List of businesses that may have UAN service

Government Institutes
United nation organizations
Ministries/ help lines Shipping Lines
Consumer Products Companies
Educational Institutes
Provincial Govt. Departments
Trading Companies
Motorway Police/FIA
Foreign Embassies
Insurance Companies
PTV/Radio Pakistan Stock Exchanges
Utility Services

How it Works:

UAN consists of 6 digits, preceded by 3 digit code of 111, common to all UANs. Example 111 - 20 20 20.
UAN operates on Existing telephone connections without disturbing normal phone number
UAN works both in multiline PABX and multi phone connections. The incoming call hunts for a free junction or free phone connecting instantly.
UAN service can also be used for facsimile