Businesses might have budget constraints

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Challenge: The cost for a VoIP provider or an international call center to terminate a call can differ significantly based on the country code of the destination number. Some countries have high termination rates, while others are relatively low.
Solution: Before initiating a call, the routing system first parses the "phone number country code." Based on this, it can then refer to a routing table that prioritizes connections through inter-carrier agreements or wholesale routes that offer the lowest cost for that specific country code, without compromising call quality. This is known as Least Cost Routing (LCR).
SMS Termination Rate Management:

Challenge: Similar to voice calls, the cost of sending an SMS dataset message (Application-to-Person, A2P SMS) varies greatly depending on the destination country code. Some countries have expensive SMS termination fees, while others are cheaper.
Solution: A2P SMS aggregators and bulk messaging platforms utilize the "phone number country code" to determine the optimal and most cost-effective SMS gateway to send the message through. This ensures that businesses are not overpaying for their international SMS campaigns.
Filtering for Budget Control:

Challenge: for communicating with certain high-cost countries.
Solution: By identifying the "phone number country code," systems can be configured to block or flag communication attempts to specific expensive destinations, preventing unexpected billing shocks. This provides greater control over international communication expenditures.
Targeted Campaign Management:

Challenge: Marketing budgets need to be spent efficiently. Sending messages to regions where engagement is historically low or costs are high might be inefficient.
Solution: The "phone number country code" helps segment contact lists by geography. Businesses can then apply different communication strategies or allocate budgets more effectively based on the cost-effectiveness and expected ROI of engaging with specific countries.