Editing Nominal number (section)

==Examples==
A great variety of numbers meet the broad definition, including:
* [[National identification number]]s, such as:
** [[Social Security number]]s
** [[Driver's license]] numbers
** [[National Insurance number]]
* [[Routing]] numbers, such as:
** [[Bank code]]s and [[sort code]]s, such as [[International Bank Account Number]]s or [[ABA routing transit number]]s.
** [[Postal code]]s, such as [[ZIP code]]s (These are generally numeric in the United States, but other nations often use alphanumeric systems.)
** [[Telephone number]]s, assigned by various [[telephone numbering plan]]s, such as the [[ITU-T]] [[E.164]] and the [[North American Numbering Plan]] (NANPA).
** Numbers of train or bus routes or the individual vehicles in public transport
* [[Car model]] names from some car manufacturers, such as [[BMW]] or [[Peugeot]], are plain numbers.

These are usually assigned either in some hierarchical way, such as how telephone numbers are assigned (in NANPA) as [[Country Code]] + [[Area Code]] + Prefix + Suffix, where the first three are geographically based, or sequentially, as in [[serial number]]s; these latter are thus properly ''ordinal'' numbers.

===Narrowly defined===
Numerical identifiers that are nominal numbers narrowly defined, viz, convey no information other than identity, are quite rare. These must be defined either arbitrarily or randomly, and most commonly arise in computer applications, such as dynamic [[IP address]]es assigned by [[Dynamic Host Configuration Protocol]]. A more everyday example are sports [[squad number]]s, which do not in general have any public meaning beyond identity, though they may be allocated based on some internal club or organization policy. In some settings, these are based on position, but in others they are associated with an individual, being a proper nominal number. The naming function is demonstrated by [[Squad number#Retired numbers|"retired numbers"]], where a club no longer issues a number that has become associated with a particularly famous player, but reallocate others to new players when they become available.