SPF Record Checker
Inspect Sender Policy Framework (SPF) records to prevent email spoofing and verify authorized IP mechanisms.
How to Use SPF Record Checker
Enter your domain name.
The tool extracts the v=spf1 TXT record.
Review authorized IP ranges and DNS lookup limit (max 10).
SPF Record Checker runs 100% client-side in your web browser. Your data, passwords, keys, and files are processed using the Web Crypto API and never transmitted to any server. Zero telemetry, zero storage, zero cloud processing.
Frequently Asked Questions
What is the SPF 10-lookup limit?
RFC 7208 limits SPF processing to 10 DNS lookups to prevent denial-of-service amplification.
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