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Expand Up @@ -3,12 +3,13 @@ pcx_content_type: configuration
title: Block traffic by geographical location
---

This example custom rule blocks requests by autonomous system number (ASN), continent, or country of origin.
This example custom rule blocks requests by autonomous system number (ASN), continent, country of origin, or region.

- **Expression**: `(ip.src.asnum eq 131279) or (ip.src.continent eq "AS") or (ip.src.country eq "KP")`
- **Expression**: `(ip.src.asnum eq 131279) or (ip.src.continent eq "AS") or (ip.src.country eq "KP") or (ip.src.region_code eq "CA")`
- **Action**: _Block_

## Other resources

- [Use case: Block traffic from specific countries](/waf/custom-rules/use-cases/block-traffic-from-specific-countries/)
- [Use case: Allow traffic from specific countries only](/waf/custom-rules/use-cases/allow-traffic-from-specific-countries/)
- [Fields reference: Geolocation](/ruleset-engine/rules-language/fields/reference/?field-category=Geolocation)