US Financial Reference Directories

Every day, thousands of businesses around the world turn to Accuity for precise financial industry information.

As a leading provider of data to the global financial and business communities since 1836 and the Official Registrar of ABA Routing Numbers since 1911, organisations depend on Accuity for our high-quality intelligence.

Find the best directory for your organisation below.

Payments Directories

Accurate and up-to-date bank routing information saves you time, money and resources.

Whether you are searching for routing numbers, a telephone number for return items or information to facilitate your payment processes, we have a directory to fit your needs.

  • ABA Key to Routing Numbers (Keybook)
    Find accurate details for current US routing numbers to help facilitate more efficient check processing, wire transfers, and drafts. Published in January and July, this directory also summarizes key changes to the ABA Routing Number Policy, includes a dedicated section listing retired and inactive routing numbers from the last five years and adds descriptions of the new types of routing numbers, including electronic transaction identifiers (ETI). Keybook includes Reg CC information to help expedite the check clearing process, providing the most comprehensive coverage of US financial institutions’ telephone numbers for return items, adjustments, and official check verification. This information facilitates compliance with Regulation CC to help your company avoid stiff penalties and fines.
  • ACH Participant Directory 
    Produced in conjunction with Nacha, this biannual directory delivers ACH network information for processing ACH transactions. The ACH Participant Directory allows users to match a name to a number using the numerical listing or search by state and institution name, verify routing numbers and ACH eligibility without prenoting and identify addresses and telephone numbers for notifications of change.

Financial Institutions Directories

A comprehensive collection of directories from the company that wrote the book on bank and banking data.

Our Financial Institution Directories offer the broadest array of bank information available in the market. Whether you’re looking for bank branch information, in-depth information on US Federal Reserve districts or even looking for prospects and partners in the financial marketplace, we have a title that will meet your needs.

  • American Financial Directory (AFD)
    AFD provides access to specific data for every bank, savings and loan, holding company and major credit union in the United States. This comprehensive five-volume directory offers a variety of information that includes direct telephone numbers for key payments personnel, websites, institution mergers, name changes, ACH membership status and more. The AFD also includes convenient indexes and can be customized for those concentrating on a specific area of the country.

The Bond Buyer's Municipal Marketplace® (known as the Red Book)

Access our most complete and current database of municipal bond firms and professionals.

The Bond Buyer’s Municipal Marketplace, more commonly known as the Red Book, provides you with access to the most complete and current database of municipal bond firms and professionals. Since the 1930s, the Red Book had been the definitive source that senior decision makers and issuers rely on daily to access information about municipal bond market participants and potential partners. Providing comprehensive coverage of this unique market, the Red Book contains the key information you need to identify and connect with contacts. This information is available both in print as online at