2 digit ruby symbols are used to specify a country. See README.md for usage details.
Countries with supported postcodes:
:us => "United States"
:ca => "Canada"
:gb => "United Kingdom (Great Britain)"
:cn => "China"
:jp => "Japan"
:de => "Germany"
:fr => "France"
:au => "Australia"
:it => "Italy"
:ch => "Switzerland"
:at => "Austria"
:es => "Spain"
:nl => "Netherlands"
:be => "Belgium"
:dk => "Denmark"
:se => "Sweden"
:no => "Norway"
:br => "Brazil"
:pt => "Portugal"
:fi => "Finaland"
:ax => "Aland Islands"
:kr => "Korea"
:tw => "Taiwan"
:sg => "Singapore"
:dz => "Algeria"
:ad => "Andorra"
:ar => "Argentina"
:am => "Armenia"
:az => "Azerbaijan"
:bh => "Bahrain"
:bd => "Bangladesh"
:bb => "Barbados"
:by => "Belarus"
:bm => "Bermuda"
:ba => "Bosnia and Herzegovina"
:io => "British Indian Ocean Territory"
:bn => "Brunei Darussalam"
:bg => "Bulgaria"
:kh => "Cambodia"
:cv => "Cape Verde"
:cl => "Chile"
:cr => "Costa Rica"
:hr => "Croatia"
:cy => "Cyprus"
:cz => "Czech Republic"
:do => "Dominican Republic"
:ec => "Ecuador"
:eg => "Egypt"
:ee => "Estonia"
:fo => "Faroe Islands"
:ge => "Georgia"
:gr => "Greece"
:gl => "Greenland"
:gt => "Guatemala"
:ht => "Haiti"
:hn => "Honduras"
:hu => "Hungary"
:is => "Iceland"
:in => "India"
:id => "Indonesia"
:ie => "Ireland"
:il => "Israel"
:jo => "Jordan"
:kz => "Kazakhstan"
:ke => "Kenya"
:kw => "Kuwait"
:la => "Lao People's Democratic Republic"
:lv => "Latvia"
:lb => "Lebanon"
:li => "Liechtenstein"
:lt => "Lithuania"
:lu => "Luxembourg"
:mk => "Macedonia"
:my => "Malaysia"
:mv => "Maldives"
:mt => "Malta"
:mu => "Mauritius"
:mx => "Mexico"
:md => "Moldova"
:mc => "Monaco"
:ma => "Morocco"
:np => "Nepal"
:nz => "New Zealand"
:ni => "Nicaragua"
:ng => "Nigeria"
:om => "Oman"
:pk => "Pakistan"
:py => "Paraguay"
:ph => "Philippines"
:pl => "Poland"
:pr => "Puerto Rico"
:ro => "Romania"
:ru => "Russia"
:sm => "San Marino"
:sa => "Saudi Arabia"
:sn => "Senegal"
:sk => "Slovakia"
:si => "Slovenia"
:za => "South Africa"
:lk => "Sri Lanka"
:tj => "Tajikistan"
:th => "Thailand"
:tn => "Tunisia"
:tr => "Turkey"
:tm => "Turkmenistan"
:ua => "Ukraine"
:uy => "Uruguay"
:uz => "Uzbekistan"
:va => "Vatican City"
:ve => "Venezuela"
:zm => "Zambia"
:as => "American Samoa"
:cc => "Cocos (Keeling) Islands"
:ck => "Cook Islands"
:rs => "Serbia"
:me => "Montenegro"
:cs => "Serbia and Montenegro"
:yu => "Yugoslavia"
:cx => "Christmas Island"
:et => "Ethiopia"
:fk => "Falkland Islands (Malvinas)"
:nf => "Norfolk Island "
:fm => "Micronesia"
:gf => "French Guiana"
:gn => "Guinea"
:gp => "Guadeloupe"
:gs => "South Georgia and the South Sandwich Islands"
:gu => "Guam"
:gw => "Guinea-Bissau"
:hm => "Heard Island and McDonald Islands"
:iq => "Iraq"
:kg => "Kyrgyzstan"
:lr => "Liberia"
:ls => "Lesotho"
:mg => "Madagascar"
:mh => "Marshall Islands"
:mn => "Mongolia"
:mp => "Northern Mariana Islands"
:mq => "Martinique"
:nc => "New Caledonia"
:ne => "Niger"
:vi => "Virgin Islands, U.S."
:pf => "French Polynesia"
:pg => "Papua New Guinea"
:pm => "Saint Pierre and Miquelon"
:pn => "Pitcairn"
:pw => "Palau"
:re => "Reunion"
:sh => "Saint Helena"
:sj => "Svalbard and Jan Mayen"
:so => "Somalia"
:sz => "Swaziland"
:tc => "Turks and Caicos Islands"
:wf => "Wallis and Futuna"
:yt => "Mayotte"