NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, last 30 days — NPA 318
ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 1
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2022-03-22 318-978 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J RINGGOLD LA
2022-03-14 318-819 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → CSC VOICE, LLC 612K JONESBORO 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
2022-03-04 318-817 0XXX1XXX9XXX · 3 holders which blocks → LBH, LLC DBA CAMERON COMMUNICATIONS - LA 645C OAKDALE 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
2022-02-15 318-806 0XXX1XXX4XXX · 3 holders which blocks → CSC VOICE, LLC 612K RINGGOLD LA
2022-02-03 318-804 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTEREY 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
2021-12-10 318-786 0XXX1XXX2XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F BUNKIE LA
2021-12-10 318-802 0XXX3XXX9XXX · 2 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 TALLULAH LA
2021-12-07 318-895 0–9 XXXall 10 · 2 holders which blocks → TWILIO INTERNATIONAL, INC. 506J SHREVEPORT LA
2021-12-03 318-785 0XXX6XXX8XXX · 3 holders which blocks → CSC VOICE, LLC 612K MOREAUVL LA
2021-11-04 318-831 0XXX1XXX2XXX4XXX8XXX · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K ST LANDRY LA
2021-07-14 318-783 0XXX3XXX · 2 holders which blocks → ONVOY, LLC - LA 749E BORDELONVL LA
2021-07-14 318-784 0XXX which blocks → ONVOY, LLC - LA 749E BIG CANE LA
2021-07-14 318-850 0XXX1XXX2XXX5XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E PLAUCHEVL LA
2021-06-29 318-782 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C ALEXANDRIA LA
2021-05-10 318-774 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 RAYVILLE LA
2021-04-21 318-764 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 COLUMBIA LA
2021-04-17 318-763 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 OAKDALE LA
2021-04-14 318-901 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H SHREVEPORT LA
2021-04-01 318-761 0–9 XXXall 10 · 3 holders which blocks → IP HORIZON LLC 515J SHREVEPORT LA
2021-03-19 318-760 0XXX1XXX6XXX8XXX · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C COUSHATTA LA
2021-01-29 318-781 2XXX3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → ONVOY, LLC - LA 749E ARCADIA LA
2021-01-29 318-810 0XXX1XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → ONVOY, LLC - LA 749E COLFAX LA
2020-12-09 318-753 0–9 XXXwhole prefix which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ALEXANDRIA LA
2020-11-20 318-750 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2020-08-28 318-740 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FERRIDAY LA
2020-07-15 318-739 0XXX1XXX3XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F MANSURA LA
2019-11-20 318-735 1XXX7XXX8XXX · 2 holders which blocks → TELNYX LLC 073H SHREVEPORT LA
2019-11-05 318-725 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J SHREVEPORT LA
2019-10-21 318-705 1XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - LA 749E PL DEALING LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.