What does reference data contain? Reference data can contain virtually any information that is meaningful to your company or that further enhances the initial network/switch feed, for example: jurisdictional data, localization data, trunk group provisioning, billing system records, third-party application data, internal business/operational support systems (B/OSS) files, carrier rates, phone numbers, wireless/mobile data, carrier data, company-specific data you maintain in spreadsheets, etc.