=reject; rua=mailto:65250275ea9c3@dmarc.centerasecurity.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)
🔐 DNSSEC327ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA190ms
FieldValue
Serial2024090900
Primary NS (MNAME)a.portsdns.se
Responsible (RNAME)registry@ports.net
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)28800s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
149ms
A
182ms
MX
138ms
AAAA
196ms
TXT
1440ms
CAA
148ms
HTTPS
119ms
TLSA
97ms
SOA
190ms
MTA-STS
127ms
DNSSEC
327ms
SRV
1157ms
Total
2127ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-23 13:57:47 2127ms 2 NS 1 A 0 MX 🔓 Insecure View
2026-06-23 09:27:41 991ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-16 12:53:18 1024ms 2 NS 1 A 0 MX 🔓 Insecure View
2026-06-16 12:50:30 987ms 2 NS 1 A 0 MX 🔓 Insecure View
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