Spok Holdings, Inc., through its subsidiary, Spok, Inc., engages in the healthcare communication solutions in the United States, Europe, Canada, Australia, Asia, and the Middle East. Its products and services enhance workflows for clinicians and support administrative compliance. The company delivers clinical information to care teams when and where it matters to enhance patient outcomes; and provides GenA Pager, a one-way alphanumeric pager. It offers subscriptions to one-way or two-way messaging services, as well as alphanumeric pagers that are configurable to support unencrypted or encrypted operation; and ancillary services, such as voicemail, and equipment loss or maintenance protection services, as well as sells devices to resellers who lease or resell them to their subscribers. The company provides Spok Care Connect suite products for contact centers, clinical alerting and notification, mobile communications and messaging, and public safety notifications. In addition, it provides professional, software license updates, and product support services, as well as sells third-party equipment. It serves businesses, professionals, management personnel, medical personnel, field sales personnel and service forces, members of the construction industry and construction trades, real estate brokers and developers, sales and services organizations, specialty trade organizations, manufacturing organizations, and government agencies. The company was formerly known as USA Mobility, Inc. and changed its name to Spok Holdings, Inc. in July 2014. Spok Holdings, Inc. was founded in 1986 and is headquartered in Plano, Texas.