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
2010-11-19 561-293-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2010-11-19 561-293-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2010-11-15 561-318-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J WPALMBEACH FL
2010-11-04 561-316-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 JUPITER FL
2010-11-04 561-767-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOYNTONBCH FL
2010-11-02 561-927-5XXX 5000–5999Assigned OMNIPOINT MIAMI E LICENSE, LLC 6889 DELRAY BCH FL
2010-10-26 561-284-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2010-10-26 561-285-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 PAHOKEE FL
2010-10-25 561-288-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 BOCA RATON FL
2010-10-25 561-666-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 DELRAY BCH FL
2010-10-21 561-318-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2010-10-21 561-318-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2010-10-21 561-318-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2010-10-21 561-318-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2010-10-13 561-299-9XXX 9000–9999Assigned TERRA NOVA TELECOM, INC. - FL 382G BOCA RATON FL
2010-10-13 561-316-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2010-10-13 561-444-4XXX 4000–4999Assigned TERRA NOVA TELECOM, INC. - FL 382G WPALMBEACH FL
2010-10-13 561-961-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C BOCA RATON FL
2010-10-11 561-290-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-10-11 561-291-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-10-11 561-291-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-10-11 561-292-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2010-10-11 561-318-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-10-11 561-318-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-10-08 561-206-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON FL
2010-10-08 561-953-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 BOCA RATON FL
2010-10-05 561-318-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-10-05 561-396-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2010-10-05 561-414-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2010-10-05 561-424-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2010-10-05 561-544-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2010-10-04 561-316-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2010-09-24 561-285-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E PAHOKEE FL
2010-09-14 561-705-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2010-09-07 561-463-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BELLEGLADE FL
2010-09-07 561-536-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2010-08-27 561-293-0XXX 0000–0999Assigned METROPCS, INC. 5562 WPALMBEACH FL
2010-08-27 561-293-1XXX 1000–1999Assigned METROPCS, INC. 5562 WPALMBEACH FL
2010-08-27 561-293-9XXX 9000–9999Assigned METROPCS, INC. 5562 WPALMBEACH FL
2010-08-18 561-822-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2010-08-17 561-727-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C WPALMBEACH FL
2010-07-30 561-316-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2010-07-30 561-316-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2010-07-22 561-246-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-07-22 561-246-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2010-07-15 561-401-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2010-07-15 561-666-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2010-07-09 561-921-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 DELRAY BCH FL
2010-07-06 561-665-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E DELRAY BCH FL
2010-07-06 561-740-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH 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.