NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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, all time — NPA 814
CORE COMMUNICATIONS, INC. - PA 505
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
2019-04-26 814-468-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOWARD PA
2019-04-26 814-526-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HAWTHORN PA
2019-03-13 814-387-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SNOW SHOE PA
2019-03-13 814-542-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MOUNTUNION PA
2019-03-13 814-543-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MOUNTUNION PA
2019-03-13 814-633-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REYNOLDSVL PA
2019-03-13 814-633-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 REYNOLDSVL PA
2019-03-13 814-729-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ROARINGSPG PA
2019-03-13 814-755-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TIONESTA PA
2019-03-13 814-766-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LOYSBURG PA
2019-03-13 814-766-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LOYSBURG PA
2019-03-13 814-766-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LOYSBURG PA
2019-03-13 814-832-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WILLIAMSBG PA
2019-03-13 814-832-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WILLIAMSBG PA
2019-03-13 814-847-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CHARLESVL PA
2019-03-13 814-847-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CHARLESVL PA
2019-03-13 814-848-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ULYSSES PA
2019-03-12 814-246-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PUNXSUTWNY PA
2019-03-12 814-733-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCHELLSBG PA
2019-03-12 814-733-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCHELLSBG PA
2019-03-12 814-733-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SCHELLSBG PA
2019-03-12 814-736-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PORTAGE PA
2019-03-11 814-276-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 OSTERBURG PA
2019-03-11 814-674-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PATTON PA
2019-03-11 814-674-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PATTON PA
2019-03-11 814-778-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MT JEWETT PA
2019-03-11 814-778-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MT JEWETT PA
2019-03-08 814-627-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCONELLSTN PA
2019-03-08 814-627-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCONELLSTN PA
2019-03-08 814-627-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCONELLSTN PA
2019-03-07 814-263-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRENCHVL PA
2019-03-07 814-263-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRENCHVL PA
2019-03-07 814-263-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FRENCHVL PA
2019-03-07 814-326-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 KNOXVILLE PA
2019-03-07 814-378-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOUTZDALE PA
2019-03-07 814-378-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOUTZDALE PA
2019-03-07 814-433-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GALETON PA
2019-03-07 814-435-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GALETON PA
2019-03-07 814-744-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LEEPER PA
2019-03-07 814-842-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HYNDMAN PA
2019-03-07 814-842-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HYNDMAN PA
2019-03-06 814-223-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLARION PA
2019-03-06 814-223-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLARION PA
2019-03-06 814-223-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLARION PA
2019-03-06 814-267-7XXX 7000–7999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BERLIN PA
2019-03-06 814-466-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOALSBURG PA
2019-03-06 814-735-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BREEZEWOOD PA
2019-03-06 814-742-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLWOOD PA
2019-03-06 814-742-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLWOOD PA
2019-03-06 814-742-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLWOOD PA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.