NumberResearchThousands-blocks in 878-837
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 878-837 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, all time — NPA 878
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-06-14 | 878-837-0XXX | 0000–0999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | BENTLEYVL | PA |
| 2025-09-16 | 878-837-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | BENTLEYVL | PA |
| 2026-05-29 | 878-837-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | BENTLEYVL | PA |
| — | 878-837-3XXX | 3000–3999 | Available | BENTLEYVL | PA | ||
| 2019-03-19 | 878-837-4XXX | 4000–4999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | BENTLEYVL | PA |
| — | 878-837-5XXX | 5000–5999 | Available | BENTLEYVL | PA | ||
| 2021-01-26 | 878-837-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | BENTLEYVL | PA |
| 2022-06-09 | 878-837-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | BENTLEYVL | PA |
| 2021-05-18 | 878-837-8XXX | 8000–8999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | BENTLEYVL | PA |
| 2026-02-17 | 878-837-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | BENTLEYVL | PA |
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.