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
2018-05-17 814-236-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CURWENSVL PA
2018-05-17 814-236-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CURWENSVL PA
2018-05-17 814-338-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PTALLEGANY PA
2018-05-17 814-364-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CENTREHALL PA
2018-05-17 814-364-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CENTREHALL PA
2018-05-17 814-377-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEAVERDALE PA
2018-05-17 814-377-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEAVERDALE PA
2018-05-17 814-420-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BARNESBORO PA
2018-05-17 814-420-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BARNESBORO PA
2018-05-17 814-466-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOALSBURG PA
2018-05-17 814-492-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRENCHVL PA
2018-05-17 814-492-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRENCHVL PA
2018-05-17 814-492-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRENCHVL PA
2018-05-17 814-497-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOUTZDALE PA
2018-05-17 814-497-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOUTZDALE PA
2018-05-17 814-501-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CALLENSBG PA
2018-05-17 814-501-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CALLENSBG PA
2018-05-17 814-501-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CALLENSBG PA
2018-05-17 814-565-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-05-17 814-565-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-05-17 814-565-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLEARVILLE PA
2018-05-17 814-633-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REYNOLDSVL PA
2018-05-17 814-633-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REYNOLDSVL PA
2018-05-17 814-712-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REW PA
2018-05-17 814-712-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REW PA
2018-05-17 814-712-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REW PA
2018-05-17 814-810-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 BELLEFONTE PA
2018-05-17 814-829-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARKLESBG PA
2018-05-17 814-829-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARKLESBG PA
2018-05-17 814-829-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARKLESBG PA
2018-05-17 814-906-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-05-17 814-906-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-05-17 814-906-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BEDFORDVLY PA
2018-05-17 814-917-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEEPER PA
2018-05-17 814-917-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEEPER PA
2018-05-17 814-917-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEEPER PA
2018-05-17 814-939-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PUNXSUTWNY PA
2018-05-17 814-939-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PUNXSUTWNY PA
2018-05-17 814-945-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LUDLOW PA
2018-05-17 814-978-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DUKECENTER PA
2018-05-17 814-978-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DUKECENTER PA
2018-05-17 814-978-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DUKECENTER PA
2018-05-17 814-993-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-05-17 814-993-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-05-17 814-993-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2018-05-16 814-214-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ORBISONIA PA
2018-05-16 814-214-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ORBISONIA PA
2018-05-16 814-214-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ORBISONIA PA
2018-05-16 814-910-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHADE GAP PA
2018-05-16 814-910-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SHADE GAP 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.