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 931
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 931-649 | not yet reported which blocks → | UNITED TELEPHONE COMPANY DBA UNITED COMMUNICATIONS | 0581 | ESTILL SPG | TN |
| — | 931-653 | not yet reported which blocks → | TWIN LAKES TEL. COOP. CORP. | 0579 | GRANVILLE | TN |
| — | 931-657 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | DOYLE | TN |
| — | 931-659 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | PETERSBURG | TN |
| — | 931-662 | not yet reported which blocks → | TN | |||
| — | 931-668 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | MCMINNVL | TN |
| — | 931-670 | 8XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LYLES | TN |
| — | 931-676 | none assigned yet which blocks → | TENNESSEE TEL. CO. | 0575 | CLIFTON | TN |
| — | 931-678 | not yet reported which blocks → | TWIN LAKES TEL. COOP. CORP. | 0579 | HIGHLAND | TN |
| — | 931-680 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SHELBYVL | TN |
| — | 931-682 | 1XXX6XXX7XXX8XXX · 3 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SANTA FE | TN |
| — | 931-684 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SHELBYVL | TN |
| — | 931-685 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | SHELBYVL | TN |
| — | 931-686 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | ROCKISLAND | TN |
| — | 931-692 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | BEERSHEBA | TN |
| — | 931-695 | not yet reported which blocks → | UNITED TELEPHONE COMPANY DBA UNITED COMMUNICATIONS | 0581 | FLAT CREEK | TN |
| — | 931-698 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | COLUMBIA | TN |
| — | 931-700 | not yet reported which blocks → | TN | |||
| — | 931-703 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | SHELBYVL | TN |
| — | 931-707 | not yet reported which blocks → | CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC | 4336 | CROSSVILLE | TN |
| — | 931-711 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TN |
| — | 931-721 | none assigned yet which blocks → | PEOPLES TEL. CO. | 0576 | TENNESSRDG | TN |
| — | 931-722 | none assigned yet which blocks → | TENNESSEE TEL. CO. | 0575 | WAYNESBORO | TN |
| — | 931-723 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MANCHESTER | TN |
| — | 931-724 | not yet reported which blocks → | TENNESSEE TEL. CO. | 0575 | COLLINWOOD | TN |
| — | 931-728 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | MANCHESTER | TN |
| — | 931-729 | 8XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | CENTERVL | TN |
| — | 931-731 | not yet reported which blocks → | TN | |||
| — | 931-732 | not yet reported which blocks → | ARDMORE TEL. CO., INC. | 0280 | MCBURG | TN |
| — | 931-735 | 3XXX4XXX5XXX6XXX · 2 holders which blocks → | POWERTEL NASHVILLE LICENSES, INC. | 7476 | SHELBYVL | TN |
| — | 931-738 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | SPARTA | TN |
| — | 931-739 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | SPARTA | TN |
| — | 931-752 | not yet reported which blocks → | TWIN LAKES TEL. COOP. CORP. | 0579 | JAMESTOWN | TN |
| — | 931-759 | none assigned yet which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LYNCHBURG | TN |
| — | 931-761 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | OLD ZION | TN |
| — | 931-762 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAWRENCEBG | TN |
| — | 931-764 | 1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 7 holders which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | W VANLEER | TN |
| — | 931-766 | not yet reported which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | LAWRENCEBG | TN |
| — | 931-771 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA, LLC - TN | 114F | SOOAKGROVE | TN |
| — | 931-779 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | LAAGER | TN |
| — | 931-788 | 7XXX8XXX · 2 holders which blocks → | CITIZENS COMM CO TN DBA FRONTIER COMM OF TN, LLC | 4336 | TANSI | TN |
| — | 931-792 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → | ONVOY, LLC - TN | 525E | FLINTVILLE | TN |
| — | 931-796 | 9XXX which blocks → | BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL | 9419 | HOHENWALD | TN |
| — | 931-797 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | COLUMBIA | TN |
| — | 931-801 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | CLARKSVL | TN |
| — | 931-808 | not yet reported which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN | 6673 | SHELBYVL | TN |
| — | 931-810 | 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | ONVOY, LLC - TN | 525E | HUNTLAND | TN |
| — | 931-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TN |
| — | 931-814 | 0XXX1XXX2XXX4XXX8XXX9XXX · 2 holders which blocks → | ONVOY, LLC - TN | 525E | PETERSBURG | TN |
| — | 931-815 | not yet reported which blocks → | BEN LOMAND RURAL TEL. COOP., INC. | 0553 | MCMINNVL | 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.