Search results with tag "Numbering plan"

香港電訊服務 號碼計劃 - Office of the ...

The Numbering Plan for Telecommunications Services in Hong Kong (SAR), China 香港電訊服務 號碼計劃 Issue Date 發出日期: 31.12.2021 (Last Update 最後修訂: 31.12.2021)

  Plan, Hong, Kong, Numbering, Hong kong, Numbering plan