Sterling-based Neustar agreed to buy Targusinfo for $650 million in cash, the companies announced Tuesday, in a deal that Neustar executives said will bolster its telecommunication services.

Targusinfo, a private company headquartered in Vienna, generated roughly $149 million in revenue last year providing real-time information and analytics that allow callers to identify and verify one another through services such as Caller ID.

Neustar also operates in the information technology space, routing telephone calls and text messages from one person to another across different landline and wireless networks.

The company has had to contend with the explosion in mobile data as people flock to smartphones and other portable devices that tap the Internet to share text, video and photos.

“The combined company is in the perfect position to provide addressing services, analytics and insights to companies that want to store and distribute their information in a cloud environment,” chief executive Lisa Hook said in an interview.

Neustar also released its third-quarter earnings on Tuesday. The company’s revenue for the three months ended Sept. 30 was $152.5 million (51 cents a share), up 17.8 percent from $129.4 million (39 cents) during the same period last year.

Shares of Neustar closed at $28.04 on Tuesday, up 1.6 percent, or 44 cents, from the day before.