# IP address filter

**URL:** <https://community.piwik.pro/t/ip-address-filter/3167>\
**Category:** Data collection and tags\
**Created:** [November 5, 2023, 12:13pm UTC](https://community.piwik.pro/t/ip-address-filter/3167 "2023-11-05T12:13:08Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![LoneWolves](https://avatars.discourse-cdn.com/v4/letter/l/df705f/32.png) [@LoneWolves](https://community.piwik.pro/u/LoneWolves)\
**Post date:** [November 5, 2023, 12:13pm UTC](https://community.piwik.pro/t/ip-address-filter/3167/1 "2023-11-05T12:13:08Z")

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Does the IP filter work with regex? When I add this ^212.203.78.([1-9]|[12]\d|30)$ I get an error message?

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**Author:** ![mbaersch](https://dub1.discourse-cdn.com/flex005/user_avatar/community.piwik.pro/mbaersch/32/35_2.png) [@mbaersch](https://community.piwik.pro/u/mbaersch)\
**Post date:** [November 6, 2023, 7:50pm UTC](https://community.piwik.pro/t/ip-address-filter/3167/2 "2023-11-06T19:50:20Z")

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You can only use wildcards but no regex afaik… And no IPV6 or CIDR notation. Which would be a nice addition 😶

best,  
Markus