The central register for area code + prefix is here: http://www.nanpa.com/report... | Hacker News

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		pudquick on Jan 5, 2013 \| parent \| context \| favorite \| on: Show HN: Send SMS to your number for free from she... The central register for area code + prefix is here: http://www.nanpa.com/reports/reports_cocodes_assign.html However, sometimes the companies listed are subsidiaries and you can't tell the 'major' cellular provider for someone at a particular number.

amatix on Jan 5, 2013 [–]

In the US, does number portability between networks exist? In NZ, it causes problems with SMS gateways, which seem to (in general) naively use the prefix as the sole means of identifying which operator for a number.

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