Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
double-n-design.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 22:51:45 UTC · ↺ Refresh
MX Hostnames
- mail.double-n-design.de
MX Priorities
- mail.double-n-design.de: 10
A / AAAA Records
- 45.136.31.195 ↩ os20.login-center.eu
Mail Server IPs
- 45.136.31.195 ↩ os20.login-center.eu
SOA Record
Raw SOA
ns01.login-center.eu dom.osna-solution.de 2023111300 43200 7200 1209600 86400
Primary NS (mname)
ns01.login-center.eu
Admin Email (rname)
dom@osna-solution.de
Serial
2023111300
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns01.login-center.eu
ns03.login-center.eu
ns02.login-center.eu
ns04.login-center.eu
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:45.136.31.195/32 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a ip4:45.136.31.195/32 -all
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