NumberResearchThousands-blocks in 813-658
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 813-658 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 813 blocks
Most active assignees, all time — NPA 813
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-03-11 | 813-658-0XXX | 0000–0999 | Assigned | YMAX COMMUNICATIONS CORP. - FL | 594D | TAMPASTH | FL |
| — | 813-658-1XXX | 1000–1999 | Reserved | PAETEC ITEL, LLC | 829J | TAMPASTH | FL |
| — | 813-658-2XXX | 2000–2999 | Reserved | PAETEC ITEL, LLC | 829J | TAMPASTH | FL |
| — | 813-658-3XXX | 3000–3999 | Reserved | PAETEC ITEL, LLC | 829J | TAMPASTH | FL |
| — | 813-658-4XXX | 4000–4999 | Reserved | PAETEC ITEL, LLC | 829J | TAMPASTH | FL |
| 2006-04-27 | 813-658-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - FL | 4802 | TAMPASTH | FL |
| 2008-03-20 | 813-658-6XXX | 6000–6999 | Assigned | MCI WORLDCOM COMMUNICATIONS, INC. - FL | 7448 | TAMPASTH | FL |
| 2004-02-09 | 813-658-7XXX | 7000–7999 | Assigned | LINGO TELECOM, LLC | 3840 | TAMPASTH | FL |
| 2010-07-15 | 813-658-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - FL | 982E | TAMPASTH | FL |
| 2009-03-11 | 813-658-9XXX | 9000–9999 | Assigned | YMAX COMMUNICATIONS CORP. - FL | 594D | TAMPASTH | FL |
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.