Routing & Softswitch
Ref: ITU-T Recommendation E.164 / GSMA PRD IR.67
MNP
Mobile Number Portability - Real-Time Number Routing & HLR
Direct Telecom Definition • Carrier Industry Standard
The carrier telecommunications capability allowing mobile subscribers to retain their MSISDN phone number when switching from one network operator to another.
Key Takeaways & Executive Summary
- Enables mobile phone users to keep their telephone number when changing network operators.
- Real-time MNP dips identify the current serving MNO (MCC/MNC) and Local Routing Number (LRN).
- Crucial for wholesale carriers to optimize least cost routing and ensure accurate A2P SMS delivery.
Technical Definition & Carrier Engineering Standards
Mobile Number Portability (MNP) enables mobile subscribers to retain their existing phone numbers when transferring service between competing Mobile Network Operators (MNOs). For wholesale voice carriers and A2P messaging aggregators, real-time MNP database queries and Home Location Register (HLR) dips are vital to determine the true recipient operator (Routing Number / LRN), eliminating misrouted calls, reducing transit hops, and preventing billing discrepancies.
Connected Software & Carrier Telecom Corridors
High-Volume SMS Corridors
Enterprise Dispatch Software
Frequently Asked Questions
What is Mobile Number Portability (MNP)?
MNP is a telecom service that allows mobile subscribers to switch cellular carriers while retaining their existing mobile phone number.
Why is MNP lookup essential for enterprise messaging?
MNP lookups identify the subscriber’s active network operator so SMS gateways can route messages directly to the correct carrier, avoiding failed deliveries and expensive routing surcharges.