What does OPN stand for?

What does OPN mean?

OPN	Opinion Community » Media
OPN	Opinion Community » Law
OPN	Operations Business » General
OPN	Operations Governmental » Military
OPN	Osteopontin Medical » Physiology
OPN	Ordering Part Number Business » General
OPN	Online Pagan Networks Internet
OPN	Oregon Public Networking Community
OPN	Open Projects Network Business » General
OPN	Active options (Exact) Computing » File Extensions
OPN	Ora Pro Nobis (Latin: Pray For Us) Community » Religion
OPN	Outage Performance Monitoring Computing » Networking
OPN	Outage Performance Monitoring Computing » Telecom
OPN	Order Part Number Business » General
OPN	Okinawa Peace Network Governmental » Politics
OPN	Other Procurement, Navy funding Governmental » Military
OPN	Other Procurement, Navy funding Governmental » US Government
OPN	Our People Network Community » Non-Profit Organizations
opn	operation Governmental » Military
opn	operation Medical