NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

3 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 610
ONVOY, LLC - PA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 1
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
2010-06-17 610-550-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN22 PA
2010-06-17 610-550-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN22 PA
2010-06-17 610-550-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN22 PA
2010-06-17 610-710-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN26 PA
2010-06-16 610-732-7XXX 7000–7999Assigned METROPCS, INC. 5562 W CHESTER PA
2010-06-10 610-729-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN31 PA
2010-06-01 610-333-0XXX 0000–0999Assigned METROPCS, INC. 5562 EASTON PA
2010-06-01 610-333-2XXX 2000–2999Assigned METROPCS, INC. 5562 EASTON PA
2010-06-01 610-333-3XXX 3000–3999Assigned METROPCS, INC. 5562 EASTON PA
2010-05-26 610-915-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F PHPHSBZN14 PA
2010-05-20 610-406-4XXX 4000–4999Assigned WINDSTREAM D & E SYSTEMS, INC. - PA 4114 READING PA
2010-05-11 610-990-9XXX 9000–9999Assigned METROPCS, INC. 5562 PHPHSBZN11 PA
2010-04-30 610-849-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BETHLEHEM PA
2010-04-20 610-756-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 KEMPTON PA
2010-04-20 610-786-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN28 PA
2010-04-14 610-245-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - PA 283E PHPHSBZN11 PA
2010-04-14 610-990-3XXX 3000–3999Assigned YMAX COMMUNICATIONS CORP. - PA 283E PHPHSBZN11 PA
2010-03-30 610-345-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E WEST GROVE PA
2010-03-30 610-346-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E SPRINGTOWN PA
2010-03-30 610-347-7XXX 7000–7999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E UNIONVILLE PA
2010-03-30 610-749-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E RIEGELSVL PA
2010-03-30 610-978-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E SLATINGTON PA
2010-03-30 610-982-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E UPBLCKEDDY PA
2010-03-12 610-557-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN22 PA
2010-03-09 610-456-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 HELLERTOWN PA
2010-02-24 610-502-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E NORTHAMPTN PA
2010-02-24 610-726-7XXX 7000–7999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHPHSBZN24 PA
2010-02-24 610-922-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E PHPHSBZN25 PA
2010-02-24 610-998-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E OXFORD PA
2010-02-22 610-243-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E LENAPE PA
2010-02-22 610-274-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E LANDENBERG PA
2010-02-22 610-298-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E NEWTRIPOLI PA
2010-02-22 610-486-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E MORTONVL PA
2010-02-22 610-614-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E NAZARETH PA
2010-02-22 610-708-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E MENDENHALL PA
2010-02-17 610-297-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J BETHLEHEM PA
2010-02-17 610-814-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 BETHLEHEM PA
2010-02-10 610-255-6XXX 6000–6999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E KEMBLESVL PA
2010-02-10 610-426-4XXX 4000–4999Assigned BLOCK LINE SYSTEMS, LLC - PA 784E KUTZTOWN PA
2010-02-08 610-679-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F COATESVL PA
2010-02-01 610-983-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F PHOENIXVL PA
2010-01-07 610-233-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2010-01-07 610-233-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2010-01-07 610-233-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2010-01-07 610-233-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2009-12-29 610-990-2XXX 2000–2999Assigned METROPCS, INC. 5562 PHPHSBZN11 PA
2009-12-22 610-618-2XXX 2000–2999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 KUTZTOWN PA
2009-12-07 610-930-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN30 PA
2009-11-23 610-998-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 OXFORD PA
2009-11-12 610-714-1XXX 1000–1999Assigned D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 LEHIGHTON 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.