Costa Rica +506
Number Format
Area Code: none
Subscriber Number: 8 digits
Trunk Prefix: n/a
International Prefix: 00
Numbering range information
20 March 2008 - expansion to 8-digit national numbering
In 2009, national numbering expands to 8-digit format, where digit '2' was prepended to existing fixed/wireline numbers, while digit '8' was prepended to mobile numbers (not '3' as previously reported here). Permissive use of 7-digit numbers was in effect until 20 September 2008 after which the 8-digit numbers became mandatory.
Sources:
ICE announcement (28 August 2007, via ITU)
news report (20 March 2008, Nacion)
(Input courtesy Mauricio Barrantes, Jeffrey Van Fleet, Ron Fleming, Daniel Ortega; original news courtesy Sergiu Rosenzweig)
Source: Instituto Costarricense de Electricidad (ICE) announcement (22 November 2006, via ITU)
30 March 1994 - 7-digit national numbers
Costa Rica expanded its telephone numbers from a 6-digit to a 7-digit format on 30 March 1994. In most cases, a digit was prepended to existing numbers. About 15% of the numbers involved changes to the first 2 or 3 digits of the old numbers.
Source: Instituto Costarricense de Electricidad announcement (via ITU).
Other information
Regulator is Autoridad Reguladora de los Servicios Públicos (ARESEP).
A major carrier is ICE.
(tip courtesy Ray Chow)