Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rf-design-online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-31 19:43:52 UTC · ↺ Refresh
MX Hostnames
- sms03.k1net.de
- sms04.k1net.de
MX Priorities
- sms03.k1net.de: 10
- sms04.k1net.de: 20
A / AAAA Records
- 185.171.217.127 ↩ giant-security.eu
Mail Server IPs
- 213.131.233.80 ↩ sms03.k1net.de
- 185.171.218.24 ↩ sms04.k1net.de
SOA Record
Raw SOA
ns.k1net.de hostmaster.k1net.de 2025102301 3600 900 1209600 3600
Primary NS (mname)
ns.k1net.de
Admin Email (rname)
hostmaster@k1net.de
Serial
2025102301
Refresh
3600s
Retry
900s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
ns.k1net.org
ns.k1net.eu
ns.k1net.de
ns.k1net.info
SPF Record
✓ Strict (-all)
v=spf1 include:spf.k1net.de -all
📊 DNS lookups: 1/10
✓ 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
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:spf.k1net.de -all
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