Telephone numbers in Mobius

Telephone numbers in Mobius are administered by the National Communications Institute of Mobius and are almost similar to telephone numbers in the North American Numbering Plan.

The NCI divides the territories of its members into numbering plan areas (NPAs) which are encoded numerically with a three-digit telephone number prefix, commonly called the area code. Each telephone is assigned a seven-digit telephone number unique only within its respective plan area. The telephone number consists of a three-digit central office code and a four-digit station number. The combination of an area code and the telephone number serves as a destination routing address in the public switched telephone network (PSTN). For international call routing, the NCI has been assigned the international calling code 422 by the International Telecommunications Union (ITU). The NCI conforms with ITU Recommendation E.164, which establishes an international numbering framework.

History
Since at least the 1940s, the use of telephones became widespread all across Mobius. As a direct consequence of the economic union that covers all of the archipelago, the Telephony Institute of Mobius (now the NCI) was established to standardize phone numbers. It was until the 1970s when the numbering plan became what it is today with the country code of 422. In fact, there were some areas that still used old crank phones well into the early 1990s. In this case, one would have to turn the crank four times in order to get the operator in order to complete the call. As the system was inspired by the NANP, and the European numbering systems, Mobian phone numbers ended up becoming a combination of these two systems with the numbering structure resembling the American system, but with some unique aspects that are common with the systems of other European nations that the American system doesn't have.

Numbering plan
The numbering plan is almost the same as the NANP except for the country code which is +422 instead of +1, the usage of a prefix number code, and the usage of a trunk prefix.

The NCI number format may be summarized in the notation 0X-NPA-COE-xxxx:

For example, 01-404-235-5678 is a valid telephone number with area code 404, central office prefix 235, and line number 5678. The number 404-009-5678 is invalid, because the central office code must not be in the form 00N. 01-404-159-2653 is invalid, because the office code must not begin with 1. 01-123-234-5678 is invalid, because the NPA must not begin with 0 or 1.

The country calling code for Mobius is 422. In international format, a Mobian number should be listed as +422 1  404  555  0100, where 404 is an area code (Angel Island), the trunk prefix is omitted, and 1 denotes a landline number.

Each three-digit area code has a capacity of 9,999,848 telephone numbers:
 * COE may begin with the digits [0–9], providing a base of 10 million numbers: (10 × 100 × 10000).
 * However, the first two digits of COE cannot both be 0, to avoid confusion with the 00N codes (subtract 10).
 * Despite the widespread usage of COE 555 for fictional telephone numbers—see 555 (telephone number)—today, the only such numbers now specifically reserved for fictional use are 555-0100 through 555-0199, with the remaining 555 numbers released for actual assignment as information numbers (subtract 100).
 * In individual geographic area codes, several other COE prefixes are generally not assigned: the home area code(s), adjacent domestic area codes and overlays, area codes reserved for future relief nearby, industry testing codes (generally COE 958 and 959) and special service codes (such as COE 950 and 976).

Area Codes
Here are the area codes within Mobius:
 * 248 - Albion
 * 271 - Alba
 * 295 - Voxia
 * 262 - Valio
 * 314 - Frankonia
 * 305 - Saint Jean
 * 342 - Wilhelmsland
 * 327 - James-Welxin
 * 383 - Weshon
 * 361 - Tacomia
 * 359 - Merkins
 * 338 - Panzero
 * 374 - Les Moniques
 * 404 - Angel Island
 * 451 - Manilia
 * 475 - Hautensland
 * 506 - Walford
 * 537 - Patoburg
 * 652 - Jesston District

Prefixes
The "0" is the trunk prefix. If an international call were to be made, the zero would be omitted.


 * 00 - Reserved for special numbers and codes
 * 01 - Landline
 * 02 - Mobile phone services
 * 03 - Mobile phone services
 * 04 - Reserved for future use
 * 05 - Reserved for future use
 * 06 - Reserved for future use
 * 07 - Special services
 * 08 - Special services
 * 09 - Premium services

Special numbers and codes
Some special numbers in the Mobian system:
 * 000 - Operator assistance
 * 0000 - Long-distance operator assistance
 * 00 - International access code using direct dial (for all destinations outside Mobius)
 * 001 - International access code using operator assistance (for all destinations outside Mobius)
 * 002 - Local community information or social services
 * 003 - City government or non-emergency police matters
 * 004 - Local telephone directory service
 * 005 - Traffic, road, and tourist information
 * 006 - Telephone line repair service, wireless operator customer service
 * 007 - Relay service for customers with hearing or speech disabilities
 * 008 - Non-urgent telehealth/teletriage services
 * 009 - Emergency telephone number - fire department, medical emergency, police
 * 0051 - A history of unanswered calls on a telephone number, useful for those who are not Caller ID subscribers.
 * 0057 - Used to trace harassing, threatening, abusive, obscene, etc. phone calls, and keep results of trace at phone company.
 * 0066 - To keep retrying a busy-line (see also Called-party camp-on)
 * 0067 - Caller ID Block
 * 0069 - Call Return caller may press '1' to return call after hearing number
 * 0070 - Cancel call waiting on a call-by-call basis
 * 0071 - Three-way calling, which lets a person talk to people in two different locations at the same time.
 * 0074 - Speed dial, which allows someone to quickly dial any of eight frequently called numbers using a one-digit code, from any phone on their line.
 * 0075 - Allows a total of 30 speed-call numbers with two digits.
 * 0077 - Activates Anonymous Call Rejection Service
 * 0082 - Releases Caller ID block on a call-by-call basis
 * 0087 - Deactivates Anonymous Call Rejection Service

Dialing procedure
The amount of numbers to be dialed depends on whether the caller is placing a local call, a short-distance call, or a long-distance call.

For example, suppose someone wants to call the office of the Seigneur of Angel Island:
 * If they are calling within Angel Island, they would dial 01 591  4129
 * If they are calling outside Angel Island but within Mobius, they would dial 01 404  591  4129
 * In some areas within Mobius, they would dial 422 01  404  591  4129. This practice was discouraged by the NCI for years.
 * If they are calling outside Mobius, they would dial the international prefix of the originating country and then they would dial +422 1  404  591  4129. (In the NANP, they would dial 011  422  1  404  591  4129)