National Service Information, Inc (NSI) is a public record document search, filing, and retrieval firm located in Marion, OH and Indianapolis, IN. Our clients, representing Law Firms, Corporations, Mortgage Lenders, Banks, and Service Companies, depend on NSI to solve problems. NSI has a 30 year network of knowledge covering every county in Ohio and Indiana. NSI is THE resourch for county level document research, filing, and retrieval. From our regional jurisdictions to our current nationwide network, capable of Registered Agent Representation in every state and many international jurisdictions, NSI continues to solve problems for our clients. Corporate Documents, Registered Agent, UCC, county level search, filing, retrieval, and research. NSI, bring your problems.