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IP Allowlist Generator

Build IP allowlist rules for firewalls, security groups, and app configs from CIDR lists. Generate AWS, Nginx, and htaccess formats — local, free, no signup.

100% Local Browser Native

How to Use the IP Allowlist Generator

1. List CIDRs

Office, VPN, and partner ranges.

2. Pick target format

AWS, Nginx, Apache, or plain list.

3. Deploy rules

Paste into config; verify order matters.

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Frequently Asked Questions

Which output formats?

AWS security-group rules, Nginx allow/deny blocks, Apache htaccess, and plain CIDR lists. One input list, every syntax.

Office plus VPN ranges?

Combine static office CIDRs with VPN egress ranges in one list. Dynamic home IPs need DDNS or tailscale instead of allowlisting.

Order matters?

Yes in Nginx/Apache (first match wins): allows before final deny-all. The generator orders correctly — verify after pasting.

Are my ranges uploaded?

No — generation runs locally in your browser. Infrastructure details never leave your device.

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Last updated October 2026