Question

美国电话区号4是哪里？

请教：+1 4 是美国还是加拿大的电话？能知道是哪一个州吗？以及和北京的视察是多少？谢谢

Answer 1

＋1 是美国
401 RI -5 Rhode Island
402 NE -6 E Nebraska: Omaha, Lincoln
403 AB -7 Canada: Southern Alberta (see 780, 867)
404 GA -5 N Georgia: Atlanta and suburbs (see overlay 678, split 770)
405 OK -6 W Oklahoma: Oklahoma City (see 580)
406 MT -7 Montana
407 FL -5 Central Florida: Metro Orlando (see overlay 689, eff 7/02; split 321)
408 CA -8 Cent. Coastal California: San Jose (see overlay 669)
409 TX -6 SE Texas: Galveston, Port Arthur, Beaumont (splits 936, 979)
410 MD -5 E Maryland: Baltimore, Annapolis, Chesapeake Bay area, Ocean City (see 443)
411 -- -- Reserved for special applications
412 PA -5 W Pennsylvania: Pittsburgh (see split 724, overlay 878)
413 MA -5 W Massachusetts: Springfield
414 WI -6 SE Wisconsin: Milwaukee County (see splits 920, 262)
415 CA -8 California: San Francisco County and Marin County on the north side of the Golden Gate Bridge, extending north to Sonoma County (see 650)
416 ON -5 Canada: S Cent. Ontario: Toronto (see overlay 647, eff 3/5/01)
417 MO -6 SW Missouri: Springfield
418 QC -5/-4 Canada: NE Quebec: Quebec
419 OH -5 NW Ohio: Toledo (see overlay 567, perm 1/1/02)
423 TN -5 E Tennessee, except Knoxville metro area: Chattanooga, Bristol, Johnson City, Kingsport, Greeneville (see split 865; part of what used to be 615)
424 CA -8 S California: Los Angeles (see split 562; overlaid on 310 mand 7/26/06)
425 WA -8 Washington: North Tier - Everett, Bellevue (split from 206, see also 253; overlay 564)
430 TX -6 NE Texas: Tyler (overlaid on 903, eff 7/20/02)
432 TX -7/-6 W Texas: Big Spring, Midland, Odessa (split from 915, eff 4/5/03)
434 VA -5 E Virginia: Charlottesville, Lynchburg, Danville, South Boston, and Emporia (split from 804, eff 6/1/01; see also 757)
435 UT -7 Rural Utah outside Salt Lake City metro (see split 801)
438 QC -5 Canada: SW Quebec: Montreal city (overlaid on 514, [delayed until 6/06] eff 10/10/03, mand 2/7/04)
440 OH -5 Ohio: Cleveland metro area, excluding Cleveland (split from 216, see also 330)
441 -- -4 Bermuda (part of what used to be 809)
442 CA -8 Far north suburbs of San Diego (Oceanside, Escondido, SUSPENDED -- originally perm 10/21/00, mand 4/14/01)
443 MD -5 E Maryland: Baltimore, Annapolis, Chesapeake Bay area, Ocean City (overlaid on 410)
450 QC -5/-4 Canada: Southeastern Quebec; suburbs outside metro Montreal
456 -- -- Inbound International
464 IL -6 Illinois: south suburbs of Chicago (see 630; overlaid on 708)
469 TX -6 Texas: Dallas Metro (overlays 214/972)
470 GA -5 Georgia: Greater Atlanta Metropolitan Area (overlaid on 404/770/678; mand 9/2/01)
473 -- -4 Grenada ("new" -- split from 809)
475 CT -5 Connecticut: New Haven, Greenwich, southwestern (postponed; was perm 1/6/01; mand 3/1/01???)
478 GA -5 Central Georgia: Macon (split from 912; see also 229; perm 8/1/00; mand 8/1/01)
479 AR -6 NW Arkansas: Fort Smith, Fayetteville, Springdale, Bentonville (SPLIt from 501, perm 1/19/02, mand 7/20/02)
480 AZ -7* Arizona: East Phoenix (see 520; also Phoenix split 602, 623)
484 PA -5 SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown (see 610)

from http://www.bennetyee.org/ucsd-pages/area.html