NumberResearchThousands-blocks in 872-340
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 872-340 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 872 blocks
Most active assignees, all time — NPA 872
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-12-15 | 872-340-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-09-27 | 872-340-1XXX | 1000–1999 | Assigned | WIDE VOICE, LLC - IL | 395H | CHICGOZN04 | IL |
| 2023-09-27 | 872-340-2XXX | 2000–2999 | Assigned | HD CARRIER LLC | 321J | CHICGOZN04 | IL |
| 2024-10-14 | 872-340-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | CHICGOZN04 | IL |
| — | 872-340-4XXX | 4000–4999 | Available | CHICGOZN04 | IL | ||
| 2024-01-04 | 872-340-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2024-01-04 | 872-340-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2023-12-15 | 872-340-7XXX | 7000–7999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-12-15 | 872-340-8XXX | 8000–8999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
| 2023-12-15 | 872-340-9XXX | 9000–9999 | Assigned | ONVOY, LLC | 224C | CHICGOZN04 | IL |
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.