400 易识码（特服号）
401 Rhode Island
402 Nebraska
403 Alberta
404 Georgia
405 Oklahoma
406 Montana
407 Florida
408 California
409 Texas
410 Maryland
411 Local Directory Assistance
412 Pennsylvania
413 Massachusetts
414 Wisconsin
415 California
416 Ontario
417 Missouri
418 Quebec
419 Ohio
420 Geographic Relief Code
421 Geographic Relief Code
422 易识码（特服号）
423 Tennessee
424 California
425 Washington
426 Geographic Relief Code
427 General Purpose Code
428 General Purpose Code
429 General Purpose Code
430 Geographic Relief Code
431 Geographic Relief Code
432 Geographic Relief Code
433 易识码（特服号）
434 General Purpose Code
435 Utah
436 Geographic Relief Code
437 Geographic Relief Code
438 General Purpose Code
439 Geographic Relief Code
440 Ohio
441 Bermuda
442 California
443 Maryland
444 易识码（特服号）
445 Geographic Relief Code
446 Geographic Relief Code
447 Geographic Relief Code
448 General Purpose Code
449 Geographic Relief Code
450 Quebec
451 General Purpose Code
452 General Purpose Code
453 General Purpose Code
454 General Purpose Code
455 易识码（特服号）
456 Inbound International
457 Geographic Relief Code
458 Geographic Relief Code
459 Geographic Relief Code
460 Geographic Relief Code
461 Geographic Relief Code
462 General Purpose Code
463 Geographic Relief Code
464 Illinois
465 Geographic Relief Code
466 易识码（特服号）
467 General Purpose Code
468 Geographic Relief Code
469 Texas
470 Geographic Relief Code
471 General Purpose Code
472 Geographic Relief Code
473 Grenada
474 Geographic Relief Code
475 Geographic Relief Code
476 General Purpose Code
477 易识码（特服号）
478 Geographic Relief Code
479 Geographic Relief Code
480 Arizona
481 General Purpose Code
482 Geographic Relief Code
483 Geographic Relief Code
484 Pennsylvania
485 General Purpose Code
486 Geographic Relief Code
487 General Purpose Code
488 易识码（特服号）
489 General Purpose Code
490 扩展码
491 扩展码
492 扩展码
493 扩展码
494 扩展码
495 扩展码
496 扩展码
497 扩展码
498 扩展码
499 扩展码
