what is ecn number
Re-enter a valid e-mail address. This e-mail address must match the e-mail address you entered in the âE-Mail Addressâ box. Provide your 9-digit Social Security Number (SSN) or EDD Client Number (ECN). The ECN is a 9-digit number assigned to you by the EDD. It is used in place of an SSN when additional information is required by the EDD to verify your SSN. Enter your 10-digit EDD Customer Account Number.