---
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"@id": https://www.twilio.com/docs/api/errors/21255#article
headline: "21255: Maximum IP Access Control Lists reached"
url: https://www.twilio.com/docs/api/errors/21255
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
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  name: Twilio Developer Education Team
publisher:
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  name: Twilio
---

# 21255: Maximum IP Access Control Lists reached

Log Type: APPLICATION

Log Level: ERROR

## Description

You cannot have more than 1000 IP Access Control Lists.

### Possible causes

* You cannot have more than 1000 IP Access Control Lists.

### Possible solutions

* Remove current IP Access Control Lists if you must create new ones.