50.19.206.49 resolves to:
Array
(
    [known] => true
    [countryid] => 254
    [country] => United States
    [fips104] => US
    [iso2] => US
    [iso3] => USA
    [ison] => 840
    [internet] => US
    [capital] => Washington, DC 
    [mapreference] => North America 
    [nationalitysingular] => American
    [nationalityplural] => Americans
    [currency] => US Dollar
    [currencycode] => USD
    [population] => 278058881
    [countrytitle] => The United States
    [regionid] => 165
    [region] => Texas
    [regioncode] => TX
    [adm1code] =>     
    [cityid] => 11039
    [city] => Dallas
    [latitude] => 32.7961
    [longitude] => -96.8024
    [timezone] => -06:00
    [locationcode] => USTXDALL
    [dma] => 623
    [certainty] => 94
    [isproxynetwork] => false
    [mapbytesremaining] => Free
)
REMOTE_ADDR resolves to:
50.19.206.49
HTTP_GEOBYTESIPADDRESS resolves to:
50.19.206.49
HTTP_GEOBYTESLOCATIONCODE resolves to:
USTXDALL
There is an explaination of how this works here: http://forums.geobytes.com/viewtopic.php?f=28&t=462