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
2016-03-24 647-245 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Toronto —
2016-03-24 651-279 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-03-24 717-716 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MOUNTVILLE PA
2016-03-24 765-375 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - IN 097D OXFORD IN
2016-03-24 778-589 not yet reported which blocks → Primus Telecommunications Canada Inc. 201A Vancouver —
2016-03-24 779-287 0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC 224C UNION IL
2016-03-24 878-378 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E WESTNEWTON PA
2016-03-24 878-847 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E NEWKNSNGTN PA
2016-03-24 878-870 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E FARMINGTON PA
2016-03-23 214-817 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2016-03-23 216-716 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - OH 7532 CLEVELAND OH
2016-03-23 318-668 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - LA 749E OAKDALE LA
2016-03-23 343-789 not yet reported which blocks → Distributel 082E Alfred —
2016-03-23 346-787 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - TX 903C LA PORTE TX
2016-03-23 361-330 0XXX1XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WOODSBORO TX
2016-03-23 407-885 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 ORLANDO FL
2016-03-23 470-298 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E ATLANTA GA
2016-03-23 509-596 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 CLARKSTON WA
2016-03-23 531-208 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NE 549E ATKINSON NE
2016-03-23 531-300 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - NE 549E CRESTON NE
2016-03-23 586-571 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C CENTERLINE MI
2016-03-23 587-514 not yet reported which blocks → Distributel 081E Champion —
2016-03-23 587-515 not yet reported which blocks → Distributel 081E Cochrane —
2016-03-23 587-517 not yet reported which blocks → Distributel 081E Cremona —
2016-03-23 587-518 not yet reported which blocks → Distributel 081E Crossfield —
2016-03-23 587-519 not yet reported which blocks → Distributel 081E Exshaw —
2016-03-23 587-527 not yet reported which blocks → Distributel 081E Gleichen —
2016-03-23 587-528 not yet reported which blocks → Distributel 081E High River —
2016-03-23 587-529 not yet reported which blocks → Distributel 081E Hussar —
2016-03-23 587-530 not yet reported which blocks → Distributel 081E Irricana —
2016-03-23 587-531 not yet reported which blocks → Distributel 081E Kananaskis —
2016-03-23 587-546 not yet reported which blocks → Distributel 081E Lake Louise —
2016-03-23 587-547 not yet reported which blocks → Distributel 081E Langdon —
2016-03-23 587-548 not yet reported which blocks → Distributel 081E Lomond —
2016-03-23 587-549 not yet reported which blocks → Distributel 081E Longview —
2016-03-23 587-550 not yet reported which blocks → Distributel 081E Milo —
2016-03-23 587-558 not yet reported which blocks → Distributel 081E Morley —
2016-03-23 587-559 not yet reported which blocks → Distributel 081E Nanton —
2016-03-23 587-560 not yet reported which blocks → Distributel 081E Okotoks —
2016-03-23 587-561 not yet reported which blocks → Distributel 081E Rockyford —
2016-03-23 587-562 not yet reported which blocks → Distributel 081E Standard —
2016-03-23 587-563 not yet reported which blocks → Distributel 081E Stavely —
2016-03-23 587-564 not yet reported which blocks → Distributel 081E Strathmore —
2016-03-23 587-565 not yet reported which blocks → Distributel 081E Turner Valley —
2016-03-23 587-567 not yet reported which blocks → Distributel 081E Vulcan —
2016-03-23 608-384 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC WI 7216 MINERAL PT WI
2016-03-23 682-400 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - TX 903C MANSFIELD TX
2016-03-23 774-387 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MA 892D BLACKSTONE MA
2016-03-23 774-497 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - MA 892D NO SWANSEA MA
2016-03-23 779-223 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC 224C ONARGA IL

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.