IP Anonymizer
Anonymize a single IP address — mask octets or hash for analytics. Share logs without exposing users — local processing, free, no signup.
How to Use the IP Anonymizer
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Frequently Asked Questions
Mask or hash?
Masking (zero last octet) keeps geo utility; deterministic unsalted SHA-256 hashing (first 8 hex chars mapped to 4 octets) preserves joinability across datasets. Pick per analysis need: /24 zeroes the last octet, /16 zeroes the last two.
Does it anonymize IPv6 addresses too?
Yes — IPv6 keeps the first 48 bits (first 3 hextets) with the rest zeroed, always. Full-zeroing kills all utility.
GDPR sufficient?
Proper masking plus no re-identification keys generally qualifies; hashed IPs with retained salts may still count as personal data. Know your standard.
Are logs uploaded?
No — anonymization runs locally in your browser. Source logs never leave your device.
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Last updated October 2026