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 445
TELEPORT COMMUNICATIONS AMERICA, LLC - PA 29
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
2026-05-12 445-279-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHPHSBZN43 PA
2024-12-17 445-286-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN1 PA
2024-08-29 445-286-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN1 PA
2022-05-19 445-268-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2022-05-19 445-268-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-11-17 445-228-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN4 PA
2021-11-17 445-228-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN4 PA
2021-11-17 445-228-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN4 PA
2021-11-17 445-228-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN4 PA
2021-11-17 445-228-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN4 PA
2021-11-05 445-258-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-11-05 445-258-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-11-05 445-258-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-11-05 445-258-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-11-05 445-258-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-11-05 445-258-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 NEWTOWN PA
2021-06-18 445-201-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN1 PA
2020-09-28 445-224-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 LANSDALE PA
2020-09-28 445-224-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 LANSDALE PA
2018-06-27 445-888-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN2 PA
2018-03-13 445-888-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - PA 7309 PHLDLPHZN2 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.