Local Calling Guide
Prefix list help
Here is a description of the table structure for prefix search results. Most columns contain links which lead to additional information. Not all columns will appear in every report; for example, if searching by rate centre, the RATE CENTRE column will not appear in the table, but instead appears at the top of the list.
| column | description |
|---|---|
| NPA-NXX-X | Show all prefixes that are a local call from the rate centre associated with that prefix. |
| Rate Centre | Show all prefixes in this rate centre, and all rate centres that are a local call from this rate centre. |
| Region | Show all prefixes in this region. |
| Switch | Show all prefixes associated with this switch. |
| OCN | Show all prefixes associated with this company. |
| LATA | Show all rate centres associated with this LATA. |
| Eff date | This date indicates when the prefix entered service (not shown for prefixes already in service). |
| Disc date | This date indicates when the prefix is scheduled to be disconnected. |
| Map | Link to map of rate centre associated with this prefix. |
Last updated: Thu, 20 Nov 2025 13:34:34 UTC
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