NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2026-09-18 223-288-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BLAIN PA
2026-09-18 223-353-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SHELLSVL PA
2026-09-14 223-358-6XXX 6000–6999Assigned HD CARRIER LLC 321J CHAMBERSBG PA
2026-09-10 223-351-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E MECHANCSBG PA
2026-09-10 223-364-2XXX 2000–2999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 ELIZABTHTN PA
2026-09-10 223-371-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E SHIPPENSBG PA
2026-09-09 223-293-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 FAWN GROVE PA
2026-09-08 223-358-1XXX 1000–1999Assigned BOOST SUBSCRIBERCO L.L.C. 490J CHAMBERSBG PA
2026-09-02 223-384-5XXX 5000–5999Assigned BOOST SUBSCRIBERCO L.L.C. 490J YORK PA
2026-09-01 223-587-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
2026-09-01 223-587-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN1 PA
2026-08-27 223-296-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MTHOLLYSPG PA
2026-08-27 223-387-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E LANCASTER PA
2026-08-26 223-368-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISTOWN PA
2026-08-26 223-723-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LOGANVILLE PA
2026-08-25 223-344-7XXX 7000–7999Assigned AHOI LLC 883K DAUPHIN PA
2026-08-25 223-373-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2026-08-25 223-373-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2026-08-25 223-374-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2026-08-25 223-380-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 HARISBGZN1 PA
2026-08-25 223-387-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2026-08-20 223-352-7XXX 7000–7999Assigned OPENTACT INC. 824J ANNVILLE PA
2026-08-20 223-382-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F HARISBGZN1 PA
2026-08-19 223-384-2XXX 2000–2999Assigned ONVOY, LLC - PA 547E YORK PA
2026-08-18 223-242-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J MARIETTA PA
2026-08-12 223-393-0XXX 0000–0999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEBANON PA
2026-07-22 223-358-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CHAMBERSBG PA
2026-07-22 223-364-9XXX 9000–9999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 ELIZABTHTN PA
2026-07-22 223-370-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 YORK PA
2026-07-20 223-387-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANCASTER PA
2026-07-20 223-395-1XXX 1000–1999Assigned WIDE VOICE, LLC - PA 218H HARISBGZN1 PA
2026-07-20 223-395-2XXX 2000–2999Assigned WIDE VOICE, LLC - PA 218H HARISBGZN1 PA
2026-07-16 223-290-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BIGLERVL PA
2026-07-16 223-389-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CARLISLE PA
2026-07-09 223-391-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F EPHRATA PA
2026-07-08 223-320-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 GRATZ PA
2026-07-06 223-880-1XXX 1000–1999Assigned 8X8, INC. 193E HARISBGZN1 PA
2026-06-24 223-394-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN2 PA
2026-06-23 223-351-5XXX 5000–5999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E MECHANCSBG PA
2026-06-18 223-367-5XXX 5000–5999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEBANON PA
2026-06-04 223-394-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARISBGZN2 PA
2026-05-22 223-747-5XXX 5000–5999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E EASTBERLIN PA
2026-05-15 223-383-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 HARISBGZN1 PA
2026-05-14 223-233-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SPRING GRV PA
2026-05-14 223-275-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WRIGHTSVL PA
2026-05-14 223-786-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 STEWARTSTN PA
2026-05-13 223-393-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LEBANON PA
2026-05-11 223-387-6XXX 6000–6999Assigned HD CARRIER LLC 321J LANCASTER PA
2026-05-11 223-387-7XXX 7000–7999Assigned HD CARRIER LLC 321J LANCASTER PA
2026-05-06 223-230-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E NEW OXFORD PA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.