DNSBuddy
SPF Analyzer Tool

Parse and expand SPF records

Enter a domain or paste an SPF record to resolve includes and see all IP ranges with ownership labels.

Looking for a free MxToolbox alternative for SPF? See our MxToolbox alternatives comparison, or use the dedicated SPF checker landing page.

SPF Analyzer
Provide a domain (to fetch its SPF record) or paste a raw SPF record to expand and list all IP ranges.

Domain to fetch and expand SPF for (optional if record is set). E.g.,

Paste a raw SPF record to expand (optional if domain is set)

Check if this IP would pass the SPF record. Requires domain.