New Jersey Statutes Title 4. Agriculture and Domestic Animals 4 § 19-33

The department shall promulgate regulations establishing a uniform Statewide system for municipal registration of potentially dangerous dogs. The regulations shall assign each municipality or other authority registering potentially dangerous dogs a three number code. This three number code shall comprise the last three digits of each registration number issued by that municipality or authority for potentially dangerous dogs and shall be preceded on each dog's identification by a number sequentially issued by the municipality.