Quark Communications Inc. (commonly known as Quark Communications Inc.) is a mobile network operator in Guyana assigned PLMN code 738-003 by the national telecommunications authority.

The MCC 738 identifies Guyana, while MNC 003 uniquely identifies this operator within the country. Together they form the PLMN (Public Land Mobile Network) identifier used by mobile devices for network selection, SIM card identification, and international roaming.

This assignment was last reported in ITU Operational Bulletin #1280 (Nov. 15, 2023). Search all MCC/MNC codes or view all Guyana operators .