NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 561
BANDWIDTH.COM CLEC, LLC - FL 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
2014-04-22 561-406-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C JUPITER FL
2014-04-21 561-342-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J PAHOKEE FL
2014-04-21 561-508-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-04-15 561-430-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2014-04-15 561-430-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2014-04-15 561-430-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2014-04-15 561-529-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JUPITER FL
2014-04-15 561-529-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JUPITER FL
2014-04-14 561-501-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2014-04-14 561-501-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2014-04-14 561-501-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2014-04-14 561-501-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2014-04-09 561-430-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2014-04-09 561-430-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2014-04-08 561-320-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-04-08 561-320-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-04-08 561-320-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-04-08 561-349-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E PAHOKEE FL
2014-04-08 561-349-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E PAHOKEE FL
2014-04-08 561-440-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-440-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-469-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-04-08 561-708-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BELLEGLADE FL
2014-04-08 561-708-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BELLEGLADE FL
2014-04-02 561-469-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C WPALMBEACH FL
2014-03-19 561-430-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOCA RATON FL
2014-03-19 561-469-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-03-19 561-571-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON FL
2014-03-14 561-440-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-03-11 561-701-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-03-11 561-945-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 DELRAY BCH FL
2014-03-05 561-430-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOCA RATON FL
2014-03-05 561-480-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-05 561-480-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2014-03-04 561-808-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL

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.