An international phone number wouldn't come up as an area code like that. It would be something along the lines of 011572-------
And it's Colombia, with an "o." Columbia is not a country. -_-

I have received the first call from this number at 4:24pm on 10/17/10. I did not answer since I did not recognise the area code. On 10/18 I received for call every 2hrs and again on 10/19. Searching further on this number - 57 is the country code for Columbia, followed by 2 is the city code of Cali and Palmira,Colombia. I reported the calls to my carrier and have this number blocked. BEWARE of unknown area codes!

received 2 calls from this number at different times during the day.  Whoever called did not leave a message.