Have a real business street address (not a PO box) and a phone number listed in directory assistance (411).
Bureaus and underwriters verify a business exists at a consistent, listed location and number.
Use a commercial address you control and list the business number with a phone provider / 411 directory.
Source: The three business bureaus (verification criteria)
A listed business line; a commercial address you control
This is general business-credit education, not financial, legal, or tax advice. Confirm specifics with a licensed professional and the official sources directly.