Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
komputronik.de
Yes
✓ Yes
Cloudflare
No
No
⚠ Yes
⚠ Yes
No
Checked via [email protected]
· 2026-03-21 03:42:34 UTC · ↺ Refresh
MX Hostnames
- route1.mx.cloudflare.net
- route2.mx.cloudflare.net
- route3.mx.cloudflare.net
MX Priorities
- route2.mx.cloudflare.net: 2
- route3.mx.cloudflare.net: 47
- route1.mx.cloudflare.net: 66
A / AAAA Records
- 172.67.208.243
- 104.21.61.104
- 2606:4700:3037::6815:3d68
- 2606:4700:3035::ac43:d0f3
Mail Server IPs
- 162.159.205.18 ↩ route2.mx.cloudflare.net
- 162.159.205.17 ↩ route2.mx.cloudflare.net
- 162.159.205.19 ↩ route2.mx.cloudflare.net
- 2606:4700:f5::10 ↩ route2.mx.cloudflare.net
- 2606:4700:f5::f ↩ route2.mx.cloudflare.net
- 2606:4700:f5::e ↩ route2.mx.cloudflare.net
- 162.159.205.25 ↩ route3.mx.cloudflare.net
- 162.159.205.24 ↩ route3.mx.cloudflare.net
- 162.159.205.23 ↩ route3.mx.cloudflare.net
- 2606:4700:f5::11 ↩ route3.mx.cloudflare.net
- 2606:4700:f5::12
- 2606:4700:f5::13
- 162.159.205.12
- 162.159.205.13
- 162.159.205.11
- 2606:4700:f5::b
- 2606:4700:f5::d
- 2606:4700:f5::c
SOA Record
Raw SOA
karl.ns.cloudflare.com dns.cloudflare.com 2397937318 10000 2400 604800 1800
Primary NS (mname)
karl.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397937318
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
sofia.ns.cloudflare.com
karl.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.ktr.pl include:_spf.mx.cloudflare.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; aspf=s; adkim=s; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected],mailto:[email protected]
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.ktr.pl include:_spf.mx.cloudflare.net -all
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