Signal & Syntax · Numbers and formats
What Is a Range Holder?
The range holder is the operator allocated a numbering range. For a number that has never ported, the range holder is also the serving network.The range holder is the operator allocated a numbering range. For a number that has never ported, the range holder is also the serving network.The range holder is the operator allocated a numbering range. For a number that has never ported, the range holder is also the serving network.
Also calledblock holder · original carrier
Example
Range holder O2 → Carrier Vodafone
Range Holder in Practice
Once a number ports, the range holder stops serving the number. Traffic routed on the range alone then reaches the wrong network. On a first port the range holder is also the Once a number ports, the range holder stops serving the number. Traffic routed on the range alone then reaches the wrong network. On a first port the range holder is also the Once a number ports, the range holder stops serving the number. Traffic routed on the range alone then reaches the wrong network. On a first port the range holder is also the donor networkdonor network. Porting never changes the range holder.. Porting never changes the range holder.. Porting never changes the range holder.
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Related Terms
Read the Guide
Guide
Mobile Number Portability and SMS Routing
Why the range holder is the wrong carrier for a ported number. Read the guide →Run the Checks on Your Own List
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