NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

4 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 414
ONVOY, LLC - WI 3
BANDWIDTH.COM CLEC, LLC - WI 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
2010-02-04 414-301-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2010-02-03 414-367-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2010-02-03 414-368-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN4 WI
2010-01-27 414-216-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2010-01-25 414-395-4XXX 4000–4999Assigned TDS METROCOM, LLC 520K MILWAUKZN1 WI
2010-01-07 414-502-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2010-01-07 414-502-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2010-01-07 414-502-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2009-11-17 414-345-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-11-17 414-345-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-11-17 414-374-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-11-12 414-208-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2009-10-19 414-395-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C MILWAUKZN1 WI
2009-09-22 414-255-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-255-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-255-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-308-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-308-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-308-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-308-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-336-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-336-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-343-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-22 414-343-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-09-10 414-235-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN3 WI
2009-08-21 414-308-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-08-21 414-308-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-08-21 414-308-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-08-21 414-308-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-08-21 414-308-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-07-08 414-395-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2009-06-15 414-255-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN1 WI
2009-06-15 414-255-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN1 WI
2009-06-10 414-299-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF WISCONSIN, LP - WI 7322 MILWAUKZN1 WI
2009-05-26 414-935-5XXX 5000–5999Assigned TDS METROCOM, LLC 520K MILWAUKZN1 WI
2009-05-13 414-207-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2009-04-22 414-937-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2009-04-22 414-937-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2009-03-30 414-215-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2009-02-09 414-215-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2009-01-21 414-255-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN1 WI
2009-01-07 414-236-4XXX 4000–4999Assigned ONVOY, LLC - WI 225C MILWAUKZN4 WI
2009-01-07 414-255-7XXX 7000–7999Assigned ONVOY, LLC - WI 225C MILWAUKZN1 WI
2009-01-07 414-255-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C MILWAUKZN1 WI
2009-01-07 414-255-9XXX 9000–9999Assigned ONVOY, LLC - WI 225C MILWAUKZN1 WI
2009-01-07 414-446-2XXX 2000–2999Assigned ONVOY, LLC - WI 225C MILWAUKZN4 WI
2008-12-30 414-308-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J MILWAUKZN1 WI
2008-12-22 414-856-3XXX 3000–3999Assigned TDS METROCOM, LLC 520K MILWAUKZN5 WI
2008-12-05 414-554-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MILWAUKZN1 WI
2008-12-05 414-554-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MILWAUKZN1 WI

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.