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Region Carrier Name:Maryland
This is the United States Region Carrier Name:Maryland Area Code Database page list. You can click the title to browse the detail information.
| City | National Destination Code | Sn from | Sn to | Number Type |
|---|---|---|---|---|
| Kensington | 240 | 2210000 | 2210999 | G |
| Kensington | 240 | 2212000 | 2212999 | G |
| Kensington | 240 | 2214000 | 2214999 | G |
| Kensington | 240 | 2215000 | 2215999 | X |
| Kensington | 240 | 2216000 | 2216999 | X |
| Kensington | 240 | 2217000 | 2217999 | X |
| Kensington | 240 | 2219000 | 2219999 | X |
| Berwyn | 240 | 2280000 | 2280999 | G |
| Berwyn | 240 | 2281000 | 2281999 | G |
| Berwyn | 240 | 2282000 | 2282999 | G |
| Berwyn | 240 | 2283000 | 2283999 | G |
| Berwyn | 240 | 2284000 | 2284999 | G |
| Berwyn | 240 | 2285000 | 2285999 | G |
| Berwyn | 240 | 2286000 | 2286999 | G |
| Berwyn | 240 | 2287000 | 2287999 | G |
| Berwyn | 240 | 2288000 | 2288999 | G |
| Berwyn | 240 | 2289000 | 2289999 | G |
| Frederick | 240 | 2360000 | 2360999 | G |
| Frederick | 240 | 2361000 | 2361999 | G |
| Frederick | 240 | 2362000 | 2362999 | G |
| Frederick | 240 | 2363000 | 2363999 | G |
| Frederick | 240 | 2364000 | 2364999 | G |
| Frederick | 240 | 2365000 | 2365999 | G |
| Frederick | 240 | 2366000 | 2366999 | G |
| Frederick | 240 | 2367000 | 2367999 | G |
| Frederick | 240 | 2368000 | 2368999 | G |
| Laurel 236 | 240 | 2641000 | 2641999 | G |
| Laurel 236 | 240 | 2643000 | 2643999 | G |
| Laurel 236 | 240 | 2648000 | 2648999 | G |
| Rockville | 240 | 2760000 | 2760999 | G |
| Rockville | 240 | 2761000 | 2761999 | G |
| Rockville | 240 | 2762000 | 2762999 | G |
| Rockville | 240 | 2763000 | 2763999 | G |
| Rockville | 240 | 2764000 | 2764999 | G |
| Rockville | 240 | 2765000 | 2765999 | G |
| Rockville | 240 | 2766000 | 2766999 | G |
| Rockville | 240 | 2767000 | 2767999 | G |
| Rockville | 240 | 2768000 | 2768999 | G |
| Rockville | 240 | 2769000 | 2769999 | G |
| Kensington | 240 | 2922000 | 2922999 | G |
| Kensington | 240 | 2923000 | 2923999 | X |
| Laurel 236 | 240 | 2942000 | 2942999 | G |
| Laurel 236 | 240 | 2952000 | 2952999 | G |
| Hagerstown | 240 | 3131000 | 3131999 | G |
| Hagerstown | 240 | 3132000 | 3132999 | G |
| Hagerstown | 240 | 3133000 | 3133999 | G |
| Hagerstown | 240 | 3134000 | 3134999 | G |
| Hagerstown | 240 | 3139000 | 3139999 | G |
| Rockville | 240 | 3140000 | 3140999 | G |
| Rockville | 240 | 3141000 | 3141999 | G |
| Rockville | 240 | 3142000 | 3142999 | G |
| Rockville | 240 | 3143000 | 3143999 | G |
| Rockville | 240 | 3144000 | 3144999 | G |
| Rockville | 240 | 3145000 | 3145999 | G |
| Rockville | 240 | 3146000 | 3146999 | G |
| Rockville | 240 | 3147000 | 3147999 | G |
| Rockville | 240 | 3148000 | 3148999 | G |
| Frederick | 240 | 3150000 | 3150999 | G |
| Frederick | 240 | 3159000 | 3159999 | G |
| Clinton | 240 | 3180000 | 3180999 | G |
| Rockville | 240 | 3281000 | 3281999 | G |
| Cumberland | 240 | 3620000 | 3620999 | G |
| Odenton | 240 | 3730000 | 3739999 | G |
| Frederick | 240 | 3790000 | 3799999 | G |
| Myersville | 240 | 3850000 | 3850999 | G |
| Myersville | 240 | 3851000 | 3851999 | X |
| Rockville | 240 | 3860000 | 3860999 | G |
| Rockville | 240 | 3862000 | 3862999 | G |
| Rockville | 240 | 3863000 | 3863999 | G |
| Rockville | 240 | 3864000 | 3864999 | G |
| Rockville | 240 | 3865000 | 3865999 | G |
| Rockville | 240 | 3866000 | 3866999 | G |
| Gaithersburg | 240 | 4041000 | 4041999 | G |
| Gaithersburg | 240 | 4042000 | 4042999 | G |
| Gaithersburg | 240 | 4043000 | 4043999 | G |
| Gaithersburg | 240 | 4044000 | 4044999 | G |
| Gaithersburg | 240 | 4045000 | 4045999 | G |
| Hagerstown | 240 | 4200000 | 4209999 | G |
| Frederick | 240 | 4392000 | 4392999 | G |
| Oakland | 240 | 4420000 | 4420999 | G |
| Oakland | 240 | 4424000 | 4424999 | X |
| Oakland | 240 | 4429000 | 4429999 | X |
| Rockville | 240 | 4530000 | 4530999 | G |
| Rockville | 240 | 4531000 | 4531999 | G |
| Rockville | 240 | 4532000 | 4532999 | G |
| Rockville | 240 | 4533000 | 4533999 | G |
| Rockville | 240 | 4535000 | 4535999 | G |
| Rockville | 240 | 4536000 | 4536999 | G |
| Rockville | 240 | 4537000 | 4537999 | G |
| Rockville | 240 | 4538000 | 4538999 | G |
| Rockville | 240 | 4539000 | 4539999 | G |
| Laurel 236 | 240 | 4560000 | 4560999 | G |
| Laurel 236 | 240 | 4562000 | 4562999 | G |
| Laurel 236 | 240 | 4563000 | 4563999 | G |
| Laurel 236 | 240 | 4564000 | 4564999 | G |
| Laurel 236 | 240 | 4565000 | 4565999 | G |
| Laurel 236 | 240 | 4566000 | 4566999 | G |
| Laurel 236 | 240 | 4567000 | 4567999 | G |
| Laurel 236 | 240 | 4568000 | 4568999 | G |
| Laurel 236 | 240 | 4569000 | 4569999 | G |
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