oppa.dk
Last scanned: 2026-08-25 11:20:14  ·  561ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   50ms
🌍 A Records2 records   35ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.6.221 300s AS13335 Cloudflare, Inc. 104.21.0.0/17
172.67.135.83 300s AS13335 Cloudflare, Inc. 172.67.128.0/17
📧 MX Records1 records   27ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx.simply.com 94.231.106.20 mx.simply.com AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔶 Autoconfig172.67.135.83
🔷 AAAA Records (IPv6)2 records   27ms
🔐 HTTPS Records1 records   36ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.6.221,172.67.135.83 ech=AEX+DQBBOAAgACCoHv6+0vAqMmPAoHuYGDp/hbTGrX5q1kGCAuTjYfMZcwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:8753,2606:4700:3034::6815:6dd
📝 TXT Records1 records   153ms
TXT Record
v=spf1 include:spf.simply.com -all
✉️ SPF
PolicyRecord (oppa.dk)
-all (hard fail) v=spf1 include:spf.simply.com -all
📨 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 / DANE2 records   44ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com DANE-EE · SPKI · SHA-256 97A3BA009F39C761BFFB6574340E8138…
🔐 DNSSEC106ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2410470093
Primary NS (MNAME)nora.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
50ms
A
35ms
MX
27ms
AAAA
27ms
TXT
153ms
CAA
30ms
HTTPS
36ms
TLSA
44ms
SOA
0ms
MTA-STS
45ms
DNSSEC
106ms
SRV
45ms
Total
561ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 11:20:14 561ms 2 NS 2 A 1 MX 🔓 Insecure View
2026-07-26 09:50:59 8682ms 2 NS 2 A 1 MX ❓ Unknown View
2026-07-24 08:36:26 2390ms 2 NS 2 A 1 MX 🔓 Insecure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone