800-523-3273

I received 2 phone calls from that phone number since yesterday. Don't know, who they are, why they are calling. If they keep calling I will report them to the do-not-call list.

This is a number for Continental Airlines.  I think it's the automated trip alert number.

Continental Airlines - they confirm your flight information and leave you the confirmation number, so you can check in online.

Yes, it's Continental.  Their system called me once and hung up (or just didn't leave a message).  One hour later came their call reminding me that I could check in on-line.

It's Continental Airlines - flight reminder service

Right, Continental  Airlines automated call to confirm flight details.

I receive a voice mail from this number. It said it`s from Continental but the strange thing is I didn`t book a flight from this airline. It`s weird

Now that United Airlines and Continental Airlines have merged, this is the United Airlines phone check-in service. I got a call from this number about twenty hours before my United Airlines flight.

I repeatedly get call from this number.  I know its an airline, but I have not booked a flight in years.  I have no idea how they have my number.  Its calls multiple times a day....thern stops for a couple weeks, then starts back again.

Sounds to me like your phone number is on some regular traveller's profile, and every time they book a flight you start getting calls, have you tried calling the airline?