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
2013-05-14 570-948-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WELLSBORO PA
2013-05-13 570-600-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E MIDDLEBURG PA
2013-05-13 570-900-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E ASHLAND PA
2013-05-08 570-399-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J MINERSVL PA
2013-04-29 570-666-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WILLIAMSPT PA
2013-04-25 570-221-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 ELYSBURG PA
2013-04-23 570-703-5XXX 5000–5999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-23 570-703-6XXX 6000–6999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-23 570-703-7XXX 7000–7999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-23 570-703-8XXX 8000–8999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-22 570-569-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J PITTSTON PA
2013-04-22 570-770-0XXX 0000–0999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-22 570-770-3XXX 3000–3999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-22 570-770-4XXX 4000–4999Assigned CTSI, INC. - PA 7513 SCRANTON PA
2013-04-05 570-616-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HONESDALE PA
2013-03-29 570-800-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E SCRANTON PA
2013-03-28 570-728-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 POTTSVILLE PA
2013-03-28 570-728-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 POTTSVILLE PA
2013-03-11 570-914-1XXX 1000–1999Assigned NUSO, LLC 551G SCRANTON PA
2013-03-04 570-729-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 BEACH LAKE PA
2013-02-28 570-260-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F ST CLAIR PA
2013-02-28 570-554-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MT CARMEL PA
2013-02-25 570-492-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SUNBURY PA
2013-02-25 570-664-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 STROUDSBG PA
2013-02-25 570-664-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 STROUDSBG PA
2013-02-25 570-665-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 TUNKHANNCK PA
2013-02-22 570-359-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 CNYNGHDRMS PA
2013-02-19 570-526-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 FREELAND PA
2013-02-08 570-880-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F SCRANTON PA
2013-02-04 570-634-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F BROOKSIDE PA
2013-02-01 570-846-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F WILKSBARRE PA
2013-01-22 570-534-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F STROUDSBG PA
2013-01-14 570-277-9XXX 9000–9999Assigned IDT AMERICA, CORP. - PA 213C NEWPHLDLPH PA
2013-01-14 570-316-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BLOOMSBURG PA
2013-01-14 570-810-0XXX 0000–0999Assigned IDT AMERICA, CORP. - PA 213C TAMAQUA PA
2013-01-09 570-316-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BLOOMSBURG PA
2013-01-09 570-502-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LOCK HAVEN PA
2013-01-09 570-507-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SCRANTON PA
2013-01-07 570-710-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAZLETON PA
2012-12-26 570-846-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 WILKSBARRE PA
2012-12-21 570-599-3XXX 3000–3999Assigned IDT AMERICA, CORP. - PA 213C HAZLETON PA
2012-12-20 570-415-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 SUNBURY PA
2012-12-19 570-710-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 HAZLETON PA
2012-12-19 570-805-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 LANSFORD PA
2012-12-17 570-534-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 STROUDSBG PA
2012-12-11 570-580-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT POCONO PA
2012-12-11 570-701-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 NORTHUBRLD PA
2012-12-06 570-397-3XXX 3000–3999Assigned ONVOY, LLC - PA 547E JERMYN PA
2012-12-06 570-397-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 JERMYN PA
2012-11-26 570-536-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CARBONDALE 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.