Whois & Analysis for zipinfo.com

ZIP Codes are a system of postal codes used by the United States Postal Service (USPS) since 1963.

The term ZIP, an acronym for Zone Improvement Plan, was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address.

The basic format consists of five numerical digits.

An extended ZIP+4 code, introduced in 1983, includes the five digits of the ZIP Code, a hyphen, and four additional digits that determine a more specific location within a given ZIP Code.

A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints.

Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing.

Telephone numbering plans are defined in each of administrative regions of the public switched telephone network (PSTN) and they are also present in private telephone networks.

Federal Information Processing Standards (FIPS) are publicly announced standards developed by the United States federal government for use in computer systems by non-military government agencies and government contractors.

A time zone is a region of the globe that observes a uniform standard time for legal, commercial, and social purposes.

Time zones tend to follow the boundaries of countries and their subdivisions because it is convenient for areas in close commercial or other communication to keep the same time.

In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the area.

Such regions are neither legally incorporated as a city or town would be, nor are they legal administrative divisions like counties or separate entities such as states.

As such, the precise definition of any given metropolitan area can vary with the source.

A typical metropolitan area is centered on a single large city that wields substantial influence over the region (e.g., Chicago or Atlanta).

However, some metropolitan areas contain more than one large city with no single municipality holding a substantially dominant position (e.g., Dallas–Fort Worth metroplex, Norfolk-Virginia Beach (Hampton Roads), Riverside–San Bernardino (Inland Empire) or Minneapolis–Saint Paul).