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Area Code 438

Prefix City State
238
257
274
275
281 Houston TX
288
289
323
324
333 Montreal CN
338
365 Louisville KY
380
381
382
390
391
392
394
402
490
610 Montreal QC
777 Montreal QC
800
820
837
862
863
875
876
877
878
879
881
882
883
884
885
886
888
899
933
935
936
937
938
939
993
998