54.81.68.185 resolves to:
Array
(
    [known] => true
    [countryid] => 43
    [country] => Canada
    [fips104] => CA
    [iso2] => CA
    [iso3] => CAN
    [ison] => 124
    [internet] => CA
    [capital] => Ottawa 
    [mapreference] => North America 
    [nationalitysingular] => Canadian
    [nationalityplural] => Canadians
    [currency] => Canadian Dollar 
    [currencycode] => CAD
    [population] => 31592805
    [countrytitle] => Canada
    [regionid] => 37
    [region] => Ontario
    [regioncode] => ON
    [adm1code] => CA08
    [cityid] => 1206
    [city] => Toronto
    [latitude] => 43.6670
    [longitude] => -79.4170
    [timezone] => -05:00
    [locationcode] => CAONTORO
    [dma] => 
    [certainty] => 97
    [isproxynetwork] => false
    [mapbytesremaining] => Free
)
REMOTE_ADDR resolves to:
54.81.68.185
HTTP_GEOBYTESIPADDRESS resolves to:
54.81.68.185
HTTP_GEOBYTESLOCATIONCODE resolves to:
CAONTORO
There is an explaination of how this works here: http://forums.geobytes.com/viewtopic.php?f=28&t=462