---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/21736#article
headline: "21736: Brand Registration Failure: Domain Ownership Could Not Be Verified"
url: https://www.twilio.com/docs/api/errors/21736
inLanguage: en
dateModified: 2026-04-20T06:45:15.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 21736: Brand Registration Failure: Domain Ownership Could Not Be Verified

Log Type: APPLICATION

Log Level: ERROR

## Description

The domain used in the brand contact email could not be independently verified as belonging to the brand.

### Possible causes

The domain has no verifiable public ownership records or does not align with the registered brand information.

### Possible solutions

Use an email domain that is clearly linked to the brand (for example, via website, WHOIS record, or DNS TXT record). Contact Twilio Support for additional guidance.