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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2019-03-22 223-900-0XXX 0000–0999Assigned TERRA NOVA TELECOM INC. 145J HERSHEY PA
2019-03-21 223-218-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 HENSEL PA
2019-03-21 223-219-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 RAWLINSVL PA
2019-03-21 223-837-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EWATERFORD PA
2019-03-21 223-848-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F YORK PA
2019-03-21 223-924-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FAIRFIELD PA
2019-03-13 223-222-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PALMYRA PA
2019-03-13 223-222-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PALMYRA PA
2019-03-13 223-222-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PALMYRA PA
2019-03-13 223-222-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PALMYRA PA
2019-03-13 223-222-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PALMYRA PA
2019-03-13 223-222-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PALMYRA PA
2019-03-13 223-848-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YORK PA
2019-03-13 223-999-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHELLSVL PA
2019-03-13 223-999-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHELLSVL PA
2019-03-13 223-999-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHELLSVL PA
2019-03-07 223-216-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LANDISVL PA
2019-03-07 223-216-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LANDISVL PA
2019-03-06 223-216-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LANDISVL PA
2019-02-21 223-213-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 DILLSBURG PA
2019-01-29 223-666-6XXX 6000–6999Assigned FRACTEL, LLC 965H HARISBGZN1 PA
2018-12-12 223-215-1XXX 1000–1999Assigned METROPCS, INC. 5562 MOUNT JOY PA
2018-12-12 223-216-9XXX 9000–9999Assigned METROPCS, INC. 5562 LANDISVL PA
2018-12-11 223-205-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARION PA
2018-12-11 223-205-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MARION PA
2018-12-11 223-333-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LEBANON PA
2018-12-10 223-212-8XXX 8000–8999Assigned METROPCS, INC. 5562 CARLISLE PA
2018-12-10 223-308-0XXX 0000–0999Assigned METROPCS, INC. 5562 MILLERSVL PA
2018-12-10 223-777-9XXX 9000–9999Assigned METROPCS, INC. 5562 STRASBURG PA
2018-11-19 223-444-3XXX 3000–3999Assigned VONAGE AMERICA LLC 197D LANCASTER PA
2018-11-19 223-444-5XXX 5000–5999Assigned VONAGE AMERICA LLC 197D LANCASTER PA
2018-11-19 223-444-6XXX 6000–6999Assigned VONAGE AMERICA LLC 197D LANCASTER PA
2018-11-05 223-747-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E EASTBERLIN PA
2018-11-05 223-747-9XXX 9000–9999Assigned ONVOY, LLC - PA 547E EASTBERLIN PA
2018-10-30 223-205-1XXX 1000–1999Assigned ONVOY, LLC - PA 547E MARION PA
2018-10-30 223-213-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E DILLSBURG PA
2018-10-30 223-214-9XXX 9000–9999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E FRYSTOWN PA
2018-10-22 223-212-2XXX 2000–2999Assigned ONVOY, LLC - PA 547E CARLISLE PA
2018-10-22 223-212-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E CARLISLE PA
2018-10-22 223-212-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E CARLISLE PA
2018-10-22 223-212-6XXX 6000–6999Assigned ONVOY, LLC - PA 547E CARLISLE PA
2018-10-22 223-212-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E CARLISLE PA
2018-10-22 223-848-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2018-10-18 223-848-4XXX 4000–4999Assigned ONVOY, LLC - PA 547E YORK PA
2018-10-18 223-848-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E YORK PA
2018-10-17 223-200-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YORK PA
2018-10-17 223-200-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YORK PA
2018-10-17 223-200-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YORK PA
2018-10-17 223-200-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YORK PA
2018-10-17 223-200-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YORK 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.