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The Top landline Providers are:
Verizon(same company who also does the Cell Phones): http://www22.verizon.com/home/phone/
Pioneer Telephone: https://www.securelongdistanceorder.com/order.asp?agentid=PT5928&agentsid=11684
Powernet Global: https://portal.pngcom.com/order/index.php/welcome/start
These biggest landline and most competative and reliable would AT&T and and Verizon, so those would be the first two to check.
I hope thhis information would help you. I am in Florida and for my landline I have had AT&T during the storms we have and have always had phone service.