NumberResearchThousands-blocks in 703-646
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 703-646 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 703 blocks
Most active assignees, all time — NPA 703
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-06-04 | 703-646-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | LORTON | VA |
| 2012-11-07 | 703-646-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | LORTON | VA |
| 2009-09-28 | 703-646-2XXX | 2000–2999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | LORTON | VA |
| 2009-09-28 | 703-646-3XXX | 3000–3999 | Assigned | YMAX COMMUNICATIONS CORP. OF VIRGINIA - VA | 367E | LORTON | VA |
| 2007-02-14 | 703-646-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | LORTON | VA |
| 2004-02-06 | 703-646-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | LORTON | VA |
| 2012-03-07 | 703-646-6XXX | 6000–6999 | Assigned | ONVOY, LLC - VA | 138E | LORTON | VA |
| 2010-06-28 | 703-646-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | LORTON | VA |
| 2010-07-14 | 703-646-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - VA | 079F | LORTON | VA |
| — | 703-646-9XXX | 9000–9999 | Reserved | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LORTON | VA |
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.