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Area Code and Exchange (262) 399 in Wisconsin

Exchange Code 399 for Area Code 262 is located in the State of Wisconsin. This Exchange Code was introduced on 13 October 1999.

This Exchange covers telephone numbers ranging from (262) 399-0000 to (262) 399-9999.

Technical Information for Exchange (262) 399

NPA/Area Code: 262
NXX/Exchange Code: 399
State: Wisconsin
Rate Center: WAUKESHA
OCN: 073H
Time Zone: CST
DST Observed:
Exchange Status: Active
NXX Use Type: Unknown
NXX Intro Date: 13 October 1999
New NPA:
CBSA Code:
Number Pooling: Yes


Number Pooling in Exchange (262) 399

The initial set up of an Exchange was to have all 10,000 numbers (0000 - 9999) for a particular Rate Center allocated to the same local exhange carrier. With the advent of multiple carriers, allocating each one of them their own Exchange Code would be inefficient and soon use up the available number pools for a particular area. To counter this, some exchanges are split into blocks of 1,000 numbers, which can each be allocated to individual carriers. This cuts down on wasted numbers that aren't allocated as each carrier has a smaller pool available.

Number Pooling is activated in Exchange 262-399 and the following thousand blocks are currently assigned to carriers.