Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
io-network.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 19:51:00 UTC · ↺ Refresh
MX Hostnames
- mx.io-network.de
- kunden.io-network.de
MX Priorities
- mx.io-network.de: 10
- kunden.io-network.de: 5
A / AAAA Records
- 188.40.21.211 ↩ kunden.io-network.de
- 2a01:4f8:221:1a84::211 ↩ kunden.io-network.de
Mail Server IPs
- 188.40.21.211 ↩ kunden.io-network.de
- 2a01:4f8:221:1a84::211 ↩ kunden.io-network.de
SOA Record
Raw SOA
ns1.domaindiscount24.net tech.key-systems.net 2026013937 10800 3600 604800 28800
Primary NS (mname)
ns1.domaindiscount24.net
Admin Email (rname)
tech@key-systems.net
Serial
2026013937
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
28800s
Nameservers (NS)
ns2.domaindiscount24.net
ns1.domaindiscount24.net
ns3.domaindiscount24.net
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx a:kunden.io-network.de ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; aspf=s; fo=0:1:d:s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
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 a mx a:kunden.io-network.de ~all
Full email verification for io-network.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
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