Free look ups of 1-888 numbers can be performed at ReversePhoneLookup.com, SearchYellowDirectory.com and WhitePages.com, as of 2015. This is a free service on all three websites.
To perform a reverse look up of a 1-888 number on ReversePhoneLookup.com, enter the phone number without the leading 1 and click Search. The name and address of the owner is displayed.
To perform a reverse look up on SearchYellowDirectory.com, click Reverse Phone on the home page. On the next page, enter the phone number with the leading 1 and click Search.
To perform a reverse look up on WhitePages.com, click Phone on the home page and enter the number on the next page without the leading 1.