NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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 814
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 6
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
2018-10-11 814-307-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROCKWAY PA
2018-10-11 814-307-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROCKWAY PA
2018-10-11 814-346-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRANKLIN PA
2018-10-11 814-436-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GRAND VLY PA
2018-10-11 814-557-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRIFTWOOD PA
2018-10-11 814-557-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRIFTWOOD PA
2018-10-11 814-557-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRIFTWOOD PA
2018-10-11 814-557-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRIFTWOOD PA
2018-10-11 814-557-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRIFTWOOD PA
2018-10-11 814-557-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DRIFTWOOD PA
2018-10-11 814-562-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EMPORIUM PA
2018-10-11 814-565-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-10-11 814-565-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-10-11 814-565-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-10-11 814-565-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-10-11 814-576-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-576-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONNEAUTVL PA
2018-10-11 814-626-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALTOONA PA
2018-10-11 814-626-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALTOONA PA
2018-10-11 814-626-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ALTOONA PA
2018-10-11 814-646-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROOKVILLE PA
2018-10-11 814-847-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CHARLESVL PA
2018-10-11 814-906-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-10-11 814-906-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-10-11 814-906-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-10-11 814-906-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-10-11 814-906-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-10-11 814-906-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-10-11 814-914-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CORSICA PA
2018-10-11 814-914-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CORSICA PA
2018-10-11 814-914-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CORSICA PA
2018-10-11 814-914-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CORSICA PA
2018-10-11 814-914-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CORSICA PA
2018-10-11 814-993-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-10-11 814-993-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-10-11 814-993-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-10-11 814-993-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-10-11 814-994-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER PA
2018-10-11 814-994-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER PA
2018-10-11 814-994-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER PA
2018-10-11 814-994-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER PA
2018-10-11 814-994-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER PA
2018-10-11 814-994-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER PA
2018-10-11 814-994-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 COLVER 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.