Mailbox Number And Combination For this answer, please log into MyOC. For more information, please see our instructions on how to Log into MyOC. Mailbox and Housing PIN Number Information Go to myOC on your laptop or iDevice. Please see our instructions on how to Log into MyOC for more information. Click Services. Click Mailbox and Housing Pin Number Information Contact the Mail Room View Location View Hours Phone: 405-425-5900 Email: firstname.lastname@example.org Related articles Open Your Mailbox OC Mailing Address Log into MyOC Forms Of Payment At Mailroom Respondus Lockdown Browser - Mac Install Comments 0 comments Please sign in to leave a comment.