NumberResearchThousands-blocks in 878-305
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 878-305 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 878 blocks
Most active assignees, last 30 days — NPA 878
New assignments by month
Sep 2026
Aug 2026
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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-02-26 | 878-305-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
| 2026-04-08 | 878-305-1XXX | 1000–1999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
| 2026-07-30 | 878-305-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
| 2026-09-02 | 878-305-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | ALIQUIPPA | PA |
| 2026-09-09 | 878-305-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
| 2026-09-09 | 878-305-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
| — | 878-305-6XXX | 6000–6999 | Available | ALIQUIPPA | PA | ||
| 2026-08-20 | 878-305-7XXX | 7000–7999 | Assigned | OPENTACT INC. | 824J | ALIQUIPPA | PA |
| 2026-05-22 | 878-305-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ALIQUIPPA | PA |
| 2026-05-06 | 878-305-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | ALIQUIPPA | PA |
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.