NumberResearchThousands-blocks in 860-420
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 860-420 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 860 blocks
Most active assignees, all time — NPA 860
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 860-420-0XXX | 0000–0999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - CT | 7143 | STORRS | CT |
| 2026-04-27 | 860-420-1XXX | 1000–1999 | Assigned | ONVOY, LLC - CT | 639C | STORRS | CT |
| 2014-10-22 | 860-420-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | STORRS | CT |
| 2015-05-28 | 860-420-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - CT | 199F | STORRS | CT |
| 2008-05-13 | 860-420-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | STORRS | CT |
| 2011-04-14 | 860-420-5XXX | 5000–5999 | Assigned | SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT | 9147 | STORRS | CT |
| 2006-12-01 | 860-420-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | STORRS | CT |
| 2004-12-14 | 860-420-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | STORRS | CT |
| 2003-10-24 | 860-420-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | STORRS | CT |
| 2002-11-14 | 860-420-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | STORRS | CT |
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.