NumberResearchThousands-blocks in 813-953
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 813-953 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-08-06 | 813-953-0XXX | 0000–0999 | Assigned | ONVOY, LLC - FL | 937C | TAMPANTH | FL |
| 2017-01-27 | 813-953-1XXX | 1000–1999 | Assigned | BHN IP ENABLED SERVICES, LLC | 045L | TAMPANTH | FL |
| 2017-02-28 | 813-953-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | TAMPANTH | FL |
| 2017-02-28 | 813-953-3XXX | 3000–3999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | TAMPANTH | FL |
| 2017-02-08 | 813-953-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | TAMPANTH | FL |
| 2017-03-14 | 813-953-5XXX | 5000–5999 | Assigned | TELNYX LLC | 073H | TAMPANTH | FL |
| 2019-06-18 | 813-953-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | TAMPANTH | FL |
| 2018-02-27 | 813-953-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | TAMPANTH | FL |
| 2017-03-01 | 813-953-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | TAMPANTH | FL |
| 2016-12-09 | 813-953-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | TAMPANTH | FL |
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.