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
2013-04-25 414-595-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-04-25 414-865-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN4 WI
2013-04-22 414-400-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-04-22 414-400-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-04-22 414-600-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN4 WI
2013-04-10 414-216-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN5 WI
2013-04-10 414-216-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN5 WI
2013-04-09 414-522-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2013-04-08 414-216-5XXX 5000–5999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MILWAUKZN5 WI
2013-04-08 414-369-6XXX 6000–6999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MILWAUKZN5 WI
2013-04-08 414-386-6XXX 6000–6999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MILWAUKZN3 WI
2013-04-08 414-448-6XXX 6000–6999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MILWAUKZN3 WI
2013-04-08 414-600-1XXX 1000–1999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MILWAUKZN4 WI
2013-04-08 414-600-2XXX 2000–2999Assigned PEERLESS NETWORK OF WISCONSIN, LLC - WI 227F MILWAUKZN4 WI
2013-03-20 414-914-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K MILWAUKZN1 WI
2013-03-13 414-316-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2013-03-13 414-316-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2013-03-11 414-204-1XXX 1000–1999Assigned NUSO, LLC 551G MILWAUKZN1 WI
2013-03-04 414-522-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-03-04 414-522-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-03-04 414-522-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-03-04 414-522-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-02-07 414-400-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-02-07 414-400-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2012-12-27 414-316-2XXX 2000–2999Assigned TDS METROCOM, LLC 520K MILWAUKZN1 WI
2012-12-27 414-316-3XXX 3000–3999Assigned TDS METROCOM, LLC 520K MILWAUKZN1 WI
2012-12-27 414-888-4XXX 4000–4999Assigned ONVOY, LLC - WI 225C MILWAUKZN5 WI
2012-12-27 414-888-5XXX 5000–5999Assigned ONVOY, LLC - WI 225C MILWAUKZN5 WI
2012-12-27 414-888-6XXX 6000–6999Assigned ONVOY, LLC - WI 225C MILWAUKZN5 WI
2012-12-27 414-888-7XXX 7000–7999Assigned ONVOY, LLC - WI 225C MILWAUKZN5 WI
2012-12-27 414-888-8XXX 8000–8999Assigned ONVOY, LLC - WI 225C MILWAUKZN5 WI
2012-12-18 414-585-1XXX 1000–1999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-18 414-585-2XXX 2000–2999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-18 414-585-3XXX 3000–3999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-18 414-585-4XXX 4000–4999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-18 414-585-5XXX 5000–5999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-18 414-585-6XXX 6000–6999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-18 414-585-7XXX 7000–7999Assigned WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2012-12-03 414-409-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2012-12-03 414-409-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN3 WI
2012-11-19 414-522-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-11-13 414-242-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-11-13 414-242-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-11-13 414-242-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-11-13 414-242-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-11-13 414-242-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2012-11-08 414-369-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2012-11-08 414-369-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN5 WI
2012-10-23 414-400-0XXX 0000–0999Assigned ONVOY, LLC - WI 225C MILWAUKZN1 WI
2012-10-23 414-400-4XXX 4000–4999Assigned ONVOY, LLC - WI 225C MILWAUKZN1 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.