NumberResearch Membership · Data 09/28/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19
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
2019-09-13 480-594 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2019-09-13 480-955 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H PHOENIX AZ
2019-09-13 581-455 not yet reported which blocks → Videotron Ltd. 8306 La Guadeloupe —
2019-09-13 581-458 not yet reported which blocks → Videotron Ltd. 8306 St-Methode-de-Frontenac —
2019-09-13 602-877 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PHOENIX AZ
2019-09-13 608-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H MADISON WI
2019-09-13 619-613 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LA MESA CA
2019-09-13 623-600 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H PHOENIX AZ
2019-09-13 631-906 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 DEER PARK NY
2019-09-13 669-298 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SARATOGA CA
2019-09-13 707-804 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ST HELENA CA
2019-09-13 816-610 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 KANSASCITY MO
2019-09-13 825-503 not yet reported which blocks → Iristel Inc. 154E Hardisty —
2019-09-13 825-504 not yet reported which blocks → Iristel Inc. 154E Hay Lakes —
2019-09-13 859-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H LEXINGTON KY
2019-09-13 928-356 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H PRESCOTT AZ
2019-09-13 929-527 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN09 NY
2019-09-13 929-528 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN11 NY
2019-09-13 929-543 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN11 NY
2019-09-13 937-759 0–9 XXXall 10 · 4 holders which blocks → EXIANT COMMUNICATIONS LLC 114J DAYTON OH
2019-09-13 939-301 0–9 XXXwhole prefix which blocks → PUERTO RICO TELCO DBA CLARO PUERTO RICO 4823 BAYAMONNOR PR
2019-09-12 202-925 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2019-09-12 210-915 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H SANANTONIO TX
2019-09-12 218-800 0XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H DULUTH MN
2019-09-12 218-900 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CLOQUET MN
2019-09-12 229-900 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H ALBANY GA
2019-09-12 240-697 0–9 XXXall 10 · 3 holders which blocks → CORETEL MARYLAND, INC. - MD 469J MECHANCSVL MD
2019-09-12 240-829 0–9 XXXall 10 · 6 holders which blocks → CORETEL MARYLAND, INC. - MD 469J EMMITSBURG MD
2019-09-12 254-648 not yet reported which blocks → SHELCOMM 0051 RANGER TX
2019-09-12 320-800 0XXX6XXX7XXX8XXX · 2 holders which blocks → FRACTEL, LLC 965H ST CLOUD MN
2019-09-12 320-900 0XXX1XXX2XXX4XXX6XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H CLEARWATER MN
2019-09-12 413-321 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 WARE MA
2019-09-12 469-694 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H DALLAS TX
2019-09-12 469-696 not yet reported which blocks → SHELCOMM 0051 MCKINNEY TX
2019-09-12 469-738 not yet reported which blocks → SHELCOMM 0051 IRVING TX
2019-09-12 475-258 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NORWALK CT
2019-09-12 478-300 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H COCHRAN GA
2019-09-12 478-356 7XXX9XXX which blocks → FRACTEL, LLC 965H CEDARGROVE GA
2019-09-12 478-500 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H EASTMAN GA
2019-09-12 478-600 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H MACON GA
2019-09-12 517-800 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H JACKSON MI
2019-09-12 571-464 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 HERNDON VA
2019-09-12 581-454 not yet reported which blocks → Videotron Ltd. 8306 Disraeli —
2019-09-12 641-441 1XXX2XXX4XXX · 2 holders which blocks → GREENWAY COMMUNICATIONS L.L.C. - IA 860F KLEMME IA
2019-09-12 667-353 0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → CORETEL MARYLAND, INC. - MD 469J CARDIFF MD
2019-09-12 667-853 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CORETEL MARYLAND, INC. - MD 469J POCOMOKE MD
2019-09-12 774-372 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MANSFIELD MA
2019-09-12 786-710 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2019-09-12 786-721 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2019-09-12 857-423 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 BROOKLINE MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.