NumberResearchThousands-blocks in 803-223
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 803-223 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 803 blocks
Most active assignees, all time — NPA 803
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 803-223-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA SC- LLC | 635C | COLUMBIA | SC |
| 2005-05-24 | 803-223-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | COLUMBIA | SC |
| 2005-05-09 | 803-223-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | COLUMBIA | SC |
| 2005-06-08 | 803-223-3XXX | 3000–3999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | COLUMBIA | SC |
| 2005-08-19 | 803-223-4XXX | 4000–4999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | COLUMBIA | SC |
| 2005-11-14 | 803-223-5XXX | 5000–5999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | COLUMBIA | SC |
| 2006-02-03 | 803-223-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | COLUMBIA | SC |
| 2012-08-03 | 803-223-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | COLUMBIA | SC |
| 2005-11-11 | 803-223-8XXX | 8000–8999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | COLUMBIA | SC |
| 2006-10-11 | 803-223-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | COLUMBIA | 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.