NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 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, all time — NPA 215
NEW CINGULAR WIRELESS PCS, LLC - DC 281
ONVOY, LLC - PA 273
OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 253
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 218
METROPCS, INC. 173
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
2018-10-11 215-857-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDMINSTER PA
2018-10-11 215-857-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDMINSTER PA
2018-10-11 215-857-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDMINSTER PA
2018-10-11 215-857-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDMINSTER PA
2018-08-13 215-936-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2018-08-13 215-936-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2018-07-09 215-201-6XXX 6000–6999Assigned METROPCS, INC. 5562 PHLDLPHZN1 PA
2018-07-09 215-201-7XXX 7000–7999Assigned METROPCS, INC. 5562 PHLDLPHZN1 PA
2018-06-28 215-201-4XXX 4000–4999Assigned NUSO, LLC 551G PHLDLPHZN1 PA
2018-06-08 215-890-0XXX 0000–0999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-1XXX 1000–1999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-2XXX 2000–2999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-3XXX 3000–3999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-5XXX 5000–5999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-7XXX 7000–7999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-8XXX 8000–8999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-06-08 215-890-9XXX 9000–9999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHLDLPHZN1 PA
2018-05-11 215-277-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN34 PA
2018-05-11 215-277-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN34 PA
2018-05-11 215-277-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN34 PA
2018-05-11 215-449-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN38 PA
2018-05-11 215-449-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN38 PA
2018-05-11 215-544-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN37 PA
2018-05-11 215-544-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN37 PA
2018-05-11 215-544-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN37 PA
2018-05-11 215-642-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN41 PA
2018-05-11 215-799-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SOUDERTON PA
2018-05-11 215-799-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SOUDERTON PA
2018-05-11 215-799-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SOUDERTON PA
2018-05-04 215-201-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN1 PA
2018-04-12 215-201-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2018-04-12 215-201-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2018-04-12 215-201-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN1 PA
2018-03-08 215-201-0XXX 0000–0999Assigned METROPCS, INC. 5562 PHLDLPHZN1 PA
2018-02-23 215-532-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2018-02-23 215-532-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2018-02-16 215-240-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-16 215-316-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-16 215-402-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E PHPHSBZN32 PA
2018-02-09 215-201-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHLDLPHZN1 PA
2018-02-08 215-452-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-08 215-596-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-08 215-729-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-08 215-730-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-08 215-823-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2018-02-01 215-201-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHLDLPHZN1 PA
2017-12-28 215-774-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E PHPHSBZN32 PA
2017-11-30 215-907-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN39 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.