BlackBerry service is facing limits or bans in some countries over the issue of government access to information on its network.

VOA: special.2010.08.06

In 1889, the German Government decided to use the postal service as an information network to create Social Security.

889年，德国政府决定将邮政用作,建立的社会保障的信息网络。

耶鲁公开课 - 金融市场课程节选

About thirty years ago, Motorola hooked up with Nextel to bring national two-way push-to-talk service to businesses and government through a public infrastructure network.

FORBES: Connect

Because almost every IP address has been assigned to a company, government, agency or ISP (internet service provider) this helps narrow down which network the messages in this case came from.

BBC: Email trail helped FBI crack Petraeus case