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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 |
|---|---|---|---|---|
| Ridge | 240 | 2199000 | 2199999 | G |
| Bowie-Glenn Dale | 240 | 2452000 | 2452999 | G |
| Waldorf | 240 | 2700000 | 2700999 | G |
| Waldorf | 240 | 2705000 | 2705999 | G |
| Clinton | 240 | 3033000 | 3033999 | G |
| Bowie-Glenn Dale | 240 | 3352000 | 3352999 | G |
| Bowie-Glenn Dale | 240 | 3353000 | 3353999 | G |
| Upper Marlboro | 240 | 3396000 | 3396999 | G |
| Upper Marlboro | 240 | 3398000 | 3398999 | G |
| Clinton | 240 | 3489000 | 3489999 | G |
| La Plata | 240 | 3497000 | 3497999 | G |
| Williamsport | 240 | 3660000 | 3660999 | X |
| Williamsport | 240 | 3662000 | 3662999 | X |
| Capitol Heights | 240 | 3926000 | 3926999 | G |
| Clinton | 240 | 4071000 | 4071999 | G |
| Leonardtown | 240 | 4340000 | 4340999 | G |
| Waldorf | 240 | 4481000 | 4481999 | G |
| Waldorf | 240 | 4484000 | 4484999 | G |
| Rockville | 240 | 4534000 | 4534999 | G |
| Mechanicsville | 240 | 4669000 | 4669999 | G |
| Laurel 236 | 240 | 4707000 | 4707999 | G |
| Layhill | 240 | 4716000 | 4716999 | G |
| Tompkinsville | 240 | 5033000 | 5033999 | G |
| Tompkinsville | 240 | 5038000 | 5038999 | G |
| Tompkinsville | 240 | 5039000 | 5039999 | G |
| Bethesda | 240 | 5415000 | 5415999 | G |
| Clinton | 240 | 5466000 | 5466999 | G |
| Rockville | 240 | 5515000 | 5515999 | X |
| Rockville | 240 | 5525000 | 5525999 | G |
| Bowie-Glenn Dale | 240 | 5566000 | 5566999 | G |
| Kensington | 240 | 5585000 | 5585999 | G |
| Kensington | 240 | 5586000 | 5586999 | G |
| Ashton 236 | 240 | 5595000 | 5595999 | G |
| Berwyn | 240 | 6164000 | 6164999 | G |
| Rockville | 240 | 6182000 | 6182999 | G |
| Rockville | 240 | 6183000 | 6183999 | G |
| Kensington | 240 | 6214000 | 6214999 | G |
| Kensington | 240 | 6215000 | 6215999 | G |
| Hyattsville | 240 | 6235000 | 6235999 | G |
| Hyattsville | 240 | 6237000 | 6237999 | G |
| Berwyn Heights | 240 | 6244000 | 6244999 | G |
| Berwyn Heights | 240 | 6246000 | 6246999 | G |
| Berwyn | 240 | 6247000 | 6247999 | G |
| Berwyn | 240 | 6249000 | 6249999 | G |
| Hughesville | 240 | 6336000 | 6336999 | G |
| Silver Spring | 240 | 6410000 | 6410999 | G |
| Silver Spring | 240 | 6411000 | 6411999 | G |
| Silver Spring | 240 | 6417000 | 6417999 | G |
| Silver Spring | 240 | 6509000 | 6509999 | G |
| Mechanicsville | 240 | 6522000 | 6522999 | G |
| Rockville | 240 | 6603000 | 6603999 | G |
| Lexington Park-Great Mills | 240 | 6610000 | 6610999 | G |
| Lexington Park-Great Mills | 240 | 6616000 | 6616999 | G |
| Berwyn Heights | 240 | 6848000 | 6848999 | G |
| Brandywine | 240 | 6859000 | 6859999 | G |
| Gaithersburg | 240 | 7021000 | 7021999 | G |
| Gaithersburg | 240 | 7022000 | 7022999 | G |
| Laurel 238 | 240 | 7125000 | 7125999 | G |
| Laurel 236 | 240 | 7135000 | 7135999 | G |
| Laurel 236 | 240 | 7136000 | 7136999 | G |
| Capitol Heights | 240 | 7165000 | 7165999 | G |
| Capitol Heights | 240 | 7166000 | 7166999 | G |
| Oxon Hill | 240 | 7248000 | 7248999 | G |
| Damascus 236 | 240 | 7457000 | 7457999 | G |
| Waldorf | 240 | 7544000 | 7544999 | G |
| Bethesda | 240 | 7601000 | 7601999 | G |
| Bethesda | 240 | 7602000 | 7602999 | G |
| Upper Marlboro | 240 | 7631000 | 7631999 | G |
| Upper Marlboro | 240 | 7632000 | 7632999 | G |
| Poolesville | 240 | 7713000 | 7713999 | G |
| Poolesville | 240 | 7714000 | 7714999 | G |
| Damascus 236 | 240 | 7822000 | 7822999 | G |
| Damascus 236 | 240 | 7823000 | 7823999 | G |
| Laurel 236 | 240 | 7861000 | 7861999 | G |
| Brandywine | 240 | 7876000 | 7876999 | G |
| Brandywine | 240 | 7877000 | 7877999 | G |
| Bethesda | 240 | 8001000 | 8001999 | G |
| Gaithersburg | 240 | 8013000 | 8013999 | G |
| Bethesda | 240 | 8027000 | 8027999 | G |
| Bethesda | 240 | 8028000 | 8028999 | G |
| Leonardtown | 240 | 8082000 | 8082999 | G |
| Leonardtown | 240 | 8088000 | 8088999 | G |
| Ashton 236 | 240 | 8172000 | 8172999 | G |
| Ashton 236 | 240 | 8173000 | 8173999 | G |
| Brandywine | 240 | 8234000 | 8234999 | G |
| Brandywine | 240 | 8235000 | 8235999 | G |
| Brandywine | 240 | 8238000 | 8238999 | G |
| Hyattsville | 240 | 8250000 | 8250999 | G |
| Hyattsville | 240 | 8251000 | 8251999 | G |
| Hyattsville | 240 | 8252000 | 8252999 | G |
| Capitol Heights | 240 | 8300000 | 8300999 | G |
| Capitol Heights | 240 | 8301000 | 8301999 | G |
| Capitol Heights | 240 | 8303000 | 8303999 | G |
| Capitol Heights | 240 | 8304000 | 8304999 | G |
| Capitol Heights | 240 | 8305000 | 8305999 | G |
| Frederick | 240 | 8315000 | 8315999 | G |
| Frederick | 240 | 8316000 | 8316999 | G |
| Frederick | 240 | 8317000 | 8317999 | G |
| Frederick | 240 | 8318000 | 8318999 | G |
| Hughesville | 240 | 8378000 | 8378999 | G |
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