Recent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 605-766 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 7024 | VIBORG | SD |
| — | 605-767 | not yet reported which blocks → | CLARITY TELECOM, LLC DBA BLUEPEAK | 7024 | HARISBGTEA | SD |
| — | 605-768 | not yet reported which blocks → | VENTURE COMMUNICATIONS COOPERATIVE | 1680 | LEBANON | SD |
| — | 605-769 | 2XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | GETTYSBURG | SD |
| — | 605-770 | not yet reported which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MITCHELL | SD |
| — | 605-771 | 1XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | GETTYSBURG | SD |
| — | 605-772 | not yet reported which blocks → | ALLIANCE COMM. COOPERATIVE, INC. (SPLIT ROCK) | 1657 | HOWARD | SD |
| — | 605-773 | not yet reported which blocks → | QWEST CORPORATION | 9631 | PIERRE | SD |
| — | 605-775 | not yet reported which blocks → | VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS | 1686 | BURKE | SD |
| — | 605-776 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | QWEST CORPORATION | 9631 | PIERRE | SD |
| — | 605-778 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | KIMBALL | SD |
| — | 605-779 | not yet reported which blocks → | MIDSTATE COMMUNICATIONS, INC. | 1670 | DELMONT | SD |
| — | 605-780 | not yet reported which blocks → | LONG LINES METRO, LLC - SD | 7010 | NOSIOUX CY | SD |
| — | 605-782 | 9XXX which blocks → | QWEST CORPORATION | 9631 | SIOUX FLS | SD |
| — | 605-783 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | HAYTI | SD |
| — | 605-784 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | BRADLEY | SD |
| — | 605-785 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | LAKENORDEN | SD |
| — | 605-786 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | QWEST CORPORATION | 9631 | RAPID CITY | SD |
| — | 605-787 | 0XXX1XXX2XXX3XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9631 | RAPID CITY | SD |
| — | 605-788 | not yet reported which blocks → | WEST RIVER COOPERATIVE TELEPHONE COMPANY | 1689 | MEADOW | SD |
| — | 605-793 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | CASTLEWOOD | SD |
| — | 605-794 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | TORONTO | SD |
| — | 605-795 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | GOODWIN | SD |
| — | 605-796 | not yet reported which blocks → | SANTEL COMMUNICATIONS COOPERATIVE, INC. - SD | 1676 | WOONSOCKET | SD |
| — | 605-797 | not yet reported which blocks → | WEST RIVER COOPERATIVE TELEPHONE COMPANY | 1689 | CAMP CROOK | SD |
| — | 605-798 | not yet reported which blocks → | GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM | 1659 | WICKSVILLE | SD |
| — | 605-809 | 0–9 XXXall 10 · 4 holders which blocks → | NUSO, LLC | 732J | SIOUX FLS | SD |
| — | 605-811 | not yet reported which blocks → | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | SD |
| — | 605-822 | not yet reported which blocks → | GREAT PLAINS COMMUNICATIONS, INC. | 1577 | NORTH CODY | SD |
| — | 605-823 | not yet reported which blocks → | WEST RIVER TELECOMMUNICATIONS COOP. - SD | 4414 | MOBRIDGE | SD |
| — | 605-825 | not yet reported which blocks → | TRIOTEL COMMUNICATIONS, INC. | 1669 | CLAYTON | SD |
| — | 605-826 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | SINAI | SD |
| — | 605-830 | 4XXX8XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | GREGORY | SD |
| — | 605-831 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | GREGORY | SD |
| — | 605-832 | not yet reported which blocks → | INTERSTATE TELECOM COOP, INC. - SD | 1651 | ASTORIA | SD |
| — | 605-833 | not yet reported which blocks → | GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM | 1659 | BUFFALOGAP | SD |
| — | 605-834 | not yet reported which blocks → | THREE RIVER TELCO | 1525 | NORTHNAPER | SD |
| — | 605-835 | not yet reported which blocks → | VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS | 1686 | GREGORY | SD |
| — | 605-836 | 0–9 XXXall 10 · 7 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CANTON | SD |
| — | 605-837 | not yet reported which blocks → | KADOKA TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS | 1667 | KADOKA | SD |
| — | 605-840 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | WINNER | SD |
| — | 605-841 | 1XXX which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | WINNER | SD |
| — | 605-842 | not yet reported which blocks → | VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS | 1686 | WINNER | SD |
| — | 605-843 | not yet reported which blocks → | GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM | 1659 | MIDLAND | SD |
| — | 605-845 | not yet reported which blocks → | WEST RIVER TELECOMMUNICATIONS COOP (MOBRIDGE) - SD | 1671 | MOBRIDGE | SD |
| — | 605-847 | 1XXX2XXX3XXX6XXX7XXX8XXX · 3 holders which blocks → | QWEST CORPORATION | 9631 | LK PRESTON | SD |
| — | 605-848 | 5XXX6XXX8XXX · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | GLENHAM | SD |
| — | 605-849 | not yet reported which blocks → | SANTEL COMMUNICATIONS COOPERATIVE, INC. - SD | 1676 | ALPENA | SD |
| — | 605-850 | none assigned yet which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | GLENHAM | SD |
| — | 605-852 | not yet reported which blocks → | VENTURE COMMUNICATIONS COOPERATIVE | 1680 | HIGHMORE | SD |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.