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Carrier group · Regional Bell Operating Company

AT&T Wisconsin

Holding: AT&T Inc

Total blocks
2,021
Recent (18 mo)
0
Medium
0
Old
159
Member OCNs
1
States
1
Area codes
5
First assigned block
2001-02-06
Last assigned block
2016-01-13
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Block portfolio at a glance

By age

Old: 159Undated: 1,8622,021blocks
  • Recent (0) — last 18 mo
  • Medium (0)
  • Old (159)
  • Undated (1,862)

Footprint by state

Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.

HawaiiAlaskaFloridaSouth CarolinaGeorgiaAlabamaNorth CarolinaTennesseeRhode IslandConnecticutMassachusettsMaineNew HampshireVermontNew YorkNew JerseyPennsylvaniaDelawareMarylandWest VirginiaKentuckyOhioMichiganWyomingMontanaIdahoWashingtonTexasCaliforniaArizonaNevadaUtahColoradoNew MexicoOregonNorth DakotaSouth DakotaNebraskaIowaMississippiIndianaIllinoisMinnesotaWisconsin (WI): 2,021 blocksMissouriArkansasOklahomaKansasLouisianaVirginiaDistrict of Columbia

Top area codes

Bars show total blocks; red overlay is recent.

414641262483920477608282715138

Block assignments by year

01
02
03
04
05
06
07
32 08
09
10
11
12
13
15
16

Member OCNs

1 OCN roll up under AT&T Wisconsin.

OCNCompany name on fileHQTypeTotalRecent
9327 Ameritech Wisconsin Hoffman Estates, IL Regional Bell Operating Company 2,021 —