NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 603
TELEPORT COMMUNICATIONS AMERICA, LLC - NH 82
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
2025-07-28 603-467-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 MANCHESTER NH
2023-11-16 603-956-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2023-11-01 603-607-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 WCHESTEFLD NH
2023-02-27 603-200-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NEWMARKET NH
2023-02-02 603-725-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 TAMWORTH NH
2023-01-10 603-538-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PITTSBURG NH
2022-02-01 603-277-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 HANOVER NH
2021-05-17 603-453-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 HAMPSTEAD NH
2021-03-24 603-414-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 SUNAPEE NH
2021-03-15 603-823-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 FRANCONIA NH
2021-03-08 603-915-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 GORHAM NH
2021-01-05 603-602-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2021-01-05 603-602-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2021-01-05 603-602-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2020-12-04 603-602-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2020-12-04 603-602-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2020-10-09 603-301-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 CTROSSIPEE NH
2020-09-25 603-331-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 COLEBROOK NH
2020-09-25 603-680-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 HILLSBORO NH
2020-09-25 603-739-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NOWOODSTOK NH
2020-08-24 603-702-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 KINGSTON NH
2020-04-23 603-255-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 MANCHESTER NH
2020-04-10 603-995-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 HENNIKER NH
2020-04-01 603-280-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 BARRINGTON NH
2020-03-06 603-855-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ALTON NH
2020-02-07 603-250-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 CENTER HBR NH
2020-02-07 603-654-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 WILTON NH
2020-02-07 603-839-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 FARMINGTON NH
2019-11-27 603-741-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NEW BOSTON NH
2019-11-25 603-309-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NEWPORT NH
2019-08-20 603-790-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 W LEBANON NH
2019-06-21 603-506-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 MANCHESTER NH
2019-05-22 603-368-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2019-05-10 603-693-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 EPPING NH
2019-04-24 603-604-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 RYE BEACH NH
2019-04-19 603-243-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 WOODSVILLE NH
2019-04-19 603-257-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PLAISTOW NH
2019-04-19 603-287-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 CLAREMONT NH
2019-04-19 603-307-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 NO CONWAY NH
2019-04-19 603-403-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 ROCHESTER NH
2019-04-19 603-408-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 BERLIN NH
2019-04-19 603-575-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 LITTLETON NH
2019-04-19 603-684-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 LANCASTER NH
2019-04-19 603-971-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 RINDGE NH
2019-04-15 603-832-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 LACONIA NH
2019-03-26 603-704-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 DERRY NH
2019-03-26 603-704-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 DERRY NH
2019-03-07 603-406-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 CONCORD NH
2018-12-28 603-368-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 PORTSMOUTH NH
2018-01-05 603-935-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - NH 8299 MANCHESTER NH

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.