NewLocalNumbers.com
OCN 9329 · Regional Bell Operating Company

Ameritech Illinois

d/b/a AT&T Illinois

Holding: AT&T Inc

Total blocks
6,645
Recent (18 mo)
0
Medium
0
Old
1,040
Area codes
14
States
2
Address
2000 W Att Center Dr, Room 4G33A
Hoffman Estates, IL 60192-5005
Website
AT&T Illinois
First assigned block
1998-07-14
Last assigned block
2017-02-17
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HQ — Hoffman Estates, IL

Street view of Ameritech Illinois HQ
Street view
Satellite view of Ameritech Illinois HQ
Satellite

Block portfolio at a glance

By age

Old: 1,040Undated: 5,6056,645blocks
  • Recent (0) — last 18 mo
  • Medium (0)
  • Old (1,040)
  • Undated (5,605)

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 DakotaNebraskaIowaMississippiIndianaIllinois (IL): 6,642 blocksMinnesotaWisconsin (WI): 3 blocksMissouriArkansasOklahomaKansasLouisianaVirginiaDistrict of Columbia

Top area codes

Bars show total blocks; red overlay is recent.

8471,3743121,1446308127737928155407085336184432174223093302241868723333129

Block assignments by year

98
116 99
116 00
89 01
118 02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17

Area codes

NPABlocksRecentLast
847 1,374 — 2011-02-10
312 1,144 — 2012-10-19
630 812 — 2015-01-20
773 792 — 2009-07-01
815 540 — 2011-03-24
708 533 — 2013-09-25
618 443 — 2010-03-15
217 422 — 2017-02-17
309 330 — 2013-11-20
224 186 — 2016-01-26
872 33 — 2016-04-11
331 29 — 2012-10-26
779 4 — 2006-11-17
262 3 — —

States

StateBlocksRecent
IL 6,642 —
WI 3 —

Sister OCNs under AT&T Inc

OCNCompanyTotalRecent
6534 New Cingular Wireless PCS LLC - IL 58,704 6,972
6214 New Cingular Wireless PCS LLC - GA 40,046 5,569
6010 New Cingular Wireless PCS LLC 38,106 3,116
4036 New Cingular Wireless PCS LLC - DC 30,944 4,493
9533 Southwestern Bell Telephone Company 26,095 0
9740 Pacific Bell Telephone Company 18,541 0
9417 Bellsouth Telecommunications Inc dba Southern Bell Telephone & Telegraph 15,734 0
9419 Bellsouth Telecommunications Inc dba South Central Bell Telephone 13,075 0
516C AT&T Enterprises LLC 5,935 113
9323 Ameritech Michigan 5,035 0
9321 Ameritech Ohio 4,377 0
9325 Ameritech Indiana 2,941 0