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 414
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
2014-05-20 414-533-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-533-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2014-05-20 414-539-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN1 WI
2014-05-20 414-539-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN1 WI
2014-05-20 414-797-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN4 WI
2014-05-20 414-797-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN4 WI
2014-05-20 414-797-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN4 WI
2014-05-20 414-856-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2014-05-20 414-856-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2014-05-20 414-856-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2014-05-14 414-979-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN4 WI
2014-05-13 414-797-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN4 WI
2014-05-06 414-433-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2014-05-06 414-433-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2014-05-06 414-433-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2014-04-23 414-269-9XXX 9000–9999Assigned AT&T ENTERPRISES, LLC 516C MILWAUKZN1 WI
2014-04-14 414-539-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN1 WI
2014-04-14 414-539-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN1 WI
2014-04-08 414-269-1XXX 1000–1999Assigned TDS METROCOM, LLC 520K MILWAUKZN1 WI
2014-03-27 414-269-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN1 WI
2014-03-27 414-269-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN1 WI
2014-03-26 414-533-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J MILWAUKZN1 WI
2014-03-24 414-439-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-24 414-439-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-24 414-439-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-24 414-439-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-24 414-439-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-24 414-439-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-21 414-435-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN5 WI
2014-03-18 414-376-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2014-03-18 414-376-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2014-03-18 414-376-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2014-03-12 414-204-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-12 414-204-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-12 414-204-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-12 414-249-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-12 414-249-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2014-03-12 414-334-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN5 WI
2014-02-24 414-797-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN4 WI
2014-02-07 414-376-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN5 WI
2013-12-27 414-585-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C MILWAUKZN1 WI
2013-12-26 414-751-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MILWAUKZN4 WI
2013-12-19 414-369-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN5 WI
2013-11-12 414-433-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN3 WI

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.