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
2004-04-05 724-632-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 RICHEYVL PA
2004-04-05 724-639-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SALTSBURG PA
2004-04-05 724-645-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PERRYOPOLS PA
2004-04-05 724-716-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ZELIENOPLE PA
2004-04-05 724-726-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PARKWOOD PA
2004-04-05 724-740-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WAMPUM PA
2004-04-05 724-756-6XXX 6000–6999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PETROLIA PA
2004-04-05 724-764-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SMITHSFRRY PA
2004-04-05 724-860-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SMITHFIELD PA
2004-04-05 724-906-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 WMIDDLESEX PA
2004-04-05 724-924-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 PRINCETON PA
2004-04-05 724-946-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NEWWLMNGTN PA
2004-04-05 724-948-8XXX 8000–8999Assigned CORE COMMUNICATIONS, INC. - PA 3806 TAYLORSTN PA
2004-04-05 724-973-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 SMOCK PA
2004-04-02 724-254-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLYMER PA
2004-04-02 724-271-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CANONSBURG PA
2004-04-02 724-278-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DONORA PA
2004-04-02 724-279-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FAYETTE CY PA
2004-04-02 724-281-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FINLEYVL PA
2004-04-02 724-291-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HERMINIE PA
2004-04-02 724-296-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 JEANNETTE PA
2004-04-02 724-298-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCDONALD PA
2004-04-02 724-340-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BOLIVAR PA
2004-04-02 724-343-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLAIRSVL PA
2004-04-02 724-345-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BUFFALO PA
2004-04-02 724-364-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BROWNSVL PA
2004-04-02 724-432-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 EVANS CITY PA
2004-04-02 724-479-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOMER CITY PA
2004-04-02 724-486-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CONOQNSSNG PA
2004-04-02 724-490-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MARION CTR PA
2004-04-02 724-520-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 LATROBE PA
2004-04-02 724-529-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DAWSON PA
2004-04-02 724-566-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 CLAYSVILLE PA
2004-04-02 724-613-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MTPLEASANT PA
2004-04-02 724-638-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 GREENVILLE PA
2004-04-02 724-653-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MONESSEN PA
2004-04-02 724-735-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HARRISVL PA
2004-04-02 724-737-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MCLELANDTN PA
2004-04-02 724-739-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 DERRY PA
2004-04-02 724-748-2XXX 2000–2999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLACKTOWN PA
2004-04-02 724-780-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 FARMINGTON PA
2004-04-02 724-824-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 ELLWOOD CY PA
2004-04-02 724-848-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 MERIDIAN PA
2004-04-02 724-913-1XXX 1000–1999Assigned CORE COMMUNICATIONS, INC. - PA 3806 HOOKSTOWN PA
2004-04-02 724-964-5XXX 5000–5999Assigned CORE COMMUNICATIONS, INC. - PA 3806 NEWBEDFORD PA
2004-03-31 724-209-3XXX 3000–3999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AVELLA PA
2004-03-31 724-240-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 AMBRIDGE PA
2004-03-31 724-241-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BADEN PA
2004-03-31 724-248-4XXX 4000–4999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BLACK LICK PA
2004-03-31 724-270-0XXX 0000–0999Assigned CORE COMMUNICATIONS, INC. - PA 3806 BESSEMER 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.