The guys over at MobileCheck reckon that between 10-20% mobile numbers decay per year, which can translate to large sums of money simply being poured down the proverbial plug hole!
Need a bit more technical jargon?
What is HLR Checking?
HLR Lookup uses a global system to check the real time status of any GSM mobile phone number. By making a query to the Home Location Register (HLR), the service determines:
• Current status of the number (Active, switched off or dead)
• Current network
• Original network
• Roaming information
All mobile phone operators are connected by a network known as the Signalling System No. 7 network (SS7). The SS7 forms the backbone of the SMS text messaging system, and it is used by mobile phone operators to exchange information.
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