US telephone and internet service provider CenturyTel Inc. agreed to buy Embarq Corp. for $5.8 billion in stock, helping the phone company to almost quadruple its already existing 2.1 million phone lines.  Embarq, the former landline arm of Sprint Nextel Corp. which split in 2006, provides service to rural areas and smaller cities in 18 states across the US, and is the main telephone company for Las Vegas.   CenturyTel covers mainly rural areas of regions in the South and Midwest, from Louisiana to Minnesota, and also provides service to Colorado and the Northwest.

