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|Typical format||'number and character'|
|Country calling code||+856|
|International call prefix||11|
|List of Laos dialing codes|
|020|| Mobile SIM (All Carrier In Laos) Lao Telecom: 020 5xxxxxxx, |
ETL Co. Ltd: 020 2xxxxxxx, T-Plus Lao: 020 7xxxxxxx,
Unitel Lao: 020 9xxxxxxx
|023||Vientiane & Xaisomboun|
|030||Prepaid & Wireless Portable Phone (All Carrier In Laos)|
Lao Telecom: 030 5xxxxxx,
ETL Co. Ltd: 030 2xxxxxx, T-Plus Lao: 030 7xxxxxx,
Unitel Lao: 030 9xxxxxx ; 030 4xxxxxx
Starting January 1, 2012, fixed lines will be allowed to dial directly to other provinces/countries, but still using open dialing plan. To dial to other province, dial area code+phone number (0xx-xxxxxx), and to dial to other countries, dial 00+country code+phone number.
Before 2012, dialing to other provinces is 101, then wait for operator, the same thing as to other countries, but to other countries is 100. Before 2012, mobile phones are already allowed to dial to other provinces/countries directly.
A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls instead of incurring charges to the originating telephone subscriber. For the calling party, a call to a toll-free number from a landline is free of charge.
Subscriber trunk dialling is a telephone system allowing subscribers to dial trunk calls without operator assistance. The term was introduced when it first became possible for long-distance calls to be dialled directly, and is now rarely used where calls to any destination can be dialled.
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of administrative regions of the public switched telephone network (PSTN) and they are also present in private telephone networks. For public number systems, geographic location plays a role in the sequence of numbers assigned to each telephone subscriber.
Telephone numbers in the United Kingdom are administered by the UK government's Office of Communications (Ofcom). For this purpose, Ofcom established a telephone numbering plan, known as the National Telephone Numbering Plan, which is the system for assigning telephone numbers to subscriber stations.
In Argentina, area codes are two, three, or four digits long. Local customer numbers are six to eight figures long. The total number of digits is ten, for example, phone number (11) 1234-5678 for Buenos Aires is made up of a 2-digit area code number and an 8-digit subscriber's number, while (383) 123-4567 would be an example of a Catamarca number.
Numbers on the Irish telephone numbering plan are regulated and assigned to operators by ComReg.
A trunk prefix is a digit sequence to be dialed before a telephone number to initiate a telephone call for the purpose of selecting an appropriate telecommunications circuit by which the call is to be routed.
Widespread UK telephone code misconceptions, in particular brought on by the Big Number Change in 2000, have been reported by regulator Ofcom since publication of a report it commissioned in 2004.
The dialling plan for mobile networks and new landline operators is closed; all subscriber numbers must be dialled in full. For landline numbers starting with 02, the dialling plan used to be open; the trunk digit and area code could be omitted if the caller was in the same area code as the callee. However, starting May 3, 2008, all landline numbers must be dialled in full.
International telephone calls are those made between different countries. These telephone calls are processed by international gateway exchanges (switches). Charges for these calls were high initially but declined greatly during the 20th century due to advances in technology liberalization. Originally they were placed via long-distance operators. The calls were transmitted by cable, communications satellite, radio, and more recently, fiber optics and Voice over Internet Protocol (VoIP). International direct dialling was introduced in the 1970s, so calls can be dialed by country code without an operator.
The New Zealand telephone numbering plan describes the allocation of telephone numbers in New Zealand and the Pitcairn Islands.
Telephone numbers in Italy are managed by the Autorità per le Garanzie nelle Comunicazioni (AGCOM), a national regulatory authority for the communication industry located in Rome.
Telephone numbers in Pakistan are ten digits long. Landline numbers and mobile numbers have different structures. Geographically fixed landline are prefixed by an area code which varies in length depending on the significance of the place. Mobile numbers are prefixed (03) followed by a code indicating the telephone operator. The international country code for Pakistan is '+92'.
Telephone numbers in India are administered under the National Numbering Plan of 2003 by the Department of Telecommunications of the Government of India. The numbering plan was last updated in 2015. The country code "91" was assigned to India by the International Telecommunication Union in the 1960s.
Telephone numbers in Russia are under a unified numbering plan with Kazakhstan, both of which share the international code +7. Historically, +7 was used as the country calling code for all of the Soviet Union. Following the Soviet break-up, all of its former republics, save for Russia and Kazakhstan, switched to new country codes. Following Abkhazia's secession from Georgia, Abkhazia switched to the Russian telephone codes +7 840 for landlines and +7 940 for mobile phones, though it still can be reached via the Georgian telephone code +995 44. After the Annexation of Crimea by the Russian Federation in 2014, the Republic of Crimea switched to the Russian telephone codes +7 978 for mobile phones and +7 365 for landlines, while the city of Sevastopol switched to the codes +7 978 for mobile phones and +7 869 for landlines, since 7 May 2015.
The following telephone numbers in Armenia are destination codes for international calls terminating in Armenia as well as the procedures for dialing internationally from within Armenia.
The national conventions for writing telephone numbers vary by country. While international standards exist in the form of the International Telecommunication Union sector ITU-T issued recommendation E.123, national telephone numbering plans define the format and length of telephone numbers assigned to telephones.
There were changes to the telephone numbering plan in Georgia which were expected to be completed by the end of 2011. This article is being updated after all the major changes, also the dates of these changes are indicated.