NumberResearchRecent prefix assignments
349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
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
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-05-31 | 775-229 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | RENO | NV |
| 2005-05-31 | 775-990 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | PAHRUMP | NV |
| 2005-05-31 | 804-381 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - VA | 8825 | RICHMOND | VA |
| 2005-05-31 | 912-362 | 4XXX6XXX7XXX8XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | METTER | GA |
| 2005-05-31 | 989-945 | 0–9 XXXall 10 · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MI | 6120 | OVID | MI |
| 2005-05-30 | 519-207 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. Thomas | — |
| 2005-05-30 | 709-641 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Stephenville | — |
| 2005-05-30 | 709-787 | not yet reported which blocks → | Aliant Telecom (NF) | 8085 | Bay Roberts | — |
| 2005-05-30 | 780-651 | not yet reported which blocks → | Bell West Inc. | 2933 | St. Albert | — |
| 2005-05-27 | 240-821 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | WSHNGTNZN3 | MD |
| 2005-05-27 | 317-688 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CARMEL | IN |
| 2005-05-27 | 514-477 | not yet reported which blocks → | TELUS Quebec | 2243 | Ile-Perrot | — |
| 2005-05-27 | 519-205 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Strathroy | — |
| 2005-05-27 | 519-206 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. Jacobs | — |
| 2005-05-27 | 519-208 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kitchener-Waterloo | — |
| 2005-05-27 | 519-210 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Elmira | — |
| 2005-05-27 | 519-213 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Breslau | — |
| 2005-05-27 | 519-214 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Baden | — |
| 2005-05-27 | 519-279 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Kitchener-Waterloo | — |
| 2005-05-27 | 605-878 | not yet reported which blocks → | MIDCONTINENT COMMUNICATIONS. - SD | 7076 | WATERTOWN | SD |
| 2005-05-27 | 918-987 | 0XXX1XXX9XXX · 2 holders which blocks → | CENTRAL CELLULAR L.L.C. DBA COTC CONNECTIONS - OK | 094B | STROUD | OK |
| 2005-05-26 | 321-525 | 0–9 XXXall 10 · 4 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | COCOA | FL |
| 2005-05-26 | 480-544 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PHOENIX | AZ |
| 2005-05-26 | 519-202 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dorchester | — |
| 2005-05-26 | 519-203 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Lambeth | — |
| 2005-05-26 | 519-204 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | London | — |
| 2005-05-26 | 601-846 | 3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | NVALAIRSTA | MS |
| 2005-05-26 | 601-908 | 3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - MS | 5178 | OBADIAH | MS |
| 2005-05-26 | 613-496 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Russell | — |
| 2005-05-26 | 714-852 | 0–9 XXXall 10 · 6 holders which blocks → | METROPCS NETWORKS, LLC | 899D | SANTA ANA | CA |
| 2005-05-26 | 731-819 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | MARTIN | TN |
| 2005-05-26 | 863-694 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | LAKEPLACID | FL |
| 2005-05-26 | 904-748 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | COMCAST IP PHONE, LLC | 318J | MAXVILLE | FL |
| 2005-05-25 | 360-967 | 0–9 XXXall 10 · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - WA | 6121 | CASTLEROCK | WA |
| 2005-05-25 | 407-580 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | ORLANDO | FL |
| 2005-05-25 | 561-506 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | WPALMBEACH | FL |
| 2005-05-25 | 585-204 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | DANSVILLE | NY |
| 2005-05-25 | 607-604 | 4XXX6XXX7XXX9XXX · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | SIDNEY | NY |
| 2005-05-25 | 607-634 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | WHITNEY PT | NY |
| 2005-05-25 | 607-875 | 0–9 XXXall 10 · 7 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | GREENE | NY |
| 2005-05-25 | 662-228 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | SHUQUALAK | MS |
| 2005-05-25 | 662-634 | 0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | MABEN | MS |
| 2005-05-25 | 662-736 | 0–9 XXXall 10 · 6 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | LOUISVILLE | MS |
| 2005-05-25 | 662-775 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | SHELBY | MS |
| 2005-05-25 | 662-788 | 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 9 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | MACON | MS |
| 2005-05-25 | 662-795 | 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 7 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | ROLLNGFORK | MS |
| 2005-05-25 | 662-883 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | SCOOBA | MS |
| 2005-05-25 | 662-935 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | PACE | MS |
| 2005-05-25 | 662-987 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | TELEPAK NETWORKS, INC. - MS | 5278 | GUNNISON | MS |
| 2005-05-25 | 727-729 | 0–9 XXXall 10 · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | CLEARWATER | FL |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.