gistfile1.txt

ree-1.8.7-2011.03 :001 > GeoIpBlock.count
 => 6055096 

ree-1.8.7-2011.03 :005 > GeoIpBlock.first.e.class.name
 => "Fixnum" 

ree-1.8.7-2011.03 :006 > res = Benchmark.measure {  puts GeoLocation.by_ip('74.220.125.3').location };  puts res
San Francisco, CA
  0.000000   0.000000   0.000000 (  0.003826)

def self.locate(decimal_ip)
if block = where(:e.gte => decimal_ip).order("e ASC").limit(1).first
return block if block.s <= decimal_ip
end
end

if , using mongo, I can find the first geo_ip_block that has an IP address thats end range is greater than or equal to this decimal IP
and if my geo_ip_block object has a start value that is less than or equal to this decimal IP address
return the geo ip block that I found
otherwise return null