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
2016-01-08 815-755 0XXX1XXX4XXX5XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC 224C SENECA IL
2016-01-08 878-205 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - PA 547E CONNELLSVL PA
2016-01-07 306-800 not yet reported which blocks → Iristel Inc. 154E Biggar —
2016-01-07 365-200 not yet reported which blocks → Distributel 082E Caledon East —
2016-01-07 365-201 not yet reported which blocks → Distributel 082E Castlemore —
2016-01-07 365-202 not yet reported which blocks → Distributel 082E Port Credit —
2016-01-07 365-203 not yet reported which blocks → Distributel 082E Snelgrove —
2016-01-07 365-204 not yet reported which blocks → Distributel 082E Victoria —
2016-01-07 484-507 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FLEETWOOD PA
2016-01-07 575-215 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW MEXICO, LLC - NM 377H ANTHONY NM
2016-01-07 579-365 not yet reported which blocks → Videotron Ltd. 8306 Granby —
2016-01-07 587-602 not yet reported which blocks → Iristel Inc. 154E Airdrie —
2016-01-07 636-215 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 MAXVILLE MO
2016-01-07 709-401 not yet reported which blocks → Iristel Inc. 154E Torbay —
2016-01-07 778-763 not yet reported which blocks → Iristel Inc. 154E Prince George —
2016-01-06 240-657 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 7228 FROSTBURG MD
2016-01-06 360-745 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9638 PORTLUDLOW WA
2016-01-06 469-562 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 PLANO TX
2016-01-06 612-469 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2016-01-06 647-671 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 647-673 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 647-674 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 647-675 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 647-676 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 647-679 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 647-685 not yet reported which blocks → Fido Solutions Inc. 5643 Toronto —
2016-01-06 717-678 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2016-01-05 262-202 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN2 WI
2016-01-05 262-747 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - WI 225C UNIONGROVE WI
2016-01-05 270-560 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KY 896E OAK GROVE KY
2016-01-05 346-252 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 HSTNSUBURB TX
2016-01-05 424-452 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C REDONDO CA
2016-01-05 475-283 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CT 6388 NORWALK CT
2016-01-05 478-707 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - GA 067D SANDERSVL GA
2016-01-05 567-804 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TIFFIN OH
2016-01-05 585-774 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C ALBION NY
2016-01-05 607-302 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 ELMIRA NY
2016-01-05 619-763 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CHULAVISTA CA
2016-01-05 636-409 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K OFALLON MO
2016-01-05 636-747 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MO 093F PACIFIC MO
2016-01-05 660-717 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MO 093F MARSHALL MO
2016-01-05 774-775 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → ONVOY, LLC - MA 892D WAREHAM MA
2016-01-05 786-843 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2016-01-05 805-209 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → ONVOY, LLC - CA 649C MOORPARK CA
2016-01-05 805-834 0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OXNARD CA
2016-01-05 864-727 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H COWPENS SC
2016-01-05 910-636 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF NORTH CAROLINA, LLC - NC 350F CAROLINBCH NC
2016-01-05 914-704 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 WSCHSTZN02 NY
2016-01-05 920-880 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F ALGOMA WI
2016-01-05 929-213 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN03 NY

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.