FreeDNCScrub

Check a Phone Number

Instantly check any US phone number against our database of over 248 million Do Not Call numbers.

Enter any US phone number format. We'll normalize it automatically.

How the Single Number Check Works

Enter any US phone number in any format — we handle the normalization. Our system strips formatting, validates the number as a 10-digit US phone number, and checks it against the National Do Not Call Registry.

Accepted formats include: (555) 123-4567, 555-123-4567, 5551234567, +1-555-123-4567, and more. The check is instant and completely free.

For checking multiple numbers at once, try our batch CSV scrubbing tool.