Ameritech Indiana COLD
d/b/a AT&T Indiana
Holding: AT&T Inc
2000 W Att Center Dr, Room 4G33A
Hoffman Estates, IL 60192-5005
AT&T Indiana
2001-04-10
2013-10-21
Several years old. Contact the number directly.
Ameritech Indiana issued these blocks several years ago. Customers swap carriers every few years, so Ameritech Indiana probably no longer holds them. Try calling any number you're interested in. If a person answers, you've found the current owner and can negotiate with them.
A long shot: if you'd like a watch in case we ever gain access to Ameritech Indiana's inventory directly, you can register your interest. We don't currently have visibility into number changes within carriers, so don't count on it.
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 →
Carrier website
att.com: opens in a new tab
HQ: Hoffman Estates, IL


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
Sister OCNs under AT&T Inc
| OCN | Company | Total | Recent |
|---|---|---|---|
| 6534 | New Cingular Wireless PCS LLC - IL | 58,704 | 6,826 |
| 6214 | New Cingular Wireless PCS LLC - GA | 40,046 | 5,473 |
| 6010 | New Cingular Wireless PCS LLC | 38,106 | 3,019 |
| 4036 | New Cingular Wireless PCS LLC - DC | 30,944 | 4,342 |
| 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 |
| 9329 | Ameritech Illinois | 6,645 | 0 |
| 516C | AT&T Enterprises LLC | 5,935 | 113 |
| 9323 | Ameritech Michigan | 5,035 | 0 |
| 9321 | Ameritech Ohio | 4,377 | 0 |
