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.
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Numbering schemes include:
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
- Telephone 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
Locations
- Postal codes
- Global Location Numbers by GS1
- Road numbering schemes
- FIPS place codes
- House numbering schemes
- Floor numbering
- line number
See also: country code, address (geography).
Products
- The GS1 numbering scheme, including
- Vehicle identification number
Topics
- Dewey Decimal Classification and Universal Decimal Classification for books
- West American Digest System legal topic numbering scheme
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)
- Permanent account number(India)
- Unique Master Citizen Number (former Yugoslavia)
- Det Centrale Personregister (Denmark)
See also: Category:National identification numbers
Others/general
- Production code number
- Vehicle registration plates
- Stamp numbering system
- Post office box#Numbering of boxes
- Credit card number
- International Statistical Classification of Diseases and Related Health Problems for diseases
- The NSAP allocation scheme
- The MAC address allocation scheme for hardware addresses of certain networking products
- Use of ordinals by monarchs
- National Pokédex
- British Carriage and Wagon Numbering and Classification
- British Locomotive and Multiple Unit Numbering and Classification
