NumberResearchThousands-blocks in 973-529
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 973-529 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 |
|---|---|---|---|---|---|---|---|
| — | 973-529-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | NETCONG | NJ |
| 2021-01-25 | 973-529-1XXX | 1000–1999 | Assigned | ONVOY SPECTRUM, LLC | 624H | NETCONG | NJ |
| 2014-06-23 | 973-529-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | NETCONG | NJ |
| 2015-08-07 | 973-529-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | NETCONG | NJ |
| 2015-01-15 | 973-529-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 6391 | NETCONG | NJ |
| 2018-02-28 | 973-529-5XXX | 5000–5999 | Assigned | CABLEVISION LIGHTPATH, INC. - NJ | 4948 | NETCONG | NJ |
| 2015-04-03 | 973-529-6XXX | 6000–6999 | Assigned | LEVEL 3 TELECOM OF NEW JERSEY, LP - NJ | 2771 | NETCONG | NJ |
| 2014-02-18 | 973-529-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NETCONG | NJ |
| 2013-11-13 | 973-529-8XXX | 8000–8999 | Assigned | ONVOY, LLC - NJ | 637C | NETCONG | NJ |
| 2015-02-23 | 973-529-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | NETCONG | NJ |
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.