NumberResearchRecent thousands-block assignments
5 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
Most active assignees, last 30 days — NPA 605
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 | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-03-24 | 605-404-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9631 | SIOUX FLS | SD |
| 2017-03-24 | 605-404-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9631 | SIOUX FLS | SD |
| 2017-03-24 | 605-404-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9631 | SIOUX FLS | SD |
| 2017-03-24 | 605-404-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9631 | SIOUX FLS | SD |
| 2017-03-24 | 605-404-9XXX | 9000–9999 | Assigned | QWEST CORPORATION | 9631 | SIOUX FLS | SD |
| 2017-03-21 | 605-301-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | PIERRE | SD |
| 2017-03-21 | 605-340-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | SPEARFISH | SD |
| 2017-03-21 | 605-550-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | MITCHELL | SD |
| 2017-03-21 | 605-646-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | RAPID CITY | SD |
| 2017-03-21 | 605-743-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | HARISBGTEA | SD |
| 2017-03-21 | 605-824-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | ABERDEEN | SD |
| 2017-03-21 | 605-847-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | LK PRESTON | SD |
| 2017-03-21 | 605-954-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | WATERTOWN | SD |
| 2017-03-20 | 605-412-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | HURON | SD |
| 2017-03-16 | 605-468-4XXX | 4000–4999 | Assigned | NORTHERN VALLEY COMMUNICATIONS, LLC | 6125 | REDFIELD | SD |
| 2017-03-16 | 605-468-5XXX | 5000–5999 | Assigned | NORTHERN VALLEY COMMUNICATIONS, LLC | 6125 | REDFIELD | SD |
| 2017-03-07 | 605-417-0XXX | 0000–0999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-1XXX | 1000–1999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-2XXX | 2000–2999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-3XXX | 3000–3999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-4XXX | 4000–4999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-5XXX | 5000–5999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-6XXX | 6000–6999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-7XXX | 7000–7999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-8XXX | 8000–8999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-03-07 | 605-417-9XXX | 9000–9999 | Assigned | NATIVE AMERICAN TELECOM, LLC - SD | 424F | FTTHOMPSON | SD |
| 2017-02-09 | 605-730-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA SD-LLC | 693G | CHAMBERLAN | SD |
| 2017-01-26 | 605-872-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RAPID CITY | SD |
| 2017-01-26 | 605-872-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RAPID CITY | SD |
| 2017-01-24 | 605-219-6XXX | 6000–6999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RAPID CITY | SD |
| 2017-01-24 | 605-389-4XXX | 4000–4999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RAPID CITY | SD |
| 2017-01-24 | 605-389-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | RAPID CITY | SD |
| 2017-01-12 | 605-202-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - SD | 106F | VERMILLION | SD |
| 2017-01-11 | 605-681-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | SIOUX FLS | SD |
| 2017-01-10 | 605-679-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SD | 5180 | SIOUX FLS | SD |
| 2017-01-10 | 605-839-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BRANDON | SD |
| 2016-12-28 | 605-453-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | MILLER | SD |
| 2016-12-21 | 605-305-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | SIOUX FLS | SD |
| 2016-12-13 | 605-560-1XXX | 1000–1999 | Assigned | MCC TELEPHONY OF THE MID-WEST, LLC - SD | 920F | BROOKINGSR | SD |
| 2016-12-12 | 605-472-5XXX | 5000–5999 | Assigned | NORTHERN VALLEY COMMUNICATIONS, LLC | 6125 | REDFIELD | SD |
| 2016-12-12 | 605-472-9XXX | 9000–9999 | Assigned | NORTHERN VALLEY COMMUNICATIONS, LLC | 6125 | REDFIELD | SD |
| 2016-12-08 | 605-864-4XXX | 4000–4999 | Assigned | AIRUS, INC. - SD | 580H | FLANDREAU | SD |
| 2016-12-07 | 605-231-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | SIOUX FLS | SD |
| 2016-11-29 | 605-540-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NOSIOUX CY | SD |
| 2016-11-28 | 605-219-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SD | 162G | RAPID CITY | SD |
| 2016-11-28 | 605-681-9XXX | 9000–9999 | Assigned | ONVOY, LLC - SD | 162G | SIOUX FLS | SD |
| 2016-11-21 | 605-517-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | CUSTER | SD |
| 2016-11-18 | 605-309-4XXX | 4000–4999 | Assigned | ONVOY, LLC - SD | 162G | NOVALENTIN | SD |
| 2016-11-18 | 605-309-5XXX | 5000–5999 | Assigned | ONVOY, LLC - SD | 162G | NOVALENTIN | SD |
| 2016-11-11 | 605-638-9XXX | 9000–9999 | Assigned | AIRUS, INC. - SD | 580H | VERMILLION | SD |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.