NPA-NXX to LATA Information (NXL) Field Descriptions |
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Field/Object |
Descriptions |
Valid Values/Actions |
NPA |
This required 3 numeric characters in the range from 000-999, excluding all X00, X11, and 8XX (Toll-Free) codes. The Numbering Plan Area (NPA) must be a valid code in the TFNRegistryâ„¢ Plain Old Telephone Service (POTS) NPA Table where the Effective Date is less than or equal to the Effective Date of the NPA-NXX. |
3 Characters |
NXX |
This required 3 numeric characters; N=0-9, X=0-9; range 000-999. |
3 Characters |
LATA |
Valid up to 3-digit LATA known to TFNRegistry. |
3-digit code |
OCN |
The Operating Company Number (OCN) from the Terminating Point Master (TPM) database identifies either the Incumbent Local Exchange Carrier (ILEC) or the Competitive Local Exchange Carrier (CLEC) that controls the NPA-NXX and offers telecom service to its subscriber lines. |
4 Characters |
CO |
The Company Code (CO) from the TPM database identifies the ILEC that operates the central office switch and the Common Channeling Signal (CCS) Network serving the NPA-NXX. |
2 Characters |
Effective Date |
Optional data entry field that identifies the Effective Date for the NPA-NXX to LATA and company codes association. Effective date must be later than the current date at the time the entry is established and cannot be greater than one year from the current date. |
MM/DD/YYYY |
Status |
Status is derived field based on the Effective Date on the NXL record:
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Status values:
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