001857
说明：857是美国内部城市麻萨诸塞州之间的长途区号，从美国以外拨打麻萨诸塞州电话需要加上美国的bet365官方1，也就是美国麻萨诸塞州的国际城市区号为001857或者写为001-857、0010857、+1-857、+1+857、+1857、00-1-857、00 1 857。
以857开头的号码前缀列表
| 号码前缀 | 固话/手机 | 主要城市 | bet365官方 |
| (857) 200- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 201- | 手机 | Winthrop | Sprint Spectrum L.p. |
| (857) 202- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 203- | 固话 | Jamaica Plain | Verizon New England Inc. |
| (857) 204- | 固话 | Boston | Omnipoint Miami E License |
| (857) 205- | 手机 | Boston | New Cingular Wireless PCS - DC |
| (857) 206- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 207- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 208- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 209- | 固话 | Cambridge | Broadwing Communications |
| (857) 210- | 手机 | Boston | Sprint Spectrum L.p. |
| (857) 212- | 手机 | Boston | Sprint Spectrum L.p. |
| (857) 213- | 固话 | Boston | Paetec Communications |
| (857) 214- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 215- | 固话 | Brookline | Verizon New England Inc. |
| (857) 216- | 固话 | Cambridge | Ymax Communications Corp. |
| (857) 217- | 固话 | Dorchester | Sprint Spectrum L.p. |
| (857) 218- | 固话 | Brookline | Verizon New England Inc. |
| (857) 219- | 固话 | Boston | Neutral Tandem-massachusetts |
| (857) 220- | 固话 | Dorchester | Broadview Networks |
| (857) 221- | 手机 | Boston | Sprint Spectrum L.p. |
| (857) 222- | 手机 | Boston | Omnipoint Miami E License |
| (857) 223- | 固话 | Boston | Ctc Communications Corp. |
| (857) 224- | 固话 | Boston | Verizon New England Inc. |
| (857) 225- | 手机 | Brookline | Cellco Partnership DBA Verizon Wireless |
| (857) 226- | 固话 | Newton | Dsci Corporation |
| (857) 227- | 固话 | Somerville | Mcimetro Access Transmission Services LLC |
| (857) 228- | 固话 | Watertown | Ctc Communications Corp. |
| (857) 229- | 固话 | Newton | Ctc Communications Corp. |
| (857) 230- | 手机 | Roxbury | Omnipoint Miami E License |
| (857) 231- | 手机 | Newton | Sprint Spectrum L.p. |
| (857) 232- | 固话 | Newton | Neutral Tandem-massachusetts |
| (857) 233- | 固话 | Boston | Sprint Spectrum L.p. |
| (857) 234- | 手机 | Brookline | Omnipoint Miami E License |
| (857) 235- | 固话 | Cambridge | Verizon New England Inc. |
| (857) 236- | 手机 | Boston | Metro PCS |
| (857) 237- | 手机 | Boston | Metro PCS |
| (857) 238- | 固话 | Boston | Verizon New England Inc. |
| (857) 239- | 固话 | Boston | Cbeyond Communications |
| (857) 240- | 固话 | Cambridge | Peerless Network Of Massachusetts |
| (857) 241- | 固话 | Boston | Broadwing Communications |
| (857) 242- | 手机 | Cambridge | Dsci Corporation |
| (857) 243- | 固话 | Boston | Broadvox-clec |
| (857) 244- | 固话 | Boston | Bandwidth.com Clec |
| (857) 245- | 固话 | Brookline | Ymax Communications Corp. |
| (857) 246- | 手机 | Boston | Metro PCS |
| (857) 247- | 手机 | Boston | Metro PCS |
| (857) 248- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 249- | 手机 | Boston | Metro PCS |
| (857) 250- | 手机 | Boston | Omnipoint Miami E License |
| (857) 251- | 手机 | Boston | Metro PCS |
| (857) 252- | 固话 | Quincy | Broadview Networks |
| (857) 253- | 固话 | Cambridge | Broadview Networks |
| (857) 254- | 固话 | Boston | Broadview Networks |
| (857) 255- | 固话 | Newton | Broadview Networks |
