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Dedicated Internet Access service designed exclusively for corporations to cater for their internet communications needs.

China Unicom backbone internet network(AS4837) has over 400 PoPs all over the world, and we have over 330 Metropolitan Area Network in Mainland China.

In Mainland China, we can provide this service with our extensive MAN network, we can also utilize our premium bearer network(AS9929) provides this service, which is light-loaded and has much better performance.

Overseas, we can leverage our international network to provide you with DIA service with flexible usage patterns. Besides the standard DIA service, We can provide flexible bandwidth combinations (e.g., pure China, pure international, China International orientation), we can also utilize our premium bearer network(AS9929) to provide Premium DIA service.

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Key Benefts For Your Business

Massive User Resources

  • Over 80 Million Fixed-Line subscribers in China
  • Over 300 Million Mobile subscribers in China
  • Interconnect with over 60 Global Carriers / ISPs


  • Redundancy Port
  • Burstabe Bandwidth
  • Directional Charging Scheme

Value Added Service

  • Looking Glass
  • BGP community Enabled
  • IPv6 Enabled
  • Remote Cleaning Service
  • Real-time Traffc Monitoring
  • Monthly Usage Report

Network Capability

  • Over 270T global Backbone Bandwidth
  • Over 2200G Direct connection
  • Over 400 PoPs Worldwides


  • Fully redundant network
  • High-performance SLAs
  • 7 x 24 x 365 NOCs

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