NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

13 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 724
ONVOY, LLC - PA 10
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 2
NEW CINGULAR WIRELESS PCS, LLC - IL 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
2018-05-22 724-665-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON PA
2018-05-22 724-666-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HICKORY PA
2018-05-22 724-666-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HICKORY PA
2018-05-22 724-666-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HICKORY PA
2018-05-22 724-669-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BENTLEYVL PA
2018-05-22 724-669-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BENTLEYVL PA
2018-05-22 724-673-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCDONALD PA
2018-05-22 724-673-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCDONALD PA
2018-05-22 724-673-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCDONALD PA
2018-05-22 724-676-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOLIVAR PA
2018-05-22 724-676-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOLIVAR PA
2018-05-22 724-687-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARS PA
2018-05-22 724-687-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARS PA
2018-05-22 724-687-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARS PA
2018-05-22 724-721-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YUKON PA
2018-05-22 724-721-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YUKON PA
2018-05-22 724-721-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YUKON PA
2018-05-22 724-723-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 INDIANA PA
2018-05-22 724-737-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCLELANDTN PA
2018-05-22 724-737-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCLELANDTN PA
2018-05-22 724-786-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FREEPORT PA
2018-05-22 724-823-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DONORA PA
2018-05-22 724-823-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DONORA PA
2018-05-22 724-849-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MAMMOTH PA
2018-05-22 724-849-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MAMMOTH PA
2018-05-22 724-849-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MAMMOTH PA
2018-05-22 724-855-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EAU CLAIRE PA
2018-05-22 724-855-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EAU CLAIRE PA
2018-05-22 724-855-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EAU CLAIRE PA
2018-05-22 724-876-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2018-05-22 724-876-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2018-05-22 724-937-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GROVE CITY PA
2018-05-22 724-937-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GROVE CITY PA
2018-05-22 724-937-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GROVE CITY PA
2018-05-22 724-952-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MASONTOWN PA
2018-05-22 724-952-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MASONTOWN PA
2018-05-22 724-985-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TRANSFER PA
2018-05-22 724-985-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TRANSFER PA
2018-05-21 724-595-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2018-05-21 724-595-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2018-05-21 724-595-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2018-05-21 724-788-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALIQUIPPA PA
2018-05-21 724-857-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALIQUIPPA PA
2018-05-21 724-857-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALIQUIPPA PA
2018-05-18 724-603-6XXX 6000–6999Assigned CITIZENS TELECOM SOLUTIONS, LLC - PA 050A CONNELLSVL PA
2018-05-11 724-304-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F NEWKNSNGTN PA
2018-04-27 724-895-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J TARENTUM PA
2018-03-30 724-636-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 SLIPPERYRK PA
2018-03-13 724-982-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J SHARON PA
2018-03-08 724-304-7XXX 7000–7999Assigned AERIAL COMMUNICATIONS, INC. 6701 NEWKNSNGTN 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.