# `DESTINATION_BLOCKED` Destination not allowed

Source: https://checkslip.com/en/problems/destination-blocked

- **HTTP status**: `422`
- **Credit**: No credit taken

## Meaning

The host resolves to a non-public IP (for example 127.0.0.1, 10.x, 192.168.x, 169.254.x), which is blocked for security.

## Fix

Use a URL reachable from the public internet.

## Example response

```
{
  "type": "https://checkslip.com/problems/destination-blocked",
  "title": "Destination not allowed",
  "status": 422,
  "code": "DESTINATION_BLOCKED",
  "instance": "0192f3a4-7b1c-7d2e-8f30-4a5b6c7d8e9f"
}
```