NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 714-763

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 714-763 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 714 blocks

Most active assignees, all time — NPA 714
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 5
TELEPORT COMMUNICATIONS AMERICA, LLC - CA 2
T-MOBILE USA, INC. 1
PAETEC ITEL, LLC 1
LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 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
— 714-763-0XXX 0000–0999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CYPRESS CA
— 714-763-1XXX 1000–1999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CYPRESS CA
— 714-763-2XXX 2000–2999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CYPRESS CA
— 714-763-3XXX 3000–3999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CYPRESS CA
2005-09-16 714-763-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J CYPRESS CA
2006-12-11 714-763-5XXX 5000–5999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 CYPRESS CA
2014-01-09 714-763-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CYPRESS CA
2006-09-17 714-763-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CYPRESS CA
2006-09-17 714-763-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CYPRESS CA
— 714-763-9XXX 9000–9999Reserved MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CYPRESS 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.