NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2022-02-04 862-424 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MILLBURN NJ
2022-02-04 863-237 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 WAUCHULA FL
2022-02-04 904-787 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MIDDLEBURG FL
2022-02-04 909-925 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CHINO CA
2022-02-04 915-294 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J EL PASO TX
2022-02-04 929-884 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NWYRCYZN07 NY
2022-02-04 934-227 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 SMITHTOWN NY
2022-02-04 934-228 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BELLPORT NY
2022-02-04 937-934 0XXX1XXX2XXX4XXX · 3 holders which blocks → ONVOY, LLC - OH 464C JACKSONCTR OH
2022-02-04 959-283 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J GLASTONBY CT
2022-02-04 959-799 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J TORRINGTON CT
2022-02-04 970-814 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 DURANGO CO
2022-02-04 984-293 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E OXFORD NC
2022-02-04 984-866 0XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SELMA NC
2022-02-03 234-366 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 GREENSBURG OH
2022-02-03 276-746 0XXX2XXX7XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RIDGEWAY VA
2022-02-03 318-804 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONTEREY LA
2022-02-03 361-837 4XXX8XXX · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J BLESSING TX
2022-02-03 361-934 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ALICE TX
2022-02-03 423-203 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J CHATTNOOGA TN
2022-02-03 423-804 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F BRISTOL TN
2022-02-03 437-293 not yet reported which blocks → Iristel Inc. 154E Toronto —
2022-02-03 447-228 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC 224C OREANA IL
2022-02-03 463-268 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F GREENFIELD IN
2022-02-03 463-269 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2022-02-03 581-690 not yet reported which blocks → Iristel Inc. 154E Chicoutimi —
2022-02-03 726-567 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANANTONIO TX
2022-02-03 743-342 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J WALKERTOWN NC
2022-02-03 762-557 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RANGER GA
2022-02-03 774-684 0XXX2XXX3XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ORLEANS MA
2022-02-03 825-570 not yet reported which blocks → Iristel Inc. 154E St. Albert —
2022-02-03 825-877 not yet reported which blocks → Iristel Inc. 154E Camrose —
2022-02-03 839-216 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2022-02-03 839-832 0XXX1XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J SANTEE SC
2022-02-03 848-363 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MONMTH JCT NJ
2022-02-03 862-746 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LIVINGSTON NJ
2022-02-03 864-667 0XXX1XXX2XXX3XXX6XXX7XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MOUNTVILLE SC
2022-02-03 870-849 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 HARRISON AR
2022-02-03 930-261 9XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J TERREHAUTE IN
2022-02-03 986-742 6XXX which blocks → TON80 COMMUNICATIONS, LLC 516J MINIDOKA ID
2022-02-02 272-437 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NEWFOUNDLD PA
2022-02-02 272-463 4XXX5XXX6XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J NICHOLSON PA
2022-02-02 325-352 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J ABILENE TX
2022-02-02 364-219 0XXX1XXX7XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BOWLNGGREN KY
2022-02-02 432-895 0–9 XXXall 10 · 3 holders which blocks → TWILIO INTERNATIONAL, INC. 506J MIDLAND TX
2022-02-02 575-463 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAS CRUCES NM
2022-02-02 657-565 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SANTA ANA CA
2022-02-02 669-690 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H SNJS NORTH CA
2022-02-02 737-318 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BASTROP TX
2022-02-02 762-746 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J COLUMBUS GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.