NumberResearchThousands-blocks in 518-712
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 518-712 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 518 blocks
Most active assignees, all time — NPA 518
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-07-07 | 518-712-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | AVERILL PK | NY |
| 2012-12-12 | 518-712-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | AVERILL PK | NY |
| 2012-07-27 | 518-712-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | AVERILL PK | NY |
| 2005-12-08 | 518-712-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | AVERILL PK | NY |
| 2004-06-17 | 518-712-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | AVERILL PK | NY |
| 2005-09-23 | 518-712-5XXX | 5000–5999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | AVERILL PK | NY |
| 2012-03-05 | 518-712-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | AVERILL PK | NY |
| 2010-02-01 | 518-712-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | AVERILL PK | NY |
| — | 518-712-8XXX | 8000–8999 | Reserved | TVC ALBANY, INC. DBA FIRSTLIGHT FIBER | 7989 | AVERILL PK | NY |
| 2008-12-29 | 518-712-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | AVERILL PK | 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.