NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 223
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 4
ONVOY, LLC - PA 3
NEW CINGULAR WIRELESS PCS, LLC - DC 3
BOOST SUBSCRIBERCO L.L.C. 2
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2023-12-20 223-329-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E FRYSTOWN PA
2023-12-20 223-339-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E CARLISLE PA
2023-12-20 223-346-2XXX 2000–2999Assigned ONVOY, LLC - PA 547E LANCASTER PA
2023-12-20 223-351-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E MECHANCSBG PA
2023-12-20 223-351-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E MECHANCSBG PA
2023-12-20 223-352-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E ANNVILLE PA
2023-12-20 223-353-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E SHELLSVL PA
2023-12-18 223-350-8XXX 8000–8999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 GETTYSBURG PA
2023-12-18 223-350-9XXX 9000–9999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 GETTYSBURG PA
2023-12-15 223-277-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J BELLEVILLE PA
2023-12-15 223-326-3XXX 3000–3999Assigned BOOST SUBSCRIBERCO L.L.C. 490J WAYNESBORO PA
2023-12-15 223-432-6XXX 6000–6999Assigned TELNYX LLC 073H FAYETTEVL PA
2023-11-30 223-347-8XXX 8000–8999Assigned TELNYX LLC 073H LEBANON PA
2023-11-29 223-339-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CARLISLE PA
2023-11-29 223-386-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CHAMBERSBG PA
2023-11-16 223-306-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2023-11-16 223-306-5XXX 5000–5999Assigned NUSO, LLC 732J YORK PA
2023-11-16 223-306-6XXX 6000–6999Assigned NUSO, LLC 732J YORK PA
2023-11-14 223-346-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2023-11-14 223-346-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2023-11-13 223-267-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HANOVER PA
2023-11-13 223-347-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LEBANON PA
2023-11-09 223-349-8XXX 8000–8999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 MOUNT JOY PA
2023-11-09 223-349-9XXX 9000–9999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 MOUNT JOY PA
2023-11-08 223-347-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D LEBANON PA
2023-11-07 223-316-7XXX 7000–7999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEBANON PA
2023-11-07 223-347-9XXX 9000–9999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEBANON PA
2023-11-02 223-316-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F LEBANON PA
2023-11-01 223-329-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E FRYSTOWN PA
2023-11-01 223-342-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-11-01 223-342-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 HERSHEY PA
2023-10-31 223-341-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANDISVL PA
2023-10-27 223-317-3XXX 3000–3999Assigned TWILIO INTERNATIONAL, INC. 506J MANCHESTER PA
2023-10-18 223-340-3XXX 3000–3999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-18 223-340-4XXX 4000–4999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-18 223-340-5XXX 5000–5999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-18 223-340-6XXX 6000–6999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-18 223-340-7XXX 7000–7999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-18 223-340-8XXX 8000–8999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-18 223-340-9XXX 9000–9999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 COLUMBIA PA
2023-10-11 223-329-0XXX 0000–0999Assigned TELNYX LLC 073H FRYSTOWN PA
2023-10-10 223-307-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.