NumberResearchThousands-blocks in 724-735
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 724-735 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 724-735-0XXX | 0000–0999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | HARRISVL | PA |
| 2021-04-01 | 724-735-1XXX | 1000–1999 | Assigned | ONVOY, LLC - PA | 547E | HARRISVL | PA |
| — | 724-735-2XXX | 2000–2999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | HARRISVL | PA |
| 2004-04-02 | 724-735-3XXX | 3000–3999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | HARRISVL | PA |
| — | 724-735-4XXX | 4000–4999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | HARRISVL | PA |
| 2005-04-12 | 724-735-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HARRISVL | PA |
| 2007-08-10 | 724-735-6XXX | 6000–6999 | Assigned | ARMSTRONG TELECOMMUNICATIONS, INC. - PA | 422C | HARRISVL | PA |
| 2015-05-14 | 724-735-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | HARRISVL | PA |
| 2020-02-03 | 724-735-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | HARRISVL | PA |
| — | 724-735-9XXX | 9000–9999 | Reserved | BRIGHTSPEED OF PENNSYLVANIA, LLC | 0209 | HARRISVL | 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.