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Central Office Code:521
This is the Central Office Code:521 page list. Its detail is as below.
Central office code | Country code | Remarks | Usage |
---|---|---|---|
521 | 1 246 | Not Allocated | Fixed Telephony |
Central office code | Country code | Remarks | Usage |
---|---|---|---|
521 | 1 246 | Not Allocated | Fixed Telephony |