Numbering scheme
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There are many different numbering schemes for assigning 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.
Numbering schemes include:
- The E.164 numbering plan for telephone numbers, including:
- The IP address allocation scheme (IANA)
- The DNIC prefixes of X.25 NUAs assigned by the ITU http://www.itu.int
- The NSAP allocation scheme
- The MAC address allocation scheme for hardware addresses of certain networking products
- The UPC numbering scheme for barcodes on products
- The European Article Numbering-Uniform Code Council (EAN-UCC) numbering scheme, including
- Dewey Decimal Classification and Universal Decimal Classification for books
- Social Security numbers
- Social Security number#United States
- Canadian Social Insurance Numbers
- French INSEE numbers
- British National Insurance Numbers
- Production code number
- Vehicle identification number
- Stamp numbering system
- Credit card number prefixes
- FIPS place codes
- Postal codes
- CAS registry numbers for chemical compounds
- EC numbers for identifying enzymes
- UN numbers for (classes of) hazardous substances
- E numbers for food additives
- ICD for diseases
- West American Digest System legal topic numbering scheme
- Road numbering schemes
- Use of ordinals by monarchs
- House numbering schemes
- line number
See also: country code, naming schemes.