---
"@context": https://schema.org
"@type": TechArticle
"@id": https://www.twilio.com/docs/api/errors/11210#article
headline: "11210: HTTP bad host name"
url: https://www.twilio.com/docs/api/errors/11210
inLanguage: en
dateModified: 2026-03-11T18:38:39.000Z
author:
  "@type": Organization
  name: Twilio Developer Education Team
publisher:
  "@type": Organization
  name: Twilio
---

# 11210: HTTP bad host name

Log Type: APPLICATION

Log Level: ERROR

## Description

The DNS entry for the URL's host cannot be resolved.

### Possible causes

* URL references a locally defined hostname (check your `/etc/hosts`)
* URL references an undefined hostname

### Possible solutions

* Verify the hostname of the URL has a valid DNS record the can be resolved by the public