NumberResearchRecent prefix assignments
372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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.
Most active assignees, last 30 days
New assignments by month
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Nov 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 513-948 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-950 | not yet reported which blocks → | OH | |||
| — | 513-951 | 0–9 XXXall 10 · 4 holders which blocks → | BARR TELL USA | 907J | HARRISON | OH |
| — | 513-954 | 0–9 XXXall 10 · 5 holders which blocks → | METROPCS, INC. | 5562 | CINCINNATI | OH |
| — | 513-956 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-958 | not yet reported which blocks → | OH | |||
| — | 513-959 | not yet reported which blocks → | OH | |||
| — | 513-961 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-965 | 1XXX which blocks → | CINCINNATI BELL | 9348 | LTL MIAMI | OH |
| — | 513-966 | 0–9 XXXall 10 · 5 holders which blocks → | TELNYX LLC | 073H | LTL MIAMI | OH |
| — | 513-967 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | CINCINNATI | OH |
| — | 513-969 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH | 6025 | CINCINNATI | OH |
| — | 513-971 | not yet reported which blocks → | SPOK, INC. | 6630 | CINCINNATI | OH |
| — | 513-976 | not yet reported which blocks → | OH | |||
| — | 513-977 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-979 | 4XXX7XXX8XXX9XXX · 2 holders which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-981 | 1XXX8XXX9XXX which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-983 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-984 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-985 | not yet reported which blocks → | CINCINNATI BELL | 9348 | CINCINNATI | OH |
| — | 513-988 | 3XXX4XXX7XXX8XXX · 3 holders which blocks → | OHIO BELL TEL CO | 9321 | TRENTON | OH |
| — | 514-201 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-202 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-203 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-204 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-205 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-212 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-213 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-215 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-217 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-218 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-221 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-223 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Montreal | — |
| — | 514-230 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-231 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-232 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-233 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-234 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-235 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-236 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-237 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-238 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-239 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-240 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| — | 514-241 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| — | 514-242 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| — | 514-243 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| — | 514-249 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| — | 514-251 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
| — | 514-252 | not yet reported which blocks → | Bell Canada | 8050 | Montreal | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.