Request timeout with Infura Ropsten API

I am getting the following Connection Error all of a sudden.

port=443): Max retries exceeded with url: /v3/<PROJECT-ID> (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object 
at 0x7f5537e50400>: Failed to establish a new connection: [Errno -3] Temporary 
failure in name resolution'))")))
Sentry is attempting to send 0 pending error messages

I also tried ping

Pinging [] with 32 bytes of data:
Request timed out.

Is there any limit on API request?

Resolved. It was mistake from my side.

Glad you were able to resolve the issue, would you mind sharing the details in case we can improve our documentation or have the resolution here in case someone else has the same issue?