Thank you for your question and welcome to Just Answer.
Looking up a person by a phone number is possible. You'll need to use a reverse lookup such as AnyWho:
Many cell phones are not available. But if it's a land line it should be.
Email addresses are much harder, as anyone can get a free email address and not put their contact information when registering. There are sites like this one that claim to be able to have records, but I would be skeptical:
http://www.theemailfinder.com/
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Ryan
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