A read model is the target audience for a product. It takes events produced by the domain and uses them to build and maintain a model specialized for reads, that is, queries. North American Numbering Plan Administration The entity that assigns and manages phone numbers for Canada, the U.S. and its territories, and the. NANPA announced Thursday that the PUC gave the go ahead to make 726 San Antonio's newest area code. This was before NANPA was created, but the idea was born there.