
If you are looking for information on the holders of unpooled (NXX) exchanges, it can be found on the website of the North American Numbering Plan Administrator (NANPA) at this location: http://www.nationalnanpa.com/enas/coCodeReportUnsecured.do?reportType=7
If you are looking for information on pooled exchanges (NXX-X), it can be found on the website of the National Number Pool Administration, which is here:
http://www.nationalpooling.com/
Select the first QuickLink: Block Reports
- AC_270_1.html
- AC_502_1.html
- AC_606_1.html
- AC_859_1.html