NumberResearchThousands-blocks in 508-812
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 508-812 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
Sep 2026
Aug 2026
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Jun 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-11-10 | 508-812-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | NO SWANSEA | MA |
| 2024-01-03 | 508-812-1XXX | 1000–1999 | Assigned | TERRA NOVA TELECOM INC. | 145J | NO SWANSEA | MA |
| 2013-04-08 | 508-812-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA | 268F | NO SWANSEA | MA |
| 2006-09-20 | 508-812-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | NO SWANSEA | MA |
| 2004-08-18 | 508-812-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | NO SWANSEA | MA |
| 2006-04-28 | 508-812-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | NO SWANSEA | MA |
| — | 508-812-6XXX | 6000–6999 | Available | NO SWANSEA | MA | ||
| 2012-02-21 | 508-812-7XXX | 7000–7999 | Assigned | ONVOY, LLC - MA | 892D | NO SWANSEA | MA |
| 2010-07-28 | 508-812-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | NO SWANSEA | MA |
| 2012-12-12 | 508-812-9XXX | 9000–9999 | Assigned | ONVOY, LLC - MA | 892D | NO SWANSEA | 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.