NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 772-577

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 772-577 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 772 blocks

Most active assignees, all time — NPA 772
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 4
ONVOY, LLC - FL 2
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 1
LEVEL 3 COMMUNICATIONS, LLC - FL 1
COMCAST IP PHONE, LLC 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
— 772-577-0XXX 0000–0999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORTPIERCE FL
— 772-577-1XXX 1000–1999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORTPIERCE FL
2012-11-26 772-577-2XXX 2000–2999Assigned ONVOY, LLC - FL 937C FORTPIERCE FL
2011-09-15 772-577-3XXX 3000–3999Assigned ONVOY, LLC - FL 937C FORTPIERCE FL
2014-07-21 772-577-4XXX 4000–4999Assigned AT&T ENTERPRISES, LLC 516C FORTPIERCE FL
2008-04-04 772-577-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 FORTPIERCE FL
2012-10-23 772-577-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J FORTPIERCE FL
2012-11-08 772-577-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - FL 4802 FORTPIERCE FL
— 772-577-8XXX 8000–8999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORTPIERCE FL
— 772-577-9XXX 9000–9999Reserved CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FORTPIERCE FL

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.