Failed to connect to bitbucket.org port 443: Network is unreachable

I'm unable to push or pull my code to one of my Bitbucket repositories since yesterday. It returns the following error -
*fatal: unable to access 'https://mohak_juneja@bitbucket.org/hopinlumos/hopin_api.git/': Failed to connect to bitbucket.org port 443: Network is unreachable
*

git remote -v returns -
*heroku https://git.heroku.com/glacial-eyrie-16329.git (fetch)
heroku https://git.heroku.com/glacial-eyrie-16329.git (push)
origin https://mohak_juneja@bitbucket.org/hopinlumos/hopin_api.git (fetch)
origin https://mohak_juneja@bitbucket.org/hopinlumos/hopin_api.git (push)
*

I'm able to deploy my code to Heroku but I'm unable to update my bitbucket repository with new code.