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
2026-09-01 318-486 0XXX1XXX9XXX which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 RUSTON LA
2026-07-23 318-384 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2026-07-22 318-337 0XXX which blocks → VOIP INNOVATIONS, LLC 597F BENTON LA
2026-02-27 318-896 0XXX which blocks → WAVENATION, LLC 700J SHREVEPORT LA
2026-02-23 318-328 0XXX1XXX8XXX · 2 holders which blocks → WIRETAP TELECOM, LLC. 733J SHREVEPORT LA
2026-02-12 318-892 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2026-02-12 318-893 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2026-02-12 318-952 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2025-12-23 318-454 1XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → E. RITTER COMMUNICATIONS, LLC 128L SHREVEPORT LA
2025-12-22 318-318 0XXX2XXX3XXX4XXX7XXX8XXX9XXX which blocks → ONVOY, LLC - LA 749E MONTGOMERY LA
2025-04-24 318-879 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2025-04-18 318-930 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2025-04-02 318-857 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2025-03-27 318-457 7XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SHREVEPORT LA
2025-03-14 318-853 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2025-03-14 318-856 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - LA 749E RUSTON LA
2025-03-10 318-948 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2025-01-22 318-921 1XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 478J SHREVEPORT LA
2024-11-21 318-870 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2024-11-11 318-917 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F MONROE LA
2024-07-30 318-839 7XXX which blocks → AT&T ENTERPRISES, LLC 516C GRAND CANE LA
2024-07-30 318-845 7XXX which blocks → AT&T ENTERPRISES, LLC 516C HARRISONBG LA
2024-07-30 318-849 7XXX which blocks → AT&T ENTERPRISES, LLC 516C LISBON LA
2024-07-30 318-851 7XXX which blocks → AT&T ENTERPRISES, LLC 516C SALINE LA
2024-06-21 318-904 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - LA 749E MONROE LA
2024-06-12 318-919 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MARKSVILLE LA
2024-06-10 318-915 0–9 XXXall 10 · 2 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 BASTROP LA
2024-06-05 318-835 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - LA 749E MINDEN LA
2024-05-13 318-902 0XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINNFIELD LA
2024-03-22 318-897 0XXX1XXX which blocks → ONVOY, LLC - LA 749E OAK GROVE LA
2024-02-09 318-829 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HAUGHTON LA
2024-02-06 318-736 0XXX1XXX8XXX · 2 holders which blocks → ONVOY, LLC - LA 749E KEITHVILLE LA
2023-11-27 318-696 6XXX which blocks → TERRA NOVA TELECOM INC. 145J PLEASANTHL LA
2023-06-29 318-260 0XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J COLLINSTON LA
2023-06-22 318-890 0XXX which blocks → ONVOY SPECTRUM, LLC 624H WATERPROOF LA
2023-06-22 318-975 0XXX which blocks → ONVOY SPECTRUM, LLC 624H ZWOLLE LA
2023-06-22 318-983 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WINNFIELD LA
2023-06-16 318-830 0XXX1XXX3XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H FARMERVL LA
2023-06-16 318-844 4XXX which blocks → ONVOY SPECTRUM, LLC 624H GIBSLAND LA
2023-06-14 318-530 0XXX1XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CALHOUN LA
2023-05-01 318-863 8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J SHREVEPORT LA
2023-03-10 318-522 5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → HD CARRIER LLC 321J SHREVEPORT LA
2022-11-22 318-913 0XXX1XXX2XXX4XXX9XXX · 3 holders which blocks → ONVOY, LLC - LA 749E MANGHAM LA
2022-10-17 318-203 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H SHREVEPORT LA
2022-09-02 318-440 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BLANCHARD LA
2022-09-01 318-836 0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 4 holders which blocks → ONVOY, LLC - LA 749E JENA LA
2022-05-13 318-944 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J SHREVEPORT LA
2022-04-19 318-860 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H SHREVEPORT LA
2022-03-28 318-821 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J MONROE LA
2022-03-22 318-873 0XXX1XXX3XXX4XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ST JOSEPH 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.