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 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
2011-10-04 414-394-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-394-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-394-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-394-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-394-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-394-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-949-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-949-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-10-04 414-949-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-09-20 414-391-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2011-08-31 414-639-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2011-08-23 414-639-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MILWAUKZN1 WI
2011-08-02 414-399-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-08-02 414-399-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-08-02 414-639-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-07-28 414-394-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-07-28 414-394-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-07-28 414-394-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-07-22 414-435-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MILWAUKZN5 WI
2011-07-11 414-399-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-07-11 414-399-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-28 414-914-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-28 414-914-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-28 414-914-4XXX 4000–4999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-21 414-391-0XXX 0000–0999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-21 414-391-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-21 414-391-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-21 414-391-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-21 414-391-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-16 414-914-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-1XXX 1000–1999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-10 414-388-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-3XXX 3000–3999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-10 414-388-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-10 414-388-9XXX 9000–9999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-03 414-639-0XXX 0000–0999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-03 414-639-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-03 414-639-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-02 414-265-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-06-02 414-274-9XXX 9000–9999Assigned METROPCS, INC. 5562 MILWAUKZN1 WI
2011-06-02 414-792-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2011-05-18 414-239-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2011-05-18 414-244-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2011-05-18 414-286-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F MILWAUKZN1 WI
2011-05-18 414-286-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WI 007F 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.