Local Calling Guide
Area code/prefix search
Switch: WASHDCSWX2Z
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- Switch type: POI
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NPA-NXX | BLOCK | Rate Centre | Region | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|
202-378 | A | Washington Zone 1 | DC | 7421 AT&T LOCAL | 236 | |||
301-820 | A | Gaithersburg | MD | 7421 AT&T LOCAL | 236 | |||
301-821 | A | Laurel | MD | 7421 AT&T LOCAL | 236 | |||
301-822 | A | Washington Zone 11 | MD | 7421 AT&T LOCAL | 236 | |||
301-823 | A | Washington Zone 13 | MD | 7421 AT&T LOCAL | 236 | |||
301-825 | A | Washington Zone 10 | MD | 7421 AT&T LOCAL | 236 | |||
301-828 | A | Washington Zone 2 | MD | 7421 AT&T LOCAL | 236 | |||
301-830 | A | Washington Zone 3 | MD | 7421 AT&T LOCAL | 236 | |||
301-832 | A | Washington Zone 4 | MD | 7421 AT&T LOCAL | 236 |
Last updated: Sun, 04 Apr 2021 19:28:27 UTC
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