In order to judiciously distribute international phone numbers between different countries and cities of the world or to mobile phone providers the telephone numbering plan is used. It would be still not right to compare dial plans (international calling codes) with numbering plans. In places like Australia or Canada there is a closed numbering plan that involves special length region codes and local phone numbers.
There is also an open numbering plan working in different lands that haven’t determined it yet. In this numbering plan the size of the dialling code and local telephone number can change. Dialling the phone numbers assigned by this plan you should be sure to always use the figures of the subscriber’s number, remembering that the digits of the area calling code mustn’t be in any case dialed.
And now the numbering plans as well as international dialing codes are different from land to land despite that the International Telecommunication Union (ITU) makes frequent tries to unify the system. For example double zero was meant to serve as an international access code. Several countries have agreed to the suggestion and entered the combination, still since assigning it was not binding for the countries in a number of them like the USA the calling codes remained as they used to be. Mixed up? Try our brand new reverse phone lookup!
The international numbering plan lets arrange area codes which mean the calling code for one or a number of countries. Specially to control the codes for international calls there is the E.164 rule set. It points the normal extension of the full number. It is just supposed that the country itself distributes the numbers on its land. So here are the variants of regional country codes with:
- The extension generally set by country norms as it is in Canada (three units) or in Australia (one digit).
- Non-defined code norms. So in countries like Austria the code differs between 2 and five, on japanese isles – between one and 5 and in Peru and Syria the dialling code includes from 1 up to 2 figures.
- The norms of big numbers that simply contain the area dialing code. They use it in some countries like Spain. These are the specialties of the “closed” numbering plan. As for some of the areas, they apply 0 as a trunk dialing code. It’s spread in lands like Belgium, Switzerland, african countries or others.
Naturally the cost of the call is usually dependable on the area dialling code. It’s commonly not so expensive to call on the numbers with your or neighboring dialing code then on the numbers having area dialling codes of other regions.
But as in the USA the costs for local calls are defined by the state services while trunk calls are defined by competition, it appears so that local calls seem to be more expensive.
But there are several places in United States where area calling codes cover a truly large area. In this case various costs are applied according to the interval between the subscribers.
The rates are usually set for territory segments which are around 0-6, 12 miles and so on. Generally they are determined by rate centers. But as the regulation of home calling services was finished that all changed.
Today it’s going popular between the customers to use the so-called “all-you-can-eat” plan (an assigned price of nearly $30 monthly as reported for this spring letting call to any part of States).
There may be extraordinary area calling codes. They are created usually for mobile phone systems in those lands where they are covered by the user or for free, premium accounts.
There as well may be some special circumstances. E.g. in places like Egypt dialing codes evaluate nothing because the prices stay the same for all the territory and in United Kingdom the dialing code is complete of 2 segments every one with its cost.