NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 570
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7
ONVOY, LLC - 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
2009-03-12 570-458-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MILLVILLE PA
2009-03-12 570-481-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CRESCO PA
2009-03-12 570-503-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAMLIN PA
2009-03-12 570-541-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MIDDLEBURG PA
2009-03-12 570-563-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DALTON PA
2009-03-12 570-634-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROOKSIDE PA
2009-03-12 570-639-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HARVEYS LK PA
2009-03-12 570-658-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEAVER SPG PA
2009-03-12 570-725-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LOGANTON PA
2009-03-12 570-729-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEACH LAKE PA
2009-03-12 570-739-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRIEDENSBG PA
2009-03-12 570-750-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LAPORTE PA
2009-03-12 570-753-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVIS PA
2009-03-12 570-754-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AUBURN PA
2009-03-12 570-783-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MAHANOY CY PA
2009-03-12 570-794-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRACKVILLE PA
2009-03-12 570-805-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LANSFORD PA
2009-03-12 570-806-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLIFFORD PA
2009-03-12 570-818-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MANTZVILLE PA
2009-03-12 570-833-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MEHOOPANY PA
2009-03-12 570-864-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HUNTIGTNML PA
2009-03-12 570-865-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 JERSEYSHOR PA
2009-03-12 570-869-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LACEYVILLE PA
2009-03-12 570-929-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCADOO PA
2009-03-12 570-932-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
2009-03-12 570-932-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
2009-03-12 570-933-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ASHLAND PA
2009-03-12 570-939-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEWISBURG PA
2009-03-12 570-943-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCKEANSBG PA
2009-03-12 570-945-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FACTORYVL PA
2009-03-12 570-960-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FORESTCITY PA
2009-03-11 570-540-5XXX 5000–5999Assigned OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PITTSTON PA
2009-03-05 570-238-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 MILTON PA
2009-03-05 570-861-3XXX 3000–3999Assigned CTSI, INC. - PA 7513 HAZLETON PA
2009-03-05 570-899-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILKSBARRE PA
2009-03-05 570-899-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILKSBARRE PA
2009-03-02 570-809-9XXX 9000–9999Assigned YMAX COMMUNICATIONS CORP. - PA 283E SUNBURY PA
2009-02-23 570-254-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J CHAPMAN LK PA
2009-02-23 570-299-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PITTSTON PA
2009-02-23 570-521-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J JERMYN PA
2009-02-23 570-843-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MOSCOW PA
2009-02-20 570-692-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILLIAMSPT PA
2009-02-06 570-860-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K HALLSTEAD PA
2009-02-06 570-975-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SUNBURY PA
2009-02-02 570-624-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSVILLE PA
2009-01-15 570-871-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J SCRANTON PA
2009-01-15 570-933-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ASHLAND PA
2009-01-15 570-939-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISBURG PA
2009-01-14 570-377-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LOCK HAVEN PA
2009-01-07 570-789-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 POTTSVILLE 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.