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
2018-05-22 724-394-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YOUNGWOOD PA
2018-05-22 724-394-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YOUNGWOOD PA
2018-05-22 724-394-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 YOUNGWOOD PA
2018-05-22 724-429-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BURGETTSTN PA
2018-05-22 724-429-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BURGETTSTN PA
2018-05-22 724-432-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EVANS CITY PA
2018-05-22 724-432-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EVANS CITY PA
2018-05-22 724-432-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EVANS CITY PA
2018-05-22 724-441-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LIGONIER PA
2018-05-22 724-441-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LIGONIER PA
2018-05-22 724-441-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LIGONIER PA
2018-05-22 724-446-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HERMINIE PA
2018-05-22 724-446-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HERMINIE PA
2018-05-22 724-446-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HERMINIE PA
2018-05-22 724-474-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 INDIANHEAD PA
2018-05-22 724-474-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 INDIANHEAD PA
2018-05-22 724-474-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 INDIANHEAD PA
2018-05-22 724-476-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 W SUNBURY PA
2018-05-22 724-476-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 W SUNBURY PA
2018-05-22 724-476-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 W SUNBURY PA
2018-05-22 724-486-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONOQNSSNG PA
2018-05-22 724-486-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONOQNSSNG PA
2018-05-22 724-486-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONOQNSSNG PA
2018-05-22 724-517-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IMPERIAL PA
2018-05-22 724-517-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IMPERIAL PA
2018-05-22 724-517-9XXX 9000–9999Assigned CORE COMMUNICATIONS, INC. - PA 3806 IMPERIAL PA
2018-05-22 724-522-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 JEANNETTE PA
2018-05-22 724-527-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 JEANNETTE PA
2018-05-22 724-528-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WMIDDLESEX PA
2018-05-22 724-528-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WMIDDLESEX PA
2018-05-22 724-574-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-05-22 724-574-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 VANDERGRFT PA
2018-05-22 724-582-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GLENWILLRD PA
2018-05-22 724-582-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GLENWILLRD PA
2018-05-22 724-587-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVELLA PA
2018-05-22 724-587-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVELLA PA
2018-05-22 724-607-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CHICORA PA
2018-05-22 724-607-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CHICORA PA
2018-05-22 724-607-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CHICORA PA
2018-05-22 724-616-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BRUIN PA
2018-05-22 724-616-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BRUIN PA
2018-05-22 724-616-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BRUIN PA
2018-05-22 724-634-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WMIDDLESEX PA
2018-05-22 724-642-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DAWSON PA
2018-05-22 724-655-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCMURRAY PA
2018-05-22 724-659-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FOXBURG PA
2018-05-22 724-663-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLAYSVILLE PA
2018-05-22 724-663-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLAYSVILLE PA
2018-05-22 724-665-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON PA
2018-05-22 724-665-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BELLEVRNON 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.