Many of these prefixes included few, if any, subscribers. For decades, new area codes were created through a "split" of an existing area code into multiple regions. Normally, the more populated region would continue to use the existing area code. The less populated areas would have all existing phone numbers reassigned to use a new area code to free up more numbers in the original area code. This process forced many into a new phone number which would require updates to letterhead, business cards, phone directories, personal contact lists, etc.
Many people would dial the incorrect area code which caused confusion. In , area code was created as the first "overlay" area code. With an overlay area code, the overlay serves the same geographic as the original to increase the pool of numbers available in the area.
When the original phone systems were put in place, 7-digit dialing without the area code could be used to make local calls, and digit dialing with the area code only needed to be used for long distance calls. In , area code was introduced as the first overlay with forced 10 digit dialing for local calls. Initially, there was substantial public resistance to overlays because of the digit dialing requirement for local calls.
However, the last area code split in Canada was in with the split of splitting off and the last area code split in the US was in with splitting off No area code splits are currently proposed and both countries have agreed: without exceptional circumstances, all new area codes will be overlays. Today, 7-digit dialing is broken in most major cities. Many areas not served by an overlay can still use 7-digit dialing.
Something besides allocating more area codes needed to be done to improve the system. After a few trials, mandatory number pooling was implemented in with a national rollout to the largest metropolitan areas. With number pooling, an entire prefix of 10, numbers is allocated to a specific area, but phone numbers are only allocated to a specific carrier in 1, block increments. While several US markets are still not required to implement number pooling and Canada has no number pooling, the effects dramatically slowed the need to allocate new prefixes and new area codes because of increased utilization.
The rate of issuing new area codes dropped to nearly half that of the s. While it may seem that all consumers in the US use a mobile phone, more than two-thirds of prefixes are allocated for landline use. That number has been dropping by about 3. South Africa. The following table lists the ISO-defined political code values supported by UPS at the time this document was published. Country Code. Political Division 1 Code.
The following table lists the UPS-defined country code values supported by UPS at the time this document was published. Currency Code:. France, Metropolitan. France, Metro. Palestinian Territory, Occupied. United States Minor Outlying Is. Barthelemy St. Eustatius St.
Maarten St. Martin French St. Croix St. Maarten SX St. Full Name:. Abbreviated Name:. British Columbia. New Brunswick. Newfoundland and Labrador. Nova Scotia. Northwest Territories. Prince Edward Island. Yukon Territory.
Canary Islands. Northern Ireland. Channel Islands. District of Columbia. North Carolina. North Dakota. New Hampshire. New Jersey. New Mexico. New York. Rhode Island. South Carolina. South Dakota. West Virginia. Full Name. Abbreviated Name. Our research shows that subscribers using Codify are more productive. Subscribe to Codify and get the code details in a flash. Radiology Procedures. Pathology and Laboratory Procedures. Medicine Services and Procedures.
Evaluation and Management Services. Category II Codes. Multianalyte Assay. Category III Codes. Proprietary Laboratory Analyses. With more than 10, unique classifications, SIC codes have been extended to create the most accurate way to target businesses. Businesses often use the SIC code lookup to identify companies within specific industries for marketing purposes. By determining the SIC code of their best clients, they can use this information to successfully acquire more customers within that industry.
For SIC code lookup by company name and to find a company's SIC Code you can use our search function on top of every page and search for a business. Alternatively a search for that company's main competitors may help, if the company itself is not listed.
An establishment may only have one 1 Primary SIC code, which is determined by the industry classification that generates the highest revenue or value of shipments.
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