What calls will Universal Call Blocking affect? - TekSavvy Community
<main> <article class="userContent"> <p>The criteria for universal network-level call blocking are as follows:</p><ul><li>The caller ID for international originated calls with less than 3 digits or exceeds 15 digits.</li><li>The caller ID contains a number that does not conform to a valid format under the NANP. For example:<ul><li>Numbers that are not 10 digits (exception for 7 digit numbers such as 310-XXXX)</li><li>Calls coming from a single number (111-111-1111)</li><li>Calls coming from invalid area codes</li><li>Calls with numbers that have a 0 or 1 in the 4th position of the telephone number i.e. 613-012-1234</li><li>Calls matching the telephone number of the person being called.</li></ul></li></ul><p><br></p> </article> </main>
