NumberResearchThousands-blocks in 973-528
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 973-528 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 973 blocks
Most active assignees, all time — NPA 973
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 973-528-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | BELLEVILLE | NJ |
| 2016-03-07 | 973-528-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NJ | 637C | BELLEVILLE | NJ |
| 2007-03-30 | 973-528-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | BELLEVILLE | NJ |
| 2021-02-10 | 973-528-3XXX | 3000–3999 | Assigned | ONVOY, LLC - NJ | 637C | BELLEVILLE | NJ |
| 2023-09-18 | 973-528-4XXX | 4000–4999 | Assigned | ONVOY, LLC - NJ | 637C | BELLEVILLE | NJ |
| 2020-10-15 | 973-528-5XXX | 5000–5999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | BELLEVILLE | NJ |
| 2013-09-13 | 973-528-6XXX | 6000–6999 | Assigned | ONVOY, LLC - NJ | 637C | BELLEVILLE | NJ |
| 2016-03-07 | 973-528-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | BELLEVILLE | NJ |
| 2013-03-29 | 973-528-8XXX | 8000–8999 | Assigned | PEERLESS NETWORK OF NEW JERSEY, LLC - NJ | 264F | BELLEVILLE | NJ |
| 2024-12-02 | 973-528-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | BELLEVILLE | NJ |
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.