Most countries have an emergency telephone number, also known as the universal emergency number, which can be used to summon the emergency services to any incident. This number varies from country to country (and in some cases by region within a country), but in most cases, they are in a short number format, such as 911 (United States and many parts of Canada),[13] 999 (United Kingdom),[14][15] 112 (Europe)[16][17] and 000 (Australia).[18]