Oh yeah this is the site that said it was a landline:

http://www.switchboard.com/phone/1-338-645-7890

I got calls from this number over the past 3 days (and 12 times from 8 am to 11 am today, it makes it tough because I have college and was taking a test when it called, luckily the professor let it slide this time), and when I look back at my past calls, they called 4 months ago many times also.

Also when I looked up the number on different sites I found out that it is a landline somewhere, don't know if that matters.

Does anybody else getting calls from this number?

This number 338-645-7890 has called me 3 times in a two period. Researching the area code it is not in use any more.

this number has called me ten times in a row . I did not answer because i was overseas. annoying!!

Do not call

Called me once today...no one would say anything so I just hung up! B*****ds!

called twice. did not answer. no voicemail left

please do not call me! they called me three times today and no one answers!

They call back to back. Can't do nothing but block them.

They called me about my IP address being used overseas.  

This number is calling non-stop, has called 6 times in the last hour!

this number keeps calling..

Called once, I didn't answer, no message. Called again, I answered. Silence, then it rang as if I were calling them. Someone with a very thick Indian accent answered, asked how I was and then told me I might be a victim of identity theft. I said we weren't interested and hung up. Have not yet received a call back.