NumberResearchThousands-blocks in 631-534
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 631-534 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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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 631-534-0XXX | 0000–0999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPGHBR | NY |
| 2026-01-28 | 631-534-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | COLDSPGHBR | NY |
| 2019-05-06 | 631-534-2XXX | 2000–2999 | Assigned | CORETEL NEW YORK, INC. - NY | 1215 | COLDSPGHBR | NY |
| 2023-08-24 | 631-534-3XXX | 3000–3999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | COLDSPGHBR | NY |
| — | 631-534-4XXX | 4000–4999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPGHBR | NY |
| — | 631-534-5XXX | 5000–5999 | Available | COLDSPGHBR | NY | ||
| — | 631-534-6XXX | 6000–6999 | Available | COLDSPGHBR | NY | ||
| 2010-07-07 | 631-534-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | COLDSPGHBR | NY |
| — | 631-534-8XXX | 8000–8999 | Available | COLDSPGHBR | NY | ||
| — | 631-534-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPGHBR | 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.