The following countries are considered tier 1 countries.
| Country Name | ISO-3166 Alpha-2 Code |
| Australia | AU |
| Canada | CA |
| New Zealand | NZ |
| United Kingdom | GB |
| United States | US |
The following countries are considered tier 1 countries.
| Country Name | ISO-3166 Alpha-2 Code |
| Australia | AU |
| Canada | CA |
| New Zealand | NZ |
| United Kingdom | GB |
| United States | US |