---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21451#article
headline: "21451: Invalid area code"
url: https://www.twilio.com/docs/api/errors/21451
inLanguage: en
dateModified: 2025-12-18T21:40:49.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21451: Invalid area code

Log Level: ERROR

## Description

You attempted to get a phone number for your account, but the AreaCode parameter you specified was not a valid North American area code. AreaCode is optional, and for Local phone numbers, may be any US or Canadian area code, or for TollFree numbers, may be one of 800,888,877 or 866.