Prefix 301-578
Area Code 301 Details
County: MONTGOMERY
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 578 | 5 | MONTGOMERY | 38.99990000 | -77.02930000 | L | 1996-10-15 00:00:00 | 20901 | 24031 | 236 | VERIZON MARYLAND, INC. | WSHNGTNZN3 | 9212 | SILVER SPRING |
Phone Numbers
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