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
2014-09-11 561-513-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E WPALMBEACH FL
2014-09-03 561-320-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J JUPITER FL
2014-08-25 561-406-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-08-25 561-406-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-08-25 561-406-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-08-25 561-406-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E JUPITER FL
2014-08-25 561-877-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2014-08-25 561-877-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2014-08-25 561-877-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOYNTONBCH FL
2014-08-12 561-501-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C DELRAY BCH FL
2014-07-29 561-513-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2014-07-29 561-701-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2014-07-18 561-517-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-07-18 561-517-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-07-18 561-517-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-07-17 561-806-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2014-07-17 561-806-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2014-07-14 561-419-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2014-07-01 561-508-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C WPALMBEACH FL
2014-06-23 561-571-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2014-06-23 561-571-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2014-06-23 561-571-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2014-06-23 561-571-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2014-06-23 561-571-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - FL 982E BOCA RATON FL
2014-06-20 561-508-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-06-20 561-508-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-06-17 561-571-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BOCA RATON FL
2014-06-12 561-430-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BOCA RATON FL
2014-06-11 561-406-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J JUPITER FL
2014-06-11 561-513-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-06-11 561-701-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-06-11 561-708-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BELLEGLADE FL
2014-06-11 561-808-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DELRAY BCH FL
2014-06-03 561-808-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 DELRAY BCH FL
2014-05-19 561-425-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-05-19 561-501-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J DELRAY BCH FL
2014-05-19 561-877-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BOYNTONBCH FL
2014-05-16 561-513-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-05-16 561-513-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-05-16 561-513-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2014-05-14 561-808-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 DELRAY BCH FL
2014-05-08 561-806-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BOYNTONBCH FL
2014-05-06 561-708-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BELLEGLADE FL
2014-05-06 561-877-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BOYNTONBCH FL
2014-04-30 561-501-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DELRAY BCH FL
2014-04-30 561-508-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-04-30 561-508-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-04-30 561-508-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-04-30 561-508-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2014-04-28 561-430-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J 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.