That doesn't work. For example, The Hartford Fire Insurance company's address is HARTFORD FIRE INS CO 1 HARTFORD PLZ HARTFORD CT 06115-1703 Note

That doesn't work. For example, The Hartford Fire Insurance company's address is HARTFORD FIRE INS CO 1 HARTFORD PLZ HARTFORD CT 06115-1703 Note the zip. Leading zero, and the last 4 digits. There are other businesses at the same address, with different zip codes. EG HARTFORD FINANCIAL SERVICES 1 HARTFORD PLZ HARTFORD CT 06115-1709 Etc, etc. Zip codes in the US are text strings, that happen to be composed of the digits 0-9 and a hyphen.