NOTE: As of Jan. 2012 the entity known as CallerID4U was granted Certificate of Authority to Provide Telecommunications Service in the state of Oregon, USA
http://apps.puc.state.or.us/edockets/docket.asp?DocketID=17253
US Immigration charges filed against a Alex-Synthey MADUNO in 1994 (believed to be the brother of Paul Maduno, also mentioned in the docket).
http://openjurist.org/40/f3d/1212/united-states-v-maduno
Quote,
"As we have noted in an earlier investigation, CallerId4U’s phone numbers were the subject of 138,184 consumer complaints submitted to the FTC between January 1, 2012 and November 30, 2012. In these complaints, consumers alleged to have received pre-recorded telemarketing calls in violation of Federal law. CallerId4u enters into revenue sharing agreements with the telemarketers who are responsible for initiating these outbound calls."