We are a provider of CNAM ( Caller ID Name ) database services to VoIP users and service providers, specializing in Asterisk and Linux based solutions. CallerIDService.com is a leading provider of CNAM / Caller ID Name services for VoIP providers and PBX systems. We support United States and Canadian phone numbers. Our service integrates seamlessly with all types of PBX systems including Asterisk, trixbox, Fonality, Digium, Elastix, FreePBX, FreeSWITCH and more! We have access to all of the major CNAM databases in the United States and Canada, something we're proud to offer. Use our easy to use examples to begin delivering caller ID name to your PBX or VoIP customers in minutes. Our super low rates, high quality results and unprecedented features set us apart from our competitors. You'll have no monthly fees, instant setup and automatic CNAM query price reductions based on your monthly query volume, features that our competitors simply don't provide! In addition to our already low prices, since we're so confident in the quality of our CNAM results in comparison to our competition, you'll pay a deeply discounted price per each query that returns an "UNAVAILABLE" result, saving you money!