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Image:Area code 304.png|thumb|right|250px|Area Codes 304 and 681. This map is clickable; click on an area code to go to the page for that code. poly 0 1 0 151 9 159 12 165 25 163 30 152 35 153 33 137 40 135 38 128 44 118 52 132 61 122 62 109 79 91 82 96 113 73 125 23 127 9 124 4 108 12 106 18 93 20 84 14 65 28 53 29 43 18 43 0 Area code 740 poly 131 1 131 67 198 67 197 50 167 36 153 37 144 30 138 16 Area code 724 poly 132 1 218 1 215 37 198 50 165 35 173 25 178 14 170 12 166 6 149 7 140 14 Area code 724 poly 153 8 140 14 143 29 149 31 151 35 165 34 179 16 173 12 165 6 Area code 412 poly 190 69 189 108 214 84 217 88 229 75 233 81 248 84 252 75 258 75 262 71 272 78 279 78 288 96 298 99 298 69 Area codes 240 and 301 poly 220 1 217 33 199 54 199 67 262 67 270 49 281 49 290 35 281 23 280 0 Area code 814 poly 281 1 298 0 299 69 258 69 272 49 282 48 292 38 287 29 283 25 Area code 717 poly 44 1 130 0 125 4 109 9 105 18 94 19 83 13 67 28 53 29 42 19 Area codes 234 and 330 poly 0 153 3 152 13 164 9 185 26 217 47 230 15 249 0 260 Area code 606 poly 4 259 46 233 52 242 55 242 60 250 69 252 82 241 86 247 99 245 103 252 98 253 99 260 Area code 276 poly 254 87 283 112 290 96 300 101 299 184 271 172 271 152 247 150 221 172 221 180 211 186 187 184 166 217 176 217 169 236 139 257 139 260 99 259 98 255 103 252 100 245 109 243 113 238 116 239 130 233 134 237 142 230 142 225 145 223 146 216 152 204 160 198 166 178 173 176 172 169 178 163 180 154 188 154 189 161 202 164 210 148 214 147 215 135 225 139 232 126 234 130 237 124 240 124 245 116 250 113 Area code 540 poly 299 185 300 243 282 245 273 225 251 221 247 213 245 214 244 200 250 198 267 170 272 171 Area code 804 poly 267 169 272 169 270 152 245 150 221 170 220 180 210 186 187 183 164 218 175 218 169 235 138 258 138 260 299 260 299 244 282 245 272 226 250 221 248 213 244 214 244 202 250 193 Area code 434 desc top-left North American telephone area code 304 was established October 1947 as one of the original area codes, and serves all of the U.S. state of West Virginia. It was overlaid with area code 681, effective March 28, 2009. Due to West Virginia's low population density, it was one of the last remaining states with only one area code. However, in 2007, news reports indicated that West Virginia would soon need a new area code. This was largely due to the proliferation of cell phones and fax machines. On January 29, 2008, the West Virginia Public Service Commission voted 2-1 for a split of the existing 304 area code, with commission chairman Michael Albert dissenting in favor of an overlay. The proposed split had Charleston and points south (Huntington, Bluefield, Beckley) staying in 304, while the northern and eastern portions of the state (Wheeling, Morgantown, Clarksburg, Parkersburg) would have been split into a new area code.〔(WV to get second area code ). Associated Press, 2008-01-29.〕 However, telecommunications providers were overwhelmingly in favor of an overlay, as they wanted to spare customers the burden of having to change their numbers. They were still able to ask the Commission to reconsider, or appeal to the West Virginia State Supreme Court, for an overlay instead of a split. Over the following two weeks, numerous state and local government officials and various business interests voiced strong opposition to a split of 304, in favor of an overlay. Even Governor Joe Manchin voiced his support of an overlay. Several telecommunications providers then officially appealed to the Public Service Commission for an overlay, which was unanimously approved by all three commissioners on February 13, 2008. It was the first example of an entire state previously only served by a single code being overlaid. At one time, 932 was reserved for use as a future area code in West Virginia, but there has since been a 304-932 exchange code assigned in Charleston. ==Implementation dates for 681 code== Implementation dates for permissive and mandatory ten-digit local dialing, as well as the effective date of the overlay, were announced in Neustar NANPA's Planning Letter #375, issued March 21, 2008. * Permissive ten-digit local dialing of numbers in the existing 304 area code would begin no later than July 26, 2008. (During this period, local 304 calls could still be dialed with just seven digits.) * Mandatory ten-digit local dialing of existing 304 numbers took effect on February 28, 2009. (Calls within 304 dialed with just seven digits were no longer allowed.) * New numbers with the 681 area code became available on March 28, 2009, one month after the start of mandatory ten-digit dialing. * A test number for determining if routing to the new area code is in effect from any West Virginia telephone number, 681-990-TEST (8378), went into service on December 28, 2008 and remained active through June 28, 2009. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Area codes 304 and 681」の詳細全文を読む スポンサード リンク
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