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
2012-03-09 561-336-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2012-03-09 561-336-7XXX 7000–7999Assigned BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 BOYNTONBCH FL
2012-03-09 561-819-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2012-03-05 561-412-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-29 561-328-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-02-23 561-225-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-23 561-225-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-17 561-231-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-17 561-231-4XXX 4000–4999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-17 561-257-7XXX 7000–7999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BELLEGLADE FL
2012-02-16 561-235-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-02-16 561-235-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-02-15 561-989-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2012-02-06 561-444-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-02-06 561-444-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-01-24 561-412-2XXX 2000–2999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2012-01-17 561-465-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-01-11 561-223-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2012-01-11 561-288-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOCA RATON FL
2012-01-11 561-465-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BOCA RATON FL
2012-01-09 561-231-1XXX 1000–1999Assigned METROPCS, INC. 5562 WPALMBEACH FL
2012-01-09 561-529-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JUPITER FL
2012-01-09 561-654-0XXX 0000–0999Assigned METROPCS, INC. 5562 DELRAY BCH FL
2012-01-05 561-454-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL
2011-12-29 561-465-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BOCA RATON FL
2011-12-28 561-257-8XXX 8000–8999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BELLEGLADE FL
2011-12-21 561-266-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J DELRAY BCH FL
2011-12-21 561-465-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BOCA RATON FL
2011-12-21 561-465-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BOCA RATON FL
2011-12-15 561-223-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-12-09 561-855-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-12-09 561-855-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-12-09 561-855-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-12-09 561-855-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-11-29 561-526-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL
2011-11-21 561-235-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-11-21 561-235-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-11-21 561-235-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-11-21 561-235-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-11-21 561-777-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2011-11-21 561-777-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2011-11-16 561-529-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JUPITER FL
2011-11-16 561-855-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C WPALMBEACH FL
2011-11-14 561-203-9XXX 9000–9999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E JUPITER FL
2011-11-10 561-257-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BELLEGLADE FL
2011-11-08 561-336-1XXX 1000–1999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E BOYNTONBCH FL
2011-11-08 561-336-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J BOYNTONBCH FL
2011-11-08 561-342-8XXX 8000–8999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E PAHOKEE FL
2011-11-08 561-450-9XXX 9000–9999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E DELRAY BCH FL
2011-10-31 561-962-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON 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.