| NCO Field Descriptions | ||
| Field/Object | Descriptions | Valid Values/Actions |
| New NPA | New Numbering Plan Areas (NPAs) in the geographic area. Identifies the area code within the specified State/Province. | Required field. 3-digit new NPA (i.e. area code). Example: 345, 908, 408, 650. Only digits (numeric) are supported. |
| State/Province | Identifies the state/province for the new NPA Code Opening / Overlay. | View only. 2-alpha State/Province code. Example: CA, VA, TX, AB |
| Open Date | Date on which all telecommunication facilities will recognize and route the new NPA correctly. Entry is allowed on the NCO business function only. | View only. Date in the format of MM/DD/YYYY. It can be equal to or greater than Open-X Date. |
| Open-X Date | Date on which the new NPA mapping is in-progress. | View only. Date must be entered in MM/DD/YYYY format. |
| Old NPA | Up to 20 existing 3-digit NPA codes within the same state/province can be shown in the OLD NPA field. | View only. |
| Common Channel Signaling (CCS) Network | 2 alpha network code or area of service code (US, XA, XB, XC, CN, CR, AT, VZ, etc.). | View only. |
| LATA | LATAs within the specified State/Province. | View only. 3 numeric characters. |
| Status | Identifies the current status of the Mass NPA Code/Opening Overlay. | TFNRegistryTM auto-generated field. Values include:
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