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
2012-09-13 561-331-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-09-13 561-331-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-09-13 561-331-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-09-13 561-331-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-09-07 561-203-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2012-09-07 561-203-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2012-08-31 561-325-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2012-08-31 561-405-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON FL
2012-08-31 561-405-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON FL
2012-08-23 561-755-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEGLADE FL
2012-08-14 561-303-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2012-08-09 561-257-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BELLEGLADE FL
2012-08-08 561-367-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-08-08 561-454-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2012-08-08 561-870-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2012-08-08 561-923-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-08-08 561-962-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-07-24 561-777-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOYNTONBCH FL
2012-07-13 561-223-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-07-13 561-494-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-07-12 561-666-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 DELRAY BCH FL
2012-06-28 561-221-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOCA RATON FL
2012-06-21 561-345-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2012-06-21 561-345-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2012-06-20 561-465-7XXX 7000–7999Assigned ONVOY, LLC - FL 937C BOCA RATON FL
2012-06-15 561-412-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-06-15 561-766-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-06-07 561-320-1XXX 1000–1999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E JUPITER FL
2012-06-07 561-320-2XXX 2000–2999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E JUPITER FL
2012-06-07 561-320-3XXX 3000–3999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E JUPITER FL
2012-06-07 561-412-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2012-06-05 561-465-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2012-06-04 561-777-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BOYNTONBCH FL
2012-05-31 561-257-2XXX 2000–2999Assigned ONVOY, LLC - FL 937C BELLEGLADE FL
2012-05-31 561-279-3XXX 3000–3999Assigned ONVOY, LLC - FL 937C DELRAY BCH FL
2012-05-31 561-336-6XXX 6000–6999Assigned ONVOY, LLC - FL 937C BOYNTONBCH FL
2012-05-31 561-529-5XXX 5000–5999Assigned ONVOY, LLC - FL 937C JUPITER FL
2012-05-31 561-902-3XXX 3000–3999Assigned ONVOY, LLC - FL 937C PAHOKEE FL
2012-05-14 561-221-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-05-14 561-221-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2012-05-14 561-225-0XXX 0000–0999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 WPALMBEACH FL
2012-05-14 561-225-2XXX 2000–2999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2012-05-14 561-231-7XXX 7000–7999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2012-05-14 561-231-8XXX 8000–8999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2012-05-14 561-231-9XXX 9000–9999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2012-05-14 561-240-0XXX 0000–0999Assigned ONVOY, LLC - FL 937C JUPITER FL
2012-05-14 561-240-1XXX 1000–1999Assigned ONVOY, LLC - FL 937C JUPITER FL
2012-05-14 561-240-2XXX 2000–2999Assigned ONVOY, LLC - FL 937C JUPITER FL
2012-05-14 561-240-3XXX 3000–3999Assigned ONVOY, LLC - FL 937C JUPITER FL
2012-05-14 561-240-4XXX 4000–4999Assigned ONVOY, LLC - FL 937C JUPITER 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.