NumberResearchThousands-blocks in 878-332
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 878-332 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2019-01-09 | 878-332-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WEXFORD | PA |
| 2015-08-11 | 878-332-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WEXFORD | PA |
| 2014-01-29 | 878-332-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WEXFORD | PA |
| 2016-11-03 | 878-332-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WEXFORD | PA |
| 2014-02-06 | 878-332-4XXX | 4000–4999 | Assigned | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO | 0193 | WEXFORD | PA |
| 2017-09-13 | 878-332-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WEXFORD | PA |
| 2014-03-14 | 878-332-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | WEXFORD | PA |
| 2015-11-04 | 878-332-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WEXFORD | PA |
| 2018-11-08 | 878-332-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | WEXFORD | PA |
| 2019-06-19 | 878-332-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | WEXFORD | 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.