Validate United States bank routing numbers(ABA numbers) by Routing Number

Here are some links to various information on performing this function.

http://www.webservicex.net/aba.asmx?op=GetABADetailsByRoutingNumber

http://en.wikipedia.org/wiki/Routing_transit_number

http://www.scottklement.com/archives/ftpapi/200701/msg00017.html

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