NumberResearchThousands-blocks in 878-205
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 878-205 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
Jul 2026
Jun 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-01-11 | 878-205-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | CONNELLSVL | PA |
| 2016-05-03 | 878-205-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CONNELLSVL | PA |
| 2018-01-30 | 878-205-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | CONNELLSVL | PA |
| 2024-09-06 | 878-205-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CONNELLSVL | PA |
| 2026-09-14 | 878-205-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | CONNELLSVL | PA |
| 2025-03-10 | 878-205-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | CONNELLSVL | PA |
| 2026-01-08 | 878-205-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CONNELLSVL | PA |
| 2016-09-06 | 878-205-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CONNELLSVL | PA |
| 2018-08-20 | 878-205-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | CONNELLSVL | PA |
| 2017-07-25 | 878-205-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CONNELLSVL | 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.