In an effort to boost revenue at the top streaming service provider, Netflix has intensified its raid on subscribers who share their passwords with individuals outside of their immediate family.

"A Netflix account is for use by one household," the company said in a statement.

In the beginning of the year, Netflix stated that more than 100 million households shared accounts. Which "impacts our ability to invest in great new TV and films," stated the company.

In a few markets, Netflix has tried out "shared" or "borrower" accounts, which allow customers to add new users for a fee or move watching histories to different accounts. It declared on Tuesday that more than 100 additional countries would now be covered by the policy.

"This account-sharing initiative helps us have a larger base of potential paying members and grow Netflix long term," Co-Chief Executive Ted Sarandos said on an earnings call.

The streaming service giant told financial analysts recently that it had delayed a broad crackdown on sharing of account passwords "to improve the experience for members."

Netflix said it made sure subscribers have seamless access to the service away from home or on various devices such as tablets, TVs or smartphones.