Https://forum.skiffhq.com/t/complete-list-of-official-copyright-support-customer-cont-ct-n-u-m-b-e-r-s-in-the-usa-the-ultimate-detailed-guide/3231 https://forum.skiffhq.com/t/complete-list-of-official-copyright-support-customer-cont-ct-n-u-m-b-e-r-s-in-the-usa-the-ultimate-detailed-guide/3231