Numbering scheme

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There are many different numbering schemes for assigning nominal numbers to entities. These generally require an agreed set of rules, or a central coordinator. The schemes can be considered to be examples of a primary key of a database management system table, whose table definitions require a database design.

The simplest numbering scheme is simply to assign cardinal numbers to entities. In some cases (such as computing, time-telling, and in some countries the numbering of floors in buildings) zero-based numbering is used, where the first entity is assigned "zero" instead of "one".

Other numbering schemes are listed by field below.

Chemistry

• CAS registry numbers for chemical compounds
• EC numbers for identifying enzymes
• UN numbers for (classes of) hazardous substances
• E numbers for food additives

Communications

• The E.164 numbering plan for telephone numbers, including:
  • Country calling codes
  • North American Numbering Plan
  • Numbering plans by country
    • Argentina: Argentine telephone numbering plan
    • Australia: Australian telephone numbering plan
    • China: China telephone numbering plan
    • France: French telephone numbering plan
    • Hong Kong: Hong Kong telephone numbering plan
    • Japan: Japanese telephone numbering plan
    • Singapore: Singapore telephone numbering plan
    • United Kingdom: UK telephone numbering plan
• The IP address allocation scheme (IANA)
• The DNIC prefixes of X.25 NUAs assigned by the ITU http://www.itu.int

Products

• The GS1 numbering scheme, including
  • GTIN for products, which includes the UPC and EAN-13 barcodes
  • ISBN codes for books
  • ISSN codes for periodicals
• Vehicle identification number

People

• National identification numbers
  • Personal identification number (Denmark)
  • Social Security number (United States)
  • Social Insurance Number (Canada)
  • INSEE number (France)
  • National Insurance number (United Kingdom)
• Personal Public Service Number (Republic of Ireland)
• Tax file number (Australia)
• Unique Master Citizen Number (former Yugoslavia)
• Det Centrale Personregister (Denmark)

Topics

• Dewey Decimal Classification and Universal Decimal Classification for books
• West American Digest System legal topic numbering scheme

Geography and transport

• Postal codes
  • ZIP codes
• Global Location Numbers by GS1
• FIPS place codes
• House numbering schemes
• Floor numbering
• Room number
• Line number

See also: Country code; Address (geography).

Vehicles

• Vehicle registration plates
• British Carriage and Wagon Numbering and Classification
• British Rail locomotive and multiple unit numbering and classification
• UIC classification of goods wagons

Roads

Road numbering schemes

• Arlington County, Virginia, street-naming system
• China road numbering
• Great Britain road numbering scheme
• European route by UNECE
• Interstate highway
• Edmonton, Alberta#Street layout
• Montreal
• Highways in Australia#Route numbering systems

Others/general

• API well numbers for numbering oil and gas wells in the United States
• Bank card number
• International Bank Account Number
• International Statistical Classification of Diseases and Related Health Problems for diseases
• The MAC address allocation scheme for hardware addresses of certain networking products
• National Pokédex
• The NSAP allocation scheme
• Post office box
• Production code number
• Stamp numbering system
• Regnal numbers
  • Princes of Reuss
  • Popes' ordinals
• Wikipedia markup syntax for numbered lists

See also

• naming scheme