NumberResearchRecent prefix assignments
2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 949-951 | not yet reported which blocks → | PACIFIC BELL | 9740 | SADLBK VLY | CA |
| — | 949-955 | not yet reported which blocks → | PACIFIC BELL | 9740 | IRVINE | CA |
| — | 949-958 | not yet reported which blocks → | CA | |||
| — | 949-959 | not yet reported which blocks → | CA | |||
| — | 949-963 | not yet reported which blocks → | NORTH COUNTY COMMUNICATION CORPORATION - CA | 7894 | SADLBK VLY | CA |
| — | 949-975 | 9XXX which blocks → | PACIFIC BELL | 9740 | IRVINE | CA |
| — | 949-976 | not yet reported which blocks → | CA | |||
| — | 949-977 | not yet reported which blocks → | PACIFIC BELL | 9740 | IRVINE | CA |
| — | 949-988 | 0–9 XXXall 10 · 5 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | IRVINE | CA |
| — | 949-999 | not yet reported which blocks → | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NEWPORTBCH | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.