NumberResearchThousands-blocks in 864-721
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 864-721 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 864 blocks
Most active assignees, all time — NPA 864
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 864-721-0XXX | 0000–0999 | Reserved | PAETEC ITEL, LLC | 829J | LYMAN | SC |
| 2023-09-29 | 864-721-1XXX | 1000–1999 | Assigned | ONVOY, LLC - SC | 548E | LYMAN | SC |
| 2003-06-05 | 864-721-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | LYMAN | SC |
| 2008-09-30 | 864-721-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LYMAN | SC |
| 2010-02-11 | 864-721-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | LYMAN | SC |
| 2010-02-11 | 864-721-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | LYMAN | SC |
| 2018-08-27 | 864-721-6XXX | 6000–6999 | Assigned | ONVOY, LLC - SC | 548E | LYMAN | SC |
| 2015-03-11 | 864-721-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | LYMAN | SC |
| 2014-12-17 | 864-721-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC | 098H | LYMAN | SC |
| 2018-08-27 | 864-721-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SC | 548E | LYMAN | SC |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.