NumberResearchRecent prefix assignments
355 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.
Most active assignees, last 30 days
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 | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2001-10-02 | 512-786 | none assigned yet which blocks → | T-MOBILE USA, INC. | 6529 | AUSTIN | TX |
| 2001-10-02 | 651-330 | not yet reported which blocks → | COMCAST IP PHONE, LLC | 318J | TWINCITIES | MN |
| 2001-10-02 | 732-756 | 0XXX1XXX9XXX · 2 holders which blocks → | VERIZON NEW JERSEY, INC. | 9206 | DUNELLEN | NJ |
| 2001-10-02 | 757-584 | not yet reported which blocks → | SPOK, INC. | 6630 | NWPTNWSZN3 | VA |
| 2001-10-02 | 780-868 | not yet reported which blocks → | TELUS Mobility | 8301 | Edmonton | — |
| 2001-10-02 | 806-543 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | LUBBOCK | TX |
| 2001-10-02 | 817-537 | 2XXX3XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLAS | TX |
| 2001-10-02 | 817-576 | 1XXX2XXX3XXX4XXX6XXX8XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | NRICHLDHLS | TX |
| 2001-10-02 | 817-693 | 1XXX2XXX3XXX4XXX6XXX8XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | ROANOKE | TX |
| 2001-10-02 | 817-796 | 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRAPEVINE | TX |
| 2001-10-02 | 905-818 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2001-10-02 | 919-822 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | WENDELL | NC |
| 2001-10-02 | 919-823 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ZEBULON | NC |
| 2001-10-02 | 919-944 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | KNIGHTDALE | NC |
| 2001-10-02 | 920-397 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FTATKINSON | WI |
| 2001-10-02 | 979-398 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | WALLIS | TX |
| 2001-10-02 | 985-603 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | NORCO | LA |
| 2001-10-02 | 985-628 | 5XXX which blocks → | VOICESTREAM GSM I, LLC | 150C | HOUMA | LA |
| 2001-10-02 | 985-710 | 5XXX7XXX8XXX which blocks → | VOICESTREAM GSM I, LLC | 150C | SLIDELL | LA |
| 2001-10-02 | 985-956 | 3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → | VOICESTREAM GSM I, LLC | 150C | HAMMOND | LA |
| 2001-10-01 | 248-724 | 6XXX8XXX which blocks → | 123.NET, LLC | 2550 | PONTIAC | MI |
| 2001-10-01 | 248-739 | 3XXX4XXX5XXX7XXX8XXX which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | W BLOOMFLD | MI |
| 2001-10-01 | 248-807 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | HOLLY | MI |
| 2001-10-01 | 248-918 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | TROY | MI |
| 2001-10-01 | 401-499 | not yet reported which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PROVIDENCE | RI |
| 2001-10-01 | 416-629 | not yet reported which blocks → | TELUS Mobility | 8303 | Toronto | — |
| 2001-10-01 | 419-210 | 1XXX2XXX3XXX5XXX8XXX9XXX · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | MT GILEAD | OH |
| 2001-10-01 | 506-210 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Miramichi | — |
| 2001-10-01 | 506-212 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Richibucto | — |
| 2001-10-01 | 506-481 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Grand Falls | — |
| 2001-10-01 | 517-303 | 2XXX7XXX8XXX which blocks → | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | LANSING | MI |
| 2001-10-01 | 517-416 | 8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | 6003 | JACKSON | MI |
| 2001-10-01 | 517-995 | 1XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | ACD TELECOM, INC. - MI | 3535 | JONESVILLE | MI |
| 2001-10-01 | 613-866 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ottawa-Hull | — |
| 2001-10-01 | 613-867 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ottawa-Hull | — |
| 2001-10-01 | 617-777 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BOSTON | MA |
| 2001-10-01 | 787-458 | not yet reported which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | MAYAGUEZ | PR |
| 2001-10-01 | 802-274 | 1XXX2XXX3XXX5XXX6XXX7XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VT | 6390 | ST JOHNSBY | VT |
| 2001-10-01 | 845-598 | 9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NANUET | NY |
| 2001-10-01 | 864-386 | 3XXX4XXX5XXX7XXX8XXX which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | GREENVILLE | SC |
| 2001-10-01 | 905-256 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Malton | — |
| 2001-10-01 | 910-379 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | CLINTON | NC |
| 2001-10-01 | 910-978 | not yet reported which blocks → | SUNCOM DBA T-MOBILE USA | 8645 | FAYETTEVL | NC |
| 2001-10-01 | 978-899 | 1XXX8XXX9XXX · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | LITTLETON | MA |
| 2001-09-29 | 216-355 | not yet reported which blocks → | T-MOBILE USA, INC. | 6529 | INDEPNDNCE | OH |
| 2001-09-28 | 205-409 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | TUSCALOOSA | AL |
| 2001-09-28 | 205-413 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - AL | 5255 | BIRMINGHAM | AL |
| 2001-09-28 | 205-415 | 2XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | POWERTEL BIRMINGHAM LICENSES, INC. | 7475 | CLANTON | AL |
| 2001-09-28 | 217-819 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | CHAMPAURBN | IL |
| 2001-09-28 | 253-394 | 1XXX2XXX3XXX4XXX6XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | AUBURN | WA |
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.