Area code 600 is a telephone
area code
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, rea ...
in the
North American Numbering Plan for non-geographic use in
Canada of specialized
telecommunication services such as
telex applications,
caller-pays cellular,
ISDN, and
mobile satellite communication services.
One of the area code's most common uses is the provision of
satellite phone
A satellite telephone, satellite phone or satphone is a type of mobile phone that connects to other phones or the telephone network by radio through orbiting satellites instead of terrestrial cell sites, as cellphones do. The advantage of a sa ...
service in remote areas of
Northern Canada
Northern Canada, colloquially the North or the Territories, is the vast northernmost region of Canada variously defined by geography and politics. Politically, the term refers to the three Provinces_and_territories_of_Canada#Territories, territor ...
where conventional telecommunications infrastructure is not available.
Central office prefixes for area code 600 are assigned according to a special set of guidelines issued by the
Canadian Radio-television and Telecommunications Commission
The Canadian Radio-television and Telecommunications Commission (CRTC; french: Conseil de la radiodiffusion et des télécommunications canadiennes, links=) is a public organization in Canada with mandate as a regulatory agency for broadcasti ...
. The guidelines do not define the services that qualify for the non-geographic numbers, but specify that:
The teletypewriter services provided with the area code were previously provisioned with
area code 610 in the
Teletypewriter Exchange Service (''TWX'') in 1962. The services were reassigned to area code 600 in 1992, returning 610 to the pool of unassigned area codes for general purposes. It was reassigned in 1994 to Pennsylvania.
Area code 600 has a capacity of 798 central office prefixes (200 to 999, with
555
Year 555 (DLV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. The denomination 555 for this year has been used since the early medieval period, when the Anno Domini calendar era became the pr ...
and
911 not issued). Six relief area codes (622, 633, 644, 655, 677 and 688) are reserved by NANPA as subject to assignment in Canada for expansion of non-geographic services
Canadian Numbering Plan and Dialling Plan
Version 5.0, The Canadian Steering Committee on Numbering (CSCN), October 26, 2011, page 13 but have never been used. Area code 666 is not assigned. Each block of 10,000 numbers is assigned to one carrier only; number portability or number pooling is not practiced. A carrier offering multiple, different non-geographic services may request separate prefixes for each.
See also
* Telephone numbers in Canada
References
{{reflist
External links
Non-geographic Telephone Codes for North America
CSCN Assignment Guidelines: Service Area Code (SAC) 600 NXX Code Assignment (April 13, 1994)
Archived fro
original
on August 28, 2006 via Wayback Machine. Retrieved September 7, 2019.
600