NumberResearchThousands-blocks in 276-383
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/21/2026
The ten 1,000-number thousand-blocks inside prefix 276-383 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 276 blocks
Most active assignees, all time — NPA 276
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-03-12 | 276-383-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | ST CHARLES | VA |
| 2009-04-24 | 276-383-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | ST CHARLES | VA |
| 2017-03-21 | 276-383-2XXX | 2000–2999 | Assigned | ONVOY, LLC - VA | 138E | ST CHARLES | VA |
| 2014-05-30 | 276-383-3XXX | 3000–3999 | Assigned | MOUNTAINET TELEPHONE COMPANY - VA | 3185 | ST CHARLES | VA |
| — | 276-383-4XXX | 4000–4999 | Reserved | VERIZON VIRGINIA, INC. | 9213 | ST CHARLES | VA |
| 2019-01-11 | 276-383-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | ST CHARLES | VA |
| 2022-02-09 | 276-383-6XXX | 6000–6999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | ST CHARLES | VA |
| 2014-01-23 | 276-383-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ST CHARLES | VA |
| 2015-12-30 | 276-383-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF VIRGINIA, LLC - VA | 275G | ST CHARLES | VA |
| — | 276-383-9XXX | 9000–9999 | Available | ST CHARLES | VA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.