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 561
TELEPORT COMMUNICATIONS AMERICA, LLC - FL 65
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
2026-04-29 561-854-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2026-04-28 561-854-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2026-04-28 561-854-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2026-04-28 561-854-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2026-04-28 561-854-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2025-05-30 561-605-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2025-05-30 561-605-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2022-09-01 561-764-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2022-04-25 561-851-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2022-04-08 561-851-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2022-04-08 561-851-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2022-04-08 561-851-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2020-03-30 561-678-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOYNTONBCH FL
2019-12-05 561-946-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-07-17 561-473-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-05-31 561-473-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-05-30 561-473-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-05-01 561-946-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-04-18 561-581-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 JUPITER FL
2019-02-01 561-446-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-02-01 561-446-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-02-01 561-446-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2019-02-01 561-446-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-07-26 561-343-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2018-06-25 561-903-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOYNTONBCH FL
2018-04-11 561-359-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 DELRAY BCH FL
2018-01-12 561-341-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-01-12 561-341-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-01-12 561-341-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-01-12 561-341-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-01-12 561-341-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-01-12 561-341-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2018-01-12 561-341-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-12-18 561-675-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-11-13 561-268-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-11-13 561-549-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2017-05-08 561-812-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2016-09-09 561-812-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2016-09-09 561-812-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2016-07-26 561-569-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2015-07-23 561-529-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 JUPITER FL
2015-05-29 561-898-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2015-05-29 561-898-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL

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.