NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 510-982

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 510-982 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 510 blocks

Most active assignees, all time — NPA 510
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 3
BANDWIDTH.COM CLEC, LLC - CA 3
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 2
ONVOY, LLC - CA 1
METROPCS, INC. 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
— 510-982-0XXX 0000–0999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 OKLD BKLY CA
2011-04-12 510-982-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD BKLY CA
2012-02-29 510-982-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C OKLD BKLY CA
— 510-982-3XXX 3000–3999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 OKLD BKLY CA
— 510-982-4XXX 4000–4999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 OKLD BKLY CA
2013-03-01 510-982-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD BKLY CA
2010-11-16 510-982-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E OKLD BKLY CA
2001-07-04 510-982-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J OKLD BKLY CA
2001-07-04 510-982-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J OKLD BKLY CA
2011-02-28 510-982-9XXX 9000–9999Assigned METROPCS, INC. 5562 OKLD BKLY CA

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.