NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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 740
HORIZON SERVICES, INC. - OH 28
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
2012-12-26 740-830-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G MT VERNON OH
2012-12-26 740-870-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G LANCASTER OH
2012-12-05 740-745-6XXX 6000–6999Assigned HORIZON SERVICES, INC. - OH 601G ST LOUISVL OH
2012-12-05 740-763-5XXX 5000–5999Assigned HORIZON SERVICES, INC. - OH 601G HANOVER OH
2012-12-05 740-787-3XXX 3000–3999Assigned HORIZON SERVICES, INC. - OH 601G GRATIOT OH
2012-12-05 740-920-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G GRANVILLE OH
2012-11-02 740-261-2XXX 2000–2999Assigned HORIZON SERVICES, INC. - OH 601G NEWCONCORD OH
2012-11-02 740-410-2XXX 2000–2999Assigned HORIZON SERVICES, INC. - OH 601G BEVERLY OH
2012-11-02 740-896-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G LOWELL OH
2012-11-01 740-241-3XXX 3000–3999Assigned HORIZON SERVICES, INC. - OH 601G BYESVILLE OH
2012-11-01 740-265-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G DEXTERCITY OH
2012-11-01 740-293-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G BARLOW OH
2012-11-01 740-305-2XXX 2000–2999Assigned HORIZON SERVICES, INC. - OH 601G CALDWELL OH
2012-11-01 740-631-3XXX 3000–3999Assigned HORIZON SERVICES, INC. - OH 601G SUMMERFLD OH
2012-10-19 740-781-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G CAMBRIDGE OH
2012-08-28 740-216-3XXX 3000–3999Assigned HORIZON SERVICES, INC. - OH 601G LOGAN OH
2012-08-28 740-226-6XXX 6000–6999Assigned HORIZON SERVICES, INC. - OH 601G BEAVER OH
2012-08-28 740-508-3XXX 3000–3999Assigned HORIZON SERVICES, INC. - OH 601G POMEROY OH
2012-08-28 740-648-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G WAVERLY OH
2012-08-28 740-662-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G GUYSVILLE OH
2012-08-28 740-677-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G THE PLAINS OH
2012-08-28 740-696-6XXX 6000–6999Assigned HORIZON SERVICES, INC. - OH 601G SHADE OH
2012-08-28 740-854-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G ALBANY OH
2012-08-28 740-861-2XXX 2000–2999Assigned HORIZON SERVICES, INC. - OH 601G CHESAPEAKE OH
2012-08-28 740-970-6XXX 6000–6999Assigned HORIZON SERVICES, INC. - OH 601G PIKETON OH
2012-05-03 740-618-1XXX 1000–1999Assigned HORIZON SERVICES, INC. - OH 601G NEWARK OH
2012-03-20 740-716-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G PORTSMOUTH OH
2012-03-15 740-608-0XXX 0000–0999Assigned HORIZON SERVICES, INC. - OH 601G ATHENS OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.