Public regulatory phone
(312) 983-8888
Associations below come from public FCC regulatory records. Confidence describes the source relationship, not current ownership of the number.
| Company or contact | FRN | System | Source record | Confidence | Observed |
|---|---|---|---|---|---|
| NICOR GAS / AGL RESOURCES L | 0002855773 | ULS | 02459af164f4b74cf774aaadba73bf5016ad18d93f5ce59311730947e432de9c | Authoritative identifier (100.0%) | 2026-08-04 13:48:29 |