| (857) 256- | 手机 | Cambridge | Peerless Network Of Massachusetts |
| (857) 257- | 手机 | S Boston | Sprint Spectrum L.p. |
| (857) 258- | 手机 | Boston | Metro PCS |
| (857) 259- | 手机 | Cambridge | New Cingular Wireless PCS - DC |
| (857) 260- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 261- | 手机 | Boston | Metro PCS |
| (857) 263- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 264- | 手机 | Boston | Omnipoint Miami E License |
| (857) 265- | 手机 | Boston | New Cingular Wireless PCS - DC |
| (857) 266- | 手机 | Boston | Metro PCS |
| (857) 267- | 固话 | Boston | Comcast Phone Of Massachusetts |
| (857) 268- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 269- | 固话 | Roxbury | Peerless Network Of Massachusetts |
| (857) 271- | 手机 | Dorchester | Sprint Spectrum L.p. |
| (857) 272- | 手机 | Boston | New Cingular Wireless PCS - DC |
| (857) 273- | 固话 | Jamaica Plain | Comcast Phone Of Massachusetts |
| (857) 277- | 固话 | Boston | Omnipoint Miami E License |
| (857) 284- | 手机 | Boston | Omnipoint Miami E License |
| (857) 285- | 固话 | Cambridge | Paetec Communications |
| (857) 288- | 手机 | Boston | Xo Massachusetts |
| (857) 293- | 固话 | East Boston | Broadview Networks |
| (857) 294- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 300- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 301- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 303- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 304- | 固话 | Watertown | Teleport Communications America |
| (857) 305- | 固话 | Boston | Level 3 Enhanced Services |
| (857) 307- | 固话 | Brookline | Verizon New England Inc. |
| (857) 312- | 手机 | Boston | Metro PCS |
| (857) 313- | 手机 | Boston | Omnipoint Miami E License |
| (857) 317- | 固话 | Boston | Centurylink Communications LLC |
| (857) 318- | 固话 | Boston | Allegiance Telecom |
| (857) 321- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 323- | 固话 | Chelsea | Verizon New England Inc. |
| (857) 333- | 手机 | Boston | Omnipoint Miami E License |
| (857) 334- | 手机 | Boston | Omnipoint Miami E License |
| (857) 342- | 手机 | Hyde Park | Cellco Partnership DBA Verizon Wireless |
| (857) 345- | 手机 | Hyde Park | Cellco Partnership DBA Verizon Wireless |
| (857) 350- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 362- | 固话 | Boston | Verizon New England Inc. |
| (857) 363- | 手机 | Everett | Cellco Partnership DBA Verizon Wireless |
| (857) 364- | 固话 | Brookline | Broadview Networks |
| (857) 366- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 368- | 固话 | Boston | Paetec Communications |
| (857) 373- | 固话 | Needham | Broadview Networks |
| (857) 377- | 固话 | Boston | Paetec Communications |
| (857) 383- | 手机 | Boston | Teleport Communications America |
| (857) 389- | 手机 | Charlestown | Omnipoint Miami E License |
| (857) 399- | 固话 | Roxbury | Bandwidth.com Clec |
| (857) 400- | 固话 | Boston | Bandwidth.com Clec |
| (857) 401- | 固话 | S Boston | Broadview Networks |
| (857) 403- | 固话 | Quincy | Paetec Communications |
| (857) 404- | 固话 | Newton | Comcast Phone Of Massachusetts |
| (857) 413- | 固话 | Boston | Broadwing Communications |
| (857) 415- | 固话 | Boston | Vonage Network Inc. |
| (857) 417- | 手机 | Boston | Metro PCS |
| (857) 444- | 固话 | Boston | Peerless Network Of Massachusetts |
