NumberResearchThousands-blocks in 631-318
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 631-318 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 |
|---|---|---|---|---|---|---|---|
| 2012-06-07 | 631-318-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | AMAGANSETT | NY |
| 2012-01-30 | 631-318-1XXX | 1000–1999 | Assigned | TELENGY L.L.C. - NY | 473G | AMAGANSETT | NY |
| 2013-03-28 | 631-318-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | AMAGANSETT | NY |
| 2010-01-29 | 631-318-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | AMAGANSETT | NY |
| 2012-03-05 | 631-318-4XXX | 4000–4999 | Assigned | ONVOY, LLC- NY | 384C | AMAGANSETT | NY |
| 2014-04-03 | 631-318-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AMAGANSETT | NY |
| 2015-11-25 | 631-318-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | AMAGANSETT | NY |
| 2012-10-22 | 631-318-7XXX | 7000–7999 | Assigned | ONVOY, LLC- NY | 384C | AMAGANSETT | NY |
| 2012-03-12 | 631-318-8XXX | 8000–8999 | Assigned | ONVOY, LLC- NY | 384C | AMAGANSETT | NY |
| 2013-03-28 | 631-318-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | AMAGANSETT | 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.