Network & DNS100% In-BrowserAnti-Spoofing
SPF Record Checker
Inspect Sender Policy Framework (SPF) records to prevent email spoofing and verify authorized IP mechanisms.
Real-time processing·No server uploads·Zero telemetry
spf-record-checker
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Domain Name
How to Use SPF Record Checker
01
Enter your domain name.
02
The tool extracts the v=spf1 TXT record.
03
Review authorized IP ranges and DNS lookup limit (max 10).
Privacy Guarantee
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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