NEW AREA CODE SPLIT 516 TO 631
Nassau & Suffolk Counties

Area Code Update
As of April 1, 2000, Suffolk County has a new area code 631. The area code 516 in Western Long Island (Nassau County) has not changed.

From Nov. 1 until April 1, 2000 calls placed to Suffolk using the 516 area code will still go through while callers become familiar with the new 631 code. After April 1, however, calls to Suffolk County telephone numbers must include the 631 area code to be completed.
THIS JUST IN!
The New York State Public Service Commission has directed that the grace dialing period for 516 be extended in about 50 telephone exchanges until October 2001. The following exchanges are affected:

Nassau 516: 294, 333, 338, 379, 479, 671, 681, 741, 873, 876, 931, 932, 937, 938, 942, 997

Suffolk 631: 207, 232, 234, 271, 289, 321, 342, 351, 385, 421, 423, 424, 425, 427, 447, 475, 547, 582, 585, 588, 654, 665, 666, 673, 689, 696, 727, 736, 737, 738, 751, 758, 842

631 AREA CODE PREFIX CHART

* Denotes prefix being duplicated in 631.

516 AREA CODE PREFIX CHART

* Denotes prefix being duplicated in 516.

204
205
206
207
208
209
216
217
218
224
225
226
231
232
233
234
242
243
244
246
249*
253
254
259
261
262
263
264*
265
266
267
269
271
272
273
274
277
281
282
283
284
286
287
288
289
293*
298
300
306
321
323
324
325
329
331
340
341
342
344
345
348
350
351
360
361
363
366

367*
368
369
370*
373
376
382
385
391*
395
399
404
406
415
418
419
420*
421
422
423
424
425
427
434
435
436
439
444
447
451
452*
462
467
468
471
472
473
474
475
476
477
478
491
492
493
499
501*
506
513
514
531*
537
543
544
547
548
549
563
567
577*
580
581
582
583
584
585
586

587
588
589
590
591
592
595
597
598*
603
610
614
615
618
630
632 
642
643
653
654
655
660
661
665
666
667
668
669
673
687
689
691*
692*
694*
696
698
701
710
715
717
722
723
724
725
726
727
728
732
734
736
737
738
740
744
749
751
752*
753*
754
755*
756*
757
758
760*
761
762
765

776
777*
778
784
787
788
789*
820
821
830
841*
842*
843*
844*
845*
847
851
852
853
854
856
858
859
862
863
864
874
878
881
884
888
893 
894
898
899
904
905
907
912
915
916
919
923
924
927*
928
929
940
941
951
952
953
955
956
957
961
962*
968
969
963
964
966
968
969
979
980
981
986*
989

203
210
213
214
215
219
220
221
222
223
227
228
229
230
235
236
237
238
239
240
241
245
247
248
249*
250
251
252
255
256
257
258
260
264*
268
270
275
276
278
279
280
285
290
291
292
293*
294
295
296
297
299
301
302
303
304
305
307
308
309
310
312
313
314
315
316
317
318
319
320
322
326
327

328
332
333
334
335
336
337
338
339
340
343
346
349
352
353
354
355
356
357
357
359
364
365
367*
370*
371
372
374
375
377
378
379
380
381
383
384
386
387
388
389
390
391*
392
393
396
397
398
400
401
402
403
405
407
408
409
410
412
413
414
416
417
420*
426
428
429
430
431
432
433
437
438
440

441
442
443
445
446
448
449
450
452
453
454*
455
456
457
458
459
460
461
463
464
465
466
469
470
479
480
481
482
483
484
485
486
487
488
489
490
494
495
496
497
498
501*
502
503
504
505
507
508
509
510
512
515
517
519
520
521
522
524
525
526
527
528
529
530
531*
532
533
534
535
536
538
539

541
542
545
546
551
552
553
554
555
556
557
558
559
560
561
562
564
565
566
568
569
570
571
572
573
574
575
576
577*
578
579
593
594
596
598*
599
601
602
604
605
606
608
609
612
613
616
619
620
621
622
623
624
625
626
627
628
629
633
634
635
636
637
638
639
640
641
644
645
646
647
648
649

650
651
652
656
657
658
659
662
663
664
670
671
672
674
675
676
677
678
679
680
681
682
683
684
685
686
688
690
691*
692*
693
694*
695
697
699
702
703
704
705
707
708
709
712
713
714
719
720
721
729
730
731
733
735
739
741
742
743
745
746
747
748
750
752*
753*
755*
756*
759
760
763
764
766
767

768
769
770
771
772
773
774
775
777*
779
780
781
783
785
786
789*
790
791
792
793
794
795
796
797
798
799
801
802
803
804
805
806
807
808
809
810
812
813
814
815
816
817
818
819
822
823
824
825
826
827
828
829
831
832
833
834
835
836
837
838
839
840
841*
842*
843*
844*
845*
846
847*
848
855
857

860
861
865
866
867
868
869
870
871
872
873
875
876
877
879
880
883
885
886
887
889
890
891
892
896
897
901
902
903
909
910
918
921
922
925
926
927*
930
931
932
933
934
935
937
938
939
942
943
944
946
947
948
949
954
962*
967
971
972
973
974
975
976
978
982
983
984
986*
995
997

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LINKS WITHIN NEW AREA CODES:

914 & 845 SPLIT | 212, 646,917 OVERLAY | 718 & 347 OVERLAY | 516 & 631 SPLIT

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