**Symfony version(s) affected**: 4.4.4 **Description** for domain 0-------------------------------------------------------------0.com raise InvalidArgumentException **How to reproduce** $http_client = HttpClient::create(); $response = $http_client->request('GET', 'http://0-------------------------------------------------------------0.com'); **Possible Solution** **Additional context** [Symfony\Component\HttpClient\Exception\InvalidArgumentException] In HttpClientTrait.php line 446: Unsupported host in "http://0-------------------------------------------------------------0.com/".