AT&T Indiana
Holding: AT&T Inc
2001-04-10
2013-10-21
About AT&T Indiana
AT&T Indiana is the Indiana-specific operating entity of AT&T Inc., functioning as a Regional Bell Operating Company (RBOC) providing wireline and wireless telecommunications services in the state. It primarily serves consumers and businesses with fixed-line telephony, broadband internet, and mobile services, while also supporting wholesale interconnects. In the US telecom landscape, it is part of the dominant AT&T network, which holds substantial market share in wireless (second to Verizon) and wireline services, with strong coverage in Indiana including 94% 4G LTE and 74% 5G.
- Parent: AT&T Inc.
- Services: wireless retail, broadband internet, wireline telephony, business IP services
Sources: AT&T - Association of Indiana Counties · Best Cell Phone Coverage in Indiana - Navi · AT&T INDIANA GUIDEBOOK PART 14 - Type 1 · AT&T in Indiana - Home & Business Services
Toll-free side: Related toll-free RespOrg: AT&T (code BSSB1). View on resporgs.com →
Headquarters: Hoffman Estates, IL
Carrier website
att.com: opens in a new tab
Block portfolio at a glance
By age
- Recent (0). Last 18 mo
- Medium (0)
- Old (72)
- Undated (2,869)
Footprint by state
Stronger blue = more blocks issued in that state. ● marks states with activity in the last 18 months.
- Indiana IN · 2,941
Top area codes
Bars show total blocks; red overlay is recent.
Block assignments by year
Member OCNs
1 OCN roll up under AT&T Indiana.
| OCN | Company name on file | HQ | Type | Total | Recent |
|---|---|---|---|---|---|
| 9325 | Ameritech Indiana | Hoffman Estates, IL | Regional Bell Operating Company | 2,941 | · |