Proof of address — How to quickly verify addresses? Introduction Proof of address is required by most service providers to verify that you live at the address on your credit report. While some providers can verify addresses by mail, others require you to visit their office in person. You can also use an online verification service or have them mail you a postcard with a unique PIN number. When you get to the business, they’ll ask you a few questions about your address, then enter the code into their system and verify that the information is correct. Proof of address is required by most service providers to verify that you live at the address on your credit report. Proof of address is required by most service providers to verify that you live at the address on your credit report. This is because lenders want to know that you can pay back any loans, mortgages or credit cards they give to you. Proof of address can be in many forms including: Utility bill (electric, gas, water/...