NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

1 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2017-11-17 561-286-0XXX 0000–0999Assigned IP HORIZON LLC 515J BELLEGLADE FL
2017-11-17 561-334-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOCA RATON FL
2017-11-16 561-264-9XXX 9000–9999Assigned IP HORIZON LLC 515J PAHOKEE FL
2017-11-13 561-268-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2017-11-13 561-549-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BOCA RATON FL
2017-11-13 561-903-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2017-11-13 561-903-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BOYNTONBCH FL
2017-10-18 561-355-9XXX 9000–9999Assigned METROPCS, INC. 5562 WPALMBEACH FL
2017-10-18 561-493-4XXX 4000–4999Assigned METROPCS, INC. 5562 WPALMBEACH FL
2017-10-18 561-995-3XXX 3000–3999Assigned METROPCS, INC. 5562 BOCA RATON FL
2017-09-18 561-323-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-18 561-323-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-18 561-323-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-18 561-365-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-18 561-365-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-18 561-365-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-18 561-365-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-09-12 561-323-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WPALMBEACH FL
2017-09-12 561-365-9XXX 9000–9999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J WPALMBEACH FL
2017-09-11 561-569-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2017-09-11 561-862-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2017-09-11 561-862-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2017-08-30 561-323-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WPALMBEACH FL
2017-08-28 561-781-4XXX 4000–4999Assigned METROPCS, INC. 5562 JUPITER FL
2017-08-21 561-323-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-08-21 561-323-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-08-17 561-323-7XXX 7000–7999Assigned ONVOY, LLC - FL 937C WPALMBEACH FL
2017-08-07 561-323-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2017-08-03 561-323-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2017-07-18 561-569-8XXX 8000–8999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E BOCA RATON FL
2017-07-18 561-815-8XXX 8000–8999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E WPALMBEACH FL
2017-07-18 561-903-9XXX 9000–9999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E BOYNTONBCH FL
2017-07-05 561-292-9XXX 9000–9999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E BOYNTONBCH FL
2017-06-30 561-365-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J WPALMBEACH FL
2017-06-30 561-365-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J WPALMBEACH FL
2017-06-30 561-365-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J WPALMBEACH FL
2017-06-30 561-569-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2017-06-30 561-569-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2017-06-29 561-903-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BOYNTONBCH FL
2017-06-19 561-822-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-06-19 561-837-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2017-06-08 561-815-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2017-06-08 561-815-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL
2017-06-07 561-815-5XXX 5000–5999Assigned IP HORIZON LLC 515J WPALMBEACH FL
2017-06-06 561-344-1XXX 1000–1999Assigned IP HORIZON LLC 515J DELRAY BCH FL
2017-06-06 561-569-4XXX 4000–4999Assigned IP HORIZON LLC 515J BOCA RATON FL
2017-06-06 561-658-9XXX 9000–9999Assigned IP HORIZON LLC 515J JUPITER FL
2017-06-06 561-903-8XXX 8000–8999Assigned IP HORIZON LLC 515J BOYNTONBCH FL
2017-06-01 561-631-9XXX 9000–9999Assigned PEERLESS NETWORK OF FLORIDA, LLC - FL 902E WPALMBEACH FL
2017-05-25 561-631-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J WPALMBEACH FL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.