Prefix 312-340
Area Code 312 Details
County: COOK
| Code | Other Cities | Timezone | County | Latitude | Longitude | Daylight Saving Time | Connection Type | NXX Created At | Zip Code | Fips | Lata | Carrier | Overlay | Rate Center | Ocn | Coverage Area | Active |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 340 | 6 | COOK | 41.88390000 | -87.63690000 | W | 2011-09-21 00:00:00 | 60606 | 17031 | 358 | T-MOBILE USA, INC. | CHICGOZN01 | 6529 | CHICAGO |
Phone Numbers
| Phone Number | Score | Updated At |
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