NumberResearchRecent prefix assignments
0 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, all time — NPA 731
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2026-07-23 | 731-295 | 9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MILAN | TN |
| 2024-12-12 | 731-272 | 1XXX3XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | RIPLEY | TN |
| 2023-09-18 | 731-250 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-06-22 | 731-230 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2023-04-04 | 731-216 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-10-28 | 731-208 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2022-05-27 | 731-292 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2016-06-27 | 731-361 | 0–9 XXXall 10 · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BOLIVAR | TN |
| 2011-05-23 | 731-227 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARIS | TN |
| 2007-01-29 | 731-206 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SCOTTSHILL | TN |
| 2003-04-30 | 731-733 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | PARSONS | TN |
| 2002-09-04 | 731-332 | 2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MARTIN | TN |
| 2002-07-26 | 731-334 | 5XXX6XXX7XXX8XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DYERSBURG | TN |
| 2002-07-26 | 731-335 | 5XXX6XXX7XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | UNION CITY | TN |
| 2002-06-17 | 731-535 | 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HUNTINGDON | TN |
| 2001-07-31 | 731-707 | 3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BIG SANDY | TN |
| — | 731-217 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-220 | 2XXX4XXX7XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | CAMDEN | TN |
| — | 731-226 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-255 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MARTIN | TN |
| — | 731-267 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-331 | 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BOLIVAR | TN |
| — | 731-394 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-420 | 4XXX5XXX7XXX8XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HUMBOLDT | TN |
| — | 731-437 | 1XXX2XXX3XXX5XXX8XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-443 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BROWNSVL | TN |
| — | 731-460 | 2XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | RIPLEY | TN |
| — | 731-501 | 1XXX3XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BELLS | TN |
| — | 731-532 | 2XXX8XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BETHEL SPG | TN |
| — | 731-589 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DYERSBURG | TN |
| — | 731-607 | 8XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SAVANNAH | TN |
| — | 731-608 | 5XXX8XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HENDERSON | TN |
| — | 731-609 | 8XXX9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BOLIVAR | TN |
| — | 731-610 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | SELMER | TN |
| — | 731-612 | 5XXX6XXX9XXX · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | RIPLEY | TN |
| — | 731-613 | 2XXX4XXX7XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MILAN | TN |
| — | 731-614 | 9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LEXINGTON | TN |
| — | 731-616 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-617 | 4XXX5XXX6XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BELLS | TN |
| — | 731-618 | 3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HUMBOLDT | TN |
| — | 731-636 | 1XXX3XXX6XXX7XXX8XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MARTIN | TN |
| — | 731-699 | 1XXX2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | DRESDEN | TN |
| — | 731-730 | 0XXX2XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HENDERSON | TN |
| — | 731-780 | 9XXX which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BROWNSVL | TN |
| — | 731-793 | 1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HUNTINGDON | TN |
| — | 731-796 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | UNION CITY | TN |
| — | 731-798 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 7 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | LEXINGTON | TN |
| — | 731-803 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
| — | 731-879 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HENDERSON | TN |
| — | 731-928 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | JACKSON | TN |
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.