921.dk
Last scanned: 2026-06-28 03:17:11  ·  1828ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers5 records   61ms
NameserverIP addressesPTRASN / ISP
ns1.linode.com 2600:14c0:6::2
92.123.94.2		 c1-2.akashield.net
c1-2.akashield.net		 AS21342 Akamai International B.V.
AS21342 Akamai International B.V.
ns2.linode.com 2600:14c0:6::3
92.123.94.3		 c1-3.akashield.net
c1-3.akashield.net		 AS21342 Akamai International B.V.
AS21342 Akamai International B.V.
ns3.linode.com 2600:14c0:7::3
92.123.95.3		 c2-3.akashield.net
c2-3.akashield.net		 AS21342 Akamai International B.V.
AS21342 Akamai International B.V.
ns4.linode.com 2600:14c0:7::4
92.123.95.4		 c2-4.akashield.net
c2-4.akashield.net		 AS21342 Akamai International B.V.
AS21342 Akamai International B.V.
ns5.linode.com 2600:14c0:7::2
92.123.95.2		 c2-2.akashield.net
c2-2.akashield.net		 AS21342 Akamai International B.V.
AS21342 Akamai International B.V.
🌍 A Records1 records   59ms
IPTTLPTRASNISP / OrgCIDRCountryCity
69.28.88.124 86400s — AS6364 Atlantic.net, Inc. 69.28.64.0/19 🇺🇸 United States Garland
📧 MX Records2 records   55ms
PriorityTTLMail ServerIP addressesPTRASN
10 86400s mx0.921.dk 69.28.88.124 — AS6364 Atlantic.net, Inc.
20 86400s mx1.921.dk 69.28.88.124 — AS6364 Atlantic.net, Inc.
🔷 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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC82ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA55ms
FieldValue
Serial2021000002
Primary NS (MNAME)ns1.linode.com
Responsible (RNAME)admin@921.dk
Refresh14400s
Retry14400s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
61ms
A
59ms
MX
55ms
AAAA
60ms
TXT
873ms
CAA
57ms
HTTPS
62ms
TLSA
325ms
SOA
55ms
MTA-STS
204ms
DNSSEC
82ms
SRV
314ms
Total
1828ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-28 03:17:11 1828ms 5 NS 1 A 2 MX 🔓 Insecure View
2026-06-16 12:45:12 1613ms 5 NS 1 A 2 MX 🔓 Insecure View
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