NumberResearchThousands-blocks in 631-489
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 631-489 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 631 blocks
Most active assignees, all time — NPA 631
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 631-489-0XXX | 0000–0999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | W COMMACK | NY |
| — | 631-489-1XXX | 1000–1999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | W COMMACK | NY |
| 2025-12-17 | 631-489-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | W COMMACK | NY |
| 2023-07-12 | 631-489-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | W COMMACK | NY |
| 2019-05-06 | 631-489-4XXX | 4000–4999 | Assigned | CORETEL NEW YORK, INC. - NY | 1215 | W COMMACK | NY |
| 2003-05-16 | 631-489-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | W COMMACK | NY |
| 2023-07-12 | 631-489-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | W COMMACK | NY |
| 2023-07-12 | 631-489-7XXX | 7000–7999 | Assigned | ONVOY, LLC- NY | 384C | W COMMACK | NY |
| 2012-02-29 | 631-489-8XXX | 8000–8999 | Assigned | ONVOY, LLC- NY | 384C | W COMMACK | NY |
| — | 631-489-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | W COMMACK | NY |
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.