NumberResearchThousands-blocks in 310-272
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 310-272 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 310 blocks
Most active assignees, all time — NPA 310
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-01-07 | 310-272-0XXX | 0000–0999 | Assigned | METROPCS NETWORKS, LLC | 899D | BEVERLYHLS | CA |
| 2008-01-30 | 310-272-1XXX | 1000–1999 | Assigned | PACIFIC BELL | 9740 | BEVERLYHLS | CA |
| 2007-12-20 | 310-272-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | BEVERLYHLS | CA |
| 2004-03-01 | 310-272-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2004-03-01 | 310-272-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2011-04-12 | 310-272-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | BEVERLYHLS | CA |
| 2004-09-15 | 310-272-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BEVERLYHLS | CA |
| 2008-02-08 | 310-272-7XXX | 7000–7999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | BEVERLYHLS | CA |
| 2009-05-21 | 310-272-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | BEVERLYHLS | CA |
| 2008-02-15 | 310-272-9XXX | 9000–9999 | Assigned | ONVOY, LLC - CA | 649C | BEVERLYHLS | CA |
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.