NumberResearchThousands-blocks in 973-435
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 973-435 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 |
|---|---|---|---|---|---|---|---|
| 2014-12-17 | 973-435-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | LITTLE FLS | NJ |
| 2015-02-23 | 973-435-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LITTLE FLS | NJ |
| 2005-12-07 | 973-435-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | LITTLE FLS | NJ |
| — | 973-435-3XXX | 3000–3999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LITTLE FLS | NJ |
| 2010-10-26 | 973-435-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | LITTLE FLS | NJ |
| 2020-12-29 | 973-435-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | LITTLE FLS | NJ |
| 2011-10-14 | 973-435-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | LITTLE FLS | NJ |
| 2014-10-28 | 973-435-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NJ | 637C | LITTLE FLS | NJ |
| 2012-05-23 | 973-435-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | LITTLE FLS | NJ |
| — | 973-435-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LITTLE FLS | 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.