| (857) 445- | 手机 | Boston | New Cingular Wireless PCS - DC |
| (857) 449- | 固话 | Boston | Comcast Phone Of Massachusetts |
| (857) 452- | 手机 | Charlestown | Sprint Spectrum L.p. |
| (857) 453- | 固话 | Boston | Broadwing Communications |
| (857) 472- | 手机 | Boston | New Cingular Wireless PCS - DC |
| (857) 488- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 492- | 手机 | Roxbury | Sprint Spectrum L.p. |
| (857) 496- | 固话 | S Boston | Comcast Phone Of Massachusetts |
| (857) 498- | 手机 | Brighton | New Cingular Wireless PCS - DC |
| (857) 499- | 手机 | Quincy | New Cingular Wireless PCS - DC |
| (857) 500- | 固话 | Bedford | Cellco Partnership DBA Verizon Wireless |
| (857) 523- | 手机 | Somerville | Cellco Partnership DBA Verizon Wireless |
| (857) 524- | 固话 | S Boston | Allegiance Telecom |
| (857) 526- | 手机 | Quincy | Sprint Spectrum L.p. |
| (857) 540- | 手机 | Brighton | Sprint Spectrum L.p. |
| (857) 544- | 手机 | Roxbury | Omnipoint Miami E License |
| (857) 547- | 固话 | Jamaica Plain | Broadview Networks |
| (857) 559- | 固话 | Boston | Allegiance Telecom |
| (857) 574- | 固话 | East Boston | Ctc Communications Corp. |
| (857) 576- | 固话 | Brookline | Local Access LLC |
| (857) 588- | 固话 | Charlestown | Allegiance Telecom |
| (857) 598- | 固话 | Malden | Xo Massachusetts |
| (857) 600- | 固话 | Cambridge | Bandwidth.com Clec |
| (857) 615- | 手机 | Boston | Metro PCS |
| (857) 626- | 固话 | Belmont | Mci Worldcom Communications |
| (857) 636- | 手机 | Newton | Cellco Partnership DBA Verizon Wireless |
| (857) 654- | 手机 | Boston | Omnipoint Miami E License |
| (857) 701- | 手机 | Roxbury | Omnipoint Miami E License |
| (857) 702- | 手机 | Boston | 365 Wireless |
| (857) 719- | 手机 | Jamaica Plain | Sprint Spectrum L.p. |
| (857) 728- | 固话 | Jamaica Plain | Allegiance Telecom |
| (857) 753- | 手机 | Boston | Cellco Partnership DBA Verizon Wireless |
| (857) 756- | 固话 | Cambridge | Metropolitan Telecommunications Of Mass DBA Mettel |
| (857) 776- | 固话 | Chelsea | Level 3 Communications |
| (857) 777- | 固话 | Cambridge | Peerless Network Of Massachusetts |
| (857) 814- | Unknown | Multiple Ocn Listing | |
| (857) 816- | 固话 | Cambridge | Xo Massachusetts |
| (857) 829- | 手机 | Cambridge | Sprint Spectrum L.p. |
| (857) 869- | 手机 | Boston | Omnipoint Miami E License |
| (857) 888- | 手机 | Everett | Sprint Spectrum L.p. |
| (857) 891- | 手机 | Boston | Omnipoint Miami E License |
| (857) 919- | 手机 | Brighton | Omnipoint Miami E License |
| (857) 928- | 手机 | Cambridge | Omnipoint Miami E License |
| (857) 930- | Unknown | Rclec | |
| (857) 939- | 手机 | Quincy | Cellco Partnership DBA Verizon Wireless |
| (857) 991- | 固话 | Boston | Comcast Phone Of Massachusetts |
| (857) 995- | 固话 | Somerville | Broadwing Communications |
| (857) 996- | 固话 | Boston | Verizon New England Inc. |
| (857) 997- | 固话 | Somerville | Local Access LLC |
| (857) 998- | 手机 | Cambridge | Cellco Partnership DBA Verizon Wireless |
| (857) 999- | 固话 | Cambridge | Peerless Network Of Massachusetts |
友情提示：拨打长途电话的办法很多，可以使用各通信bet365官方（包括中国电信、中国移动、中国联通等）固定电话、移动手机或者上网电脑来实现通话功能，固定电话、移动手机可以直接拨打对方号码也可以通过IP电话（又名VoIP电话、网络电话）拨打，上网电脑可以免费与对方上网电脑通话也可以低价拨打对方固定电话、移动手机，请根据各自情况综合考虑选用。
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