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
2019-03-07 724-789-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONOQNSSNG PA
2019-03-07 724-835-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HERMINIE PA
2019-03-07 724-867-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EMLENTON PA
2019-03-07 724-992-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GROVE CITY PA
2019-03-06 724-248-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLACK LICK PA
2019-03-06 724-254-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLYMER PA
2019-03-06 724-302-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - PA 002F ALIQUIPPA PA
2019-03-06 724-338-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CANONSBURG PA
2019-03-06 724-338-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CANONSBURG PA
2019-03-06 724-364-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROWNSVL PA
2019-03-06 724-566-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLAYSVILLE PA
2019-03-06 724-663-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLAYSVILLE PA
2019-03-06 724-676-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOLIVAR PA
2019-03-06 724-753-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BRUIN PA
2019-03-06 724-896-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BUFFALO PA
2019-03-06 724-947-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BURGETTSTN PA
2019-03-06 724-947-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BURGETTSTN PA
2019-03-05 724-242-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2019-03-05 724-268-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON PA
2019-03-05 724-268-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON PA
2019-03-05 724-268-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON PA
2019-03-05 724-488-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2019-03-05 724-488-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2019-03-05 724-595-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2019-03-05 724-595-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2019-03-05 724-595-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2019-03-05 724-644-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVELLA PA
2019-03-05 724-697-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVONMORE PA
2019-03-05 724-697-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVONMORE PA
2019-03-05 724-876-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2019-03-05 724-876-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2019-03-05 724-876-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2019-03-04 724-942-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MCMURRAY PA
2019-02-27 724-401-2XXX 2000–2999Assigned PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA 967E NEWFLORNCE PA
2019-02-13 724-227-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IMPERIAL PA
2019-02-13 724-242-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2019-02-13 724-243-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON PA
2019-02-13 724-264-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GROVE CITY PA
2019-02-13 724-269-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MERCER PA
2019-02-13 724-526-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EAST BRADY PA
2019-02-13 724-546-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LOWELLVL PA
2019-02-13 724-636-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SLIPPERYRK PA
2019-02-13 724-673-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCDONALD PA
2019-02-13 724-736-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PERRYOPOLS PA
2019-02-07 724-390-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BADEN PA
2019-02-05 724-936-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEW CASTLE PA
2019-02-04 724-529-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DAWSON PA
2019-02-04 724-639-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SALTSBURG PA
2019-02-04 724-666-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HICKORY PA
2019-02-04 724-697-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVONMORE 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.