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
2011-10-24 561-293-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-10-24 561-293-6XXX 6000–6999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-10-24 561-318-2XXX 2000–2999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-10-17 561-444-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-10-17 561-444-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-09-27 561-600-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOYNTONBCH FL
2011-09-26 561-336-0XXX 0000–0999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E BOYNTONBCH FL
2011-09-14 561-223-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2011-09-14 561-223-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 WPALMBEACH FL
2011-09-08 561-221-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-09-08 561-221-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-09-08 561-221-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2011-09-08 561-336-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C BOYNTONBCH FL
2011-08-30 561-223-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-08-30 561-223-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-08-30 561-235-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BOCA RATON FL
2011-08-30 561-265-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DELRAY BCH FL
2011-08-30 561-336-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BOYNTONBCH FL
2011-08-30 561-529-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J JUPITER FL
2011-08-26 561-221-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2011-08-24 561-755-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEGLADE FL
2011-08-18 561-223-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-08-12 561-350-2XXX 2000–2999Assigned METROPCS, INC. 5562 DELRAY BCH FL
2011-07-28 561-257-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 BELLEGLADE FL
2011-07-25 561-232-3XXX 3000–3999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2011-07-25 561-235-7XXX 7000–7999Assigned ONVOY, LLC - FL 937C BOCA RATON FL
2011-07-21 561-235-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2011-07-21 561-945-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2011-07-11 561-526-3XXX 3000–3999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL
2011-07-11 561-526-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL
2011-06-23 561-232-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-06-23 561-232-1XXX 1000–1999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-06-22 561-412-9XXX 9000–9999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2011-06-16 561-221-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2011-06-16 561-285-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J PAHOKEE FL
2011-06-16 561-983-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BELLEGLADE FL
2011-06-10 561-232-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2011-06-10 561-401-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JUPITER FL
2011-05-25 561-600-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2011-05-25 561-600-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2011-05-25 561-855-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2011-05-23 561-328-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 WPALMBEACH FL
2011-05-20 561-771-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C PAHOKEE FL
2011-05-18 561-232-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2011-05-18 561-232-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2011-05-12 561-328-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-05-12 561-328-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-05-12 561-328-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-05-12 561-328-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2011-05-06 561-322-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 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.