NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 318
TON80 COMMUNICATIONS, LLC 23
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2022-03-22 318-873 0XXX1XXX3XXX4XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ST JOSEPH LA
2022-03-22 318-978 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J RINGGOLD LA
2022-03-14 318-881 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SPENCER LA
2022-03-14 318-910 0XXX1XXX3XXX4XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OAK RIDGE LA
2022-03-09 318-885 0XXX2XXX3XXX4XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GEORGETOWN LA
2022-03-09 318-920 0XXX1XXX3XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HEBRON LA
2022-03-09 318-940 0XXX1XXX2XXX3XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J IDA LA
2022-03-09 318-960 0XXX1XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J JONESVILLE LA
2022-03-09 318-989 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ATHENS LA
2022-03-03 318-882 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MANSFIELD LA
2022-02-28 318-825 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WISNER LA
2022-02-28 318-898 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BOYCE LA
2022-02-28 318-928 0XXX1XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LECOMPTE LA
2022-02-28 318-937 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GLENMORA LA
2022-02-24 318-993 0XXX2XXX3XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J TULLOS LA
2022-02-22 318-943 0XXX4XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SIMMESPORT LA
2022-02-22 318-968 0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RODESSA LA
2022-02-17 318-842 0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J OLLA LA
2022-02-16 318-826 0XXX1XXX6XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J HOMER LA
2022-02-16 318-852 0XXX2XXX3XXX7XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GILLIAM LA
2022-02-16 318-867 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J KEITHVILLE LA
2022-01-27 318-886 0XXX2XXX6XXX7XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J FTNECESSTY LA
2022-01-27 318-942 0XXX1XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J CASTOR LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.