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
2018-09-06 570-217-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MIFFLINBG PA
2018-08-28 570-849-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F DANVILLE PA
2018-08-23 570-886-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E SAYRE PA
2018-08-23 570-886-9XXX 9000–9999Assigned ONVOY, LLC - PA 547E SAYRE PA
2018-08-23 570-933-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ASHLAND PA
2018-08-17 570-443-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E WHITEHAVEN PA
2018-08-17 570-669-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E NESQUHONNG PA
2018-08-17 570-902-7XXX 7000–7999Assigned ONVOY, LLC - PA 547E NANTICOKE PA
2018-08-13 570-559-5XXX 5000–5999Assigned ONVOY, LLC - PA 547E SHOHOLA PA
2018-08-13 570-776-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E MILFORD PA
2018-08-09 570-331-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - DC 4036 KINGSTON PA
2018-07-26 570-676-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F NEWFOUNDLD PA
2018-07-25 570-533-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 MONTROSE PA
2018-07-25 570-732-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 JIM THORPE PA
2018-07-11 570-206-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 MIDLEBYCTR PA
2018-07-03 570-871-9XXX 9000–9999Assigned NUSO, LLC 551G SCRANTON PA
2018-06-28 570-273-0XXX 0000–0999Assigned ONVOY, LLC - PA 547E NESQUHONNG PA
2018-06-25 570-379-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7315 WAPWALLOPN PA
2018-06-20 570-537-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 MILLERTON PA
2018-06-20 570-549-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ROSEVILLE PA
2018-06-20 570-596-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - PA 4007 BENTLEYCRK PA
2018-06-20 570-914-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2018-06-14 570-863-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SUNBURY PA
2018-06-14 570-948-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WELLSBORO PA
2018-06-14 570-948-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WELLSBORO PA
2018-06-14 570-948-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WELLSBORO PA
2018-05-25 570-984-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F MINERSVL PA
2018-05-24 570-904-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SCRANTON PA
2018-05-23 570-715-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 MOUNTANTOP PA
2018-05-21 570-201-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-05-21 570-201-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-05-21 570-201-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RUSH PA
2018-05-21 570-303-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-05-21 570-303-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-05-21 570-303-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 THOMPSON PA
2018-05-21 570-361-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SUSQUHANNA PA
2018-05-21 570-361-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SUSQUHANNA PA
2018-05-21 570-361-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SUSQUHANNA PA
2018-05-21 570-381-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SO CANAAN PA
2018-05-21 570-381-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SO CANAAN PA
2018-05-21 570-381-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SO CANAAN PA
2018-05-21 570-485-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TOWANDA PA
2018-05-21 570-485-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TOWANDA PA
2018-05-21 570-530-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ROME PA
2018-05-21 570-530-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ROME PA
2018-05-21 570-530-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ROME PA
2018-05-21 570-548-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-05-21 570-548-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-05-21 570-548-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ST JOSEPH PA
2018-05-21 570-564-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIOGA 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.