NumberResearchRecent prefix assignments
375 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
Sep 2026
Aug 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-06-01 | 618-217 | 0–9 XXXall 10 · 6 holders which blocks → | T-MOBILE USA, INC. | 6529 | WOOD RIVER | IL |
| 2017-06-01 | 740-723 | 9XXX which blocks → | WINDSTREAM OHIO, LLC | 0665 | GRATIOT | OH |
| 2017-06-01 | 779-241 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | MORRIS | IL |
| 2017-06-01 | 786-868 | 0–9 XXXall 10 · 4 holders which blocks → | VONAGE AMERICA LLC | 197D | MIAMI | FL |
| 2017-06-01 | 873-733 | not yet reported which blocks → | Iristel Inc. | 154E | Maniwaki | — |
| 2017-06-01 | 937-300 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | EATON | OH |
| 2017-05-30 | 226-459 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Sauble Beach | — |
| 2017-05-30 | 226-495 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Thornbury | — |
| 2017-05-30 | 226-941 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Strathroy | — |
| 2017-05-30 | 226-942 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Parkhill | — |
| 2017-05-30 | 226-943 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Lucan | — |
| 2017-05-30 | 226-944 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Glencoe | — |
| 2017-05-30 | 226-945 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Exeter | — |
| 2017-05-30 | 226-947 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Dorchester | — |
| 2017-05-30 | 226-948 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Belmont | — |
| 2017-05-30 | 226-949 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Wiarton | — |
| 2017-05-30 | 226-951 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Markdale | — |
| 2017-05-30 | 226-952 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Hanover | — |
| 2017-05-30 | 226-953 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Durham | — |
| 2017-05-30 | 226-954 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Chesley | — |
| 2017-05-30 | 226-955 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Chatsworth | — |
| 2017-05-30 | 249-214 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Verner | — |
| 2017-05-30 | 249-215 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Sturgeon Falls | — |
| 2017-05-30 | 249-957 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Echo Bay | — |
| 2017-05-30 | 249-960 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Elliot Lake | — |
| 2017-05-30 | 249-961 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Goulais | — |
| 2017-05-30 | 249-962 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Iron Bridge | — |
| 2017-05-30 | 249-963 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | St. Joseph Island | — |
| 2017-05-30 | 249-964 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Thessalon | — |
| 2017-05-30 | 249-965 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bonfield | — |
| 2017-05-30 | 249-966 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Mattawa | — |
| 2017-05-30 | 249-967 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Port Loring | — |
| 2017-05-30 | 249-968 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Powassan | — |
| 2017-05-30 | 249-974 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Blind River | — |
| 2017-05-30 | 249-975 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bruce Mines | — |
| 2017-05-30 | 727-256 | 0–9 XXXall 10 · 3 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - FL | 8300 | STPETERSBG | FL |
| 2017-05-30 | 901-501 | 0–9 XXXall 10 · 5 holders which blocks → | COMMIO, LLC | 939H | MEMPHIS | TN |
| 2017-05-29 | 343-305 | not yet reported which blocks → | Iristel Inc. | 154E | Kingston | — |
| 2017-05-29 | 343-306 | not yet reported which blocks → | Iristel Inc. | 154E | Kingston | — |
| 2017-05-29 | 579-501 | not yet reported which blocks → | Iristel Inc. | 154E | Joliette | — |
| 2017-05-29 | 587-554 | not yet reported which blocks → | TELUS | 8084 | Medicine Hat | — |
| 2017-05-29 | 647-576 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Toronto | — |
| 2017-05-26 | 249-806 | not yet reported which blocks → | Iristel Inc. | 154E | Sudbury | — |
| 2017-05-26 | 289-367 | not yet reported which blocks → | Iristel Inc. | 154E | Oshawa | — |
| 2017-05-26 | 343-529 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Plantagenet | — |
| 2017-05-26 | 343-530 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Richmond | — |
| 2017-05-26 | 343-531 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Rockland | — |
| 2017-05-26 | 343-532 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Winchester | — |
| 2017-05-26 | 343-533 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Clarence Creek | — |
| 2017-05-26 | 343-534 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Crysler | — |
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.