NumberResearchThousands-blocks in 973-433
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 973-433 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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2007-11-08 | 973-433-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | VERONA | NJ |
| 2002-03-01 | 973-433-1XXX | 1000–1999 | Assigned | COOPERATIVE COMMUNICATIONS, INC. | 8407 | VERONA | NJ |
| 2002-04-16 | 973-433-2XXX | 2000–2999 | Assigned | MONMOUTH TELEPHONE AND TELEGRAPH, INC. - NJ | 3639 | VERONA | NJ |
| 2003-05-01 | 973-433-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | VERONA | NJ |
| 2003-01-16 | 973-433-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | VERONA | NJ |
| 2010-09-13 | 973-433-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | VERONA | NJ |
| 2008-11-07 | 973-433-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NJ | 118F | VERONA | NJ |
| 2005-04-25 | 973-433-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | VERONA | NJ |
| 2002-03-01 | 973-433-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 7142 | VERONA | NJ |
| — | 973-433-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | VERONA | 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.