Telephone numbers in Rumahoki

Telephone numbers in Rumahoki are administered by the National Communications Institute of Rumahoki.

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 (PSTN). For international call routing, the NCI has been assigned the international calling code 422.

History
Since at least the 1920s, the use of telephones have became widespread all across what would eventually become Rumahoki. Of course, back then each of the Delepasian nations have had their own numbering plans with some even exclusively using letters of the alphabet in lieu of numbers. This led to the Great operators' strike of 1931 when operators went on strike due to them being exhausted from having to convert letters into the appropriate numbers. A direct consequence of this blackout was the establishment of the Delepasian Telephony Institute (now the NCI) in 1935 with the goal of regulating telephone numbers throughout the region to ensure easier communication and drastically reduce the burdens that operators had when converting these so-called "phone letters" into phone numbers. This meant that phones that exclusively dialed alphabetical letters were to be replaced by conventional numerical phones (although letterings were permitted via phonewords, this just meant that only numbers were to be dialed regardless). However, the numbering system wouldn't be completely standardised into how it's structured today until the formation of the Delepasian Commonwealth in 1976.

Numbering plan
The NCI numbering format may be summarised in the notation 0X-NPA-COE-xxxx

For example, 01-404-235-5678 is a valid telephone number with area code 404 (Valió), central office prefix 235, and line number 5678. The number 01-404-009-5678 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 Rumahoki is 422. In international format, a Rumahokian number should be listed as +422 1  404  555  0100, where 404 is an area code, the trunk prefix is omitted, and 1 denotes a landline number.

Each three-digit area code has a capacity of 9,839,887 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 s (subtract 100000).
 * Despite the widespread usage of COE 555 for fictional telephone numbers—see —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).
 * The subscriber number may not be any of the four-digit special codes, to avoid confusion with them (subtract 13).
 * 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 - Rosaría
 * 271 - Bahía
 * 295 - Hombería
 * 262 - Río Solo
 * 314 - Lagocía
 * 305 - Terregran
 * 342 - Auxaña
 * 327 - Ríos Gemelos
 * 383 - Portas Gêmeas
 * 361 - Inaua
 * 359 - Ibimini
 * 338 - Kauabimini
 * 374 - Junu'úrinia Ba'andasi-Navidadía
 * 404 - Valió
 * 451 - Nueva Isuría
 * 475 - Trêscolinia
 * 506 - Kalanatoa
 * 537 - Na'aturie
 * 652 - Santa Maria 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 Rumahokian system:
 * 000 -
 * 0000 - assistance
 * 00 - International access code using direct dial (for all destinations outside Rumahoki)
 * 001 - International access code using operator assistance (for all destinations outside Rumahoki)
 * 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, customer service
 * 007 - Relay service for customers with hearing or speech disabilities
 * 008 - Non-urgent /teletriage services
 * 009 - - fire department, medical emergency, police
 * 0051 - A history of unanswered calls on a telephone number, useful for those who are not subscribers.
 * 0057 - Used to harassing, threatening, abusive, obscene, etc. phone calls, and keep results of trace at phone company.
 * 0066 - To keep retrying a busy-line (see also )
 * 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