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Area Code and Exchange (608) 813 in Wisconsin

Exchange Code 813 for Area Code 608 covers the city of Black Earth, Dane County in the State of Wisconsin. It is centered at N 43º 8' 13.97", W 89º 44' 48.44". This Exchange Code was introduced on 15 January 2010 and is designated as being used for Landline telephones.

This Exchange covers telephone numbers ranging from (608) 813-0000 to (608) 813-9999.

Technical Information for Exchange (608) 813

NPA/Area Code: 608
NXX/Exchange Code: 813
City: Black Earth
County: Dane
State: Wisconsin
OCN: 3839
Time Zone: CST
DST Observed:
Exchange Status: Active
NXX Use Type: Landline
NXX Intro Date: 15 January 2010
Latitude: 43.1372152
Longitude: -89.7467896
New NPA:
LATA: 354
FIPS: 55025
CBSA Code: 31540
Number Pooling: Yes
CBSA Name: Madison, WI


Number Pooling in Exchange (608) 813

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 608-813 and the following thousand blocks are currently assigned to carriers.