NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
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
2020-12-21 256-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E HUNTSVILLE AL
2020-12-21 302-557 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E OCEAN VIEW DE
2020-12-21 302-665 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E FREDERICA DE
2020-12-21 302-667 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E REHOBOTH DE
2020-12-21 302-676 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - DE 969E MIDDLETOWN DE
2020-12-21 302-878 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - DE 969E MILLSBORO DE
2020-12-21 302-889 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E DAGSBORO DE
2020-12-21 307-306 0–9 XXXall 10 · 6 holders which blocks → STRATUS NETWORKS 495J DOUGLAS WY
2020-12-21 319-381 0–9 XXXall 10 · 6 holders which blocks → STRATUS NETWORKS 495J IOWA CITY IA
2020-12-21 332-910 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2020-12-21 334-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - AL 604E MONTGOMERY AL
2020-12-21 365-426 not yet reported which blocks → Bell Mobility 6574 Hamilton —
2020-12-21 425-520 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2020-12-21 430-946 0XXX1XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H HOWE TX
2020-12-21 431-871 not yet reported which blocks → Westman Media Cooperative Ltd 120F Notre Dame de Lourdes —
2020-12-21 442-899 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H WARNER SPG CA
2020-12-21 470-750 0–9 XXXwhole prefix which blocks → ONVOY, LLC - GA 067D ATLANTA NW GA
2020-12-21 478-307 0XXX1XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → STRATUS NETWORKS 495J SWAINSBORO GA
2020-12-21 478-332 0–9 XXXall 10 · 5 holders which blocks → STRATUS NETWORKS 495J MACON GA
2020-12-21 502-520 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY 6500 SHELBYVL KY
2020-12-21 509-513 1XXX2XXX7XXX · 2 holders which blocks → ONVOY, LLC - WA 483E NORTHPORT WA
2020-12-21 513-790 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OH 464C HAMILTON OH
2020-12-21 520-524 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AZ 630E TUCSON AZ
2020-12-21 561-579 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2020-12-21 561-710 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C DELRAY BCH FL
2020-12-21 607-940 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC- NY 384C BINGHAMTON NY
2020-12-21 608-453 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - WI 225C SUNPRAIRIE WI
2020-12-21 608-454 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - WI 225C OREGON WI
2020-12-21 608-456 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - WI 225C ORFORDVL WI
2020-12-21 608-594 3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → ONVOY, LLC - WI 225C PLAIN WI
2020-12-21 608-694 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - WI 225C COTTAGEGRV WI
2020-12-21 609-210 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ALLENTOWN NJ
2020-12-21 659-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E BIRMINGHAM AL
2020-12-21 680-910 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C SYRACUSE NY
2020-12-21 715-624 0XXX2XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → ONVOY, LLC - WI 225C HAYWARD WI
2020-12-21 716-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC- NY 384C BUFFALO NY
2020-12-21 762-322 0XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - GA 067D UNIONPOINT GA
2020-12-21 762-335 1XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → ONVOY, LLC - GA 067D MAYSVILLE GA
2020-12-21 762-344 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D DALTON GA
2020-12-21 762-366 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - GA 067D MADISON GA
2020-12-21 762-778 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D COMMERCE GA
2020-12-21 762-788 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - GA 067D ILA GA
2020-12-21 772-310 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PTST LUCIE FL
2020-12-21 772-510 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C STUART FL
2020-12-21 772-610 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C VERO BEACH FL
2020-12-21 772-710 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C FORTPIERCE FL
2020-12-21 774-453 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BROCKTON MA
2020-12-21 786-550 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C HOMESTEAD FL
2020-12-21 786-850 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C NORTH DADE FL
2020-12-21 786-904 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PERRINE FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.