Telephone numbers beginning with 01473 belong to the Ipswich charge group.
The following numbers are local calls
to and from this charge group:
01206
01255
01394
01449
01728
01787
The following numbers are regional calls
to and from this charge group:
01284
01359
01376
01379
01440
01502
01508
01621
01638
01953
01986
All other calls are national calls.
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