---
title: DNS_HOSTNAME_EMPTY
product: vercel
url: /docs/errors/DNS_HOSTNAME_EMPTY
type: reference
prerequisites:
  []
related:
  - /docs/domains/working-with-dns
  - /docs/deployments/logs
summary: An empty DNS record was received as part of the DNS response. This is a DNS error.
install_vercel_plugin: npx plugins add vercel/vercel-plugin
---

# DNS_HOSTNAME_EMPTY

The `DNS_HOSTNAME_EMPTY` error occurs when an empty DNS record is received as part of the DNS response while attempting to connect to a private IP from an external rewrite.

**Error Code:** `502`

**Name:** Bad Gateway

## Troubleshoot

To troubleshoot this error, follow these steps:

1. **Review DNS configuration:** Check the [DNS configuration](/docs/domains/working-with-dns) to ensure that it's correctly set up and doesn't have any empty or incorrect entries
2. **Check for private IP addresses:** Ensure that the request isn't attempting to connect to a private IP address from an external source
3. **Review application logs:** Inspect the [application logs](/docs/deployments/logs) for any warnings or errors related to DNS or the attempted connections


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