NumberResearchThousands-blocks in 508-906
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 508-906 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 508 blocks
Most active assignees, all time — NPA 508
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2002-09-25 | 508-906-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | MEDFIELD | MA |
| 2008-07-21 | 508-906-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | MEDFIELD | MA |
| 2006-10-03 | 508-906-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | MEDFIELD | MA |
| 2007-08-27 | 508-906-3XXX | 3000–3999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MEDFIELD | MA |
| 2007-04-09 | 508-906-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFIELD | MA |
| 2012-02-21 | 508-906-5XXX | 5000–5999 | Assigned | ONVOY, LLC - MA | 892D | MEDFIELD | MA |
| — | 508-906-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFIELD | MA |
| 2009-12-14 | 508-906-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | MEDFIELD | MA |
| 2009-12-14 | 508-906-8XXX | 8000–8999 | Assigned | ONVOY, LLC - MA | 892D | MEDFIELD | MA |
| — | 508-906-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFIELD | MA |
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.