NumberResearchThousands-blocks in 336-258
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 336-258 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 336 blocks
Most active assignees, all time — NPA 336
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-12-08 | 336-258-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ELKIN | NC |
| — | 336-258-1XXX | 1000–1999 | Available | ELKIN | NC | ||
| 2006-09-08 | 336-258-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ELKIN | NC |
| 2004-03-16 | 336-258-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | ELKIN | NC |
| 2005-04-06 | 336-258-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | ELKIN | NC |
| 2004-03-16 | 336-258-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | ELKIN | NC |
| 2004-03-16 | 336-258-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | ELKIN | NC |
| 2010-07-09 | 336-258-7XXX | 7000–7999 | Assigned | SUNCOM DBA T-MOBILE USA | 8645 | ELKIN | NC |
| 2009-03-13 | 336-258-8XXX | 8000–8999 | Assigned | PIEDMONT COMMUNICATIONS SERVICES, INC. - NC | 035B | ELKIN | NC |
| 2004-03-16 | 336-258-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | ELKIN | NC |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.