NumberResearchThousands-blocks in 724-756
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
The ten 1,000-number thousand-blocks inside prefix 724-756 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 724 blocks
Most active assignees, all time — NPA 724
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 724-756-0XXX | 0000–0999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PETROLIA | PA |
| — | 724-756-1XXX | 1000–1999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PETROLIA | PA |
| — | 724-756-2XXX | 2000–2999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PETROLIA | PA |
| — | 724-756-3XXX | 3000–3999 | Available | PETROLIA | PA | ||
| 2006-10-11 | 724-756-4XXX | 4000–4999 | Assigned | ARMSTRONG TELECOMMUNICATIONS, INC. - PA | 422C | PETROLIA | PA |
| 2025-07-09 | 724-756-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | PETROLIA | PA |
| 2004-04-05 | 724-756-6XXX | 6000–6999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PETROLIA | PA |
| 2015-05-13 | 724-756-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PETROLIA | PA |
| 2018-06-14 | 724-756-8XXX | 8000–8999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PETROLIA | PA |
| — | 724-756-9XXX | 9000–9999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | PETROLIA | PA |
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.