NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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, all time — NPA 413
TWC IP ENABLED SERVICES, LLC 31
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2025-10-07 413-337-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K CHARLEMONT MA
2025-10-07 413-625-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SHELBUNFLS MA
2024-01-29 413-646-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K MILLERSFLS MA
2022-10-18 413-933-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K MONROE BDG MA
2021-12-09 413-616-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K OTIS MA
2021-11-22 413-462-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SANDISFLD MA
2020-08-18 413-738-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K HANCOCK MA
2020-06-12 413-380-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K RICHMOND MA
2020-02-20 413-655-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K HINSDALE MA
2016-10-07 413-347-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K PITTSFIELD MA
2015-07-15 413-344-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K PITTSFIELD MA
2010-10-12 413-300-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DALTON MA
2010-10-05 413-248-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K SHEFFIELD MA
2010-10-05 413-394-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LEE MA
2010-10-05 413-398-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K NORTHADAMS MA
2010-10-05 413-458-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K WILLIAMSTN MA
2010-10-05 413-645-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K GREATBNGTN MA
2010-10-05 413-749-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K ADAMS MA
2010-10-05 413-881-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LENOX MA
2010-10-04 413-344-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K PITTSFIELD MA
2008-02-04 413-464-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K PITTSFIELD MA
2008-02-04 413-464-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K PITTSFIELD MA
2007-05-10 413-274-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K HOUSATONIC MA
2007-05-10 413-298-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K STOCKBDG MA
2006-09-22 413-464-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K PITTSFIELD MA
2006-08-18 413-394-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LEE MA
2006-08-18 413-717-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K GREATBNGTN MA
2006-08-18 413-776-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K ADAMS MA
2006-08-14 413-346-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K NORTHADAMS MA
2006-08-14 413-551-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K LENOX MA
2006-08-14 413-884-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K WILLIAMSTN MA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.