NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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, all time — NPA 307
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2026-08-18 | 307-485-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CASPER | WY |
| 2026-08-04 | 307-442-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | EVANSTON | WY |
| 2026-08-04 | 307-479-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | POWELL | WY |
| 2026-08-04 | 307-482-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | WHEATLAND | WY |
| 2026-08-04 | 307-639-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LANDER | WY |
| 2026-07-15 | 307-385-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | JACKSON | WY |
| 2026-07-09 | 307-434-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2026-06-15 | 307-247-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CASPER | WY |
| 2026-06-15 | 307-414-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CHEYENNE | WY |
| 2026-06-15 | 307-449-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | ROCK SPG | WY |
| 2026-05-07 | 307-434-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2026-01-16 | 307-426-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CHEYENNE | WY |
| 2022-10-25 | 307-381-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | SHERIDAN | WY |
| 2022-10-07 | 307-445-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | KEMMERER | WY |
| 2022-09-22 | 307-395-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-09-16 | 307-395-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-09-07 | 307-395-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-08-18 | 307-395-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2022-07-19 | 307-230-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BORDER | WY |
| 2022-02-23 | 307-445-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | KEMMERER | WY |
| 2022-02-22 | 307-403-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | MORAN | WY |
| 2022-02-18 | 307-306-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | DOUGLAS | WY |
| 2022-02-17 | 307-291-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2022-01-27 | 307-291-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2022-01-27 | 307-306-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | DOUGLAS | WY |
| 2022-01-20 | 307-888-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | OLDFATHFUL | WY |
| 2022-01-20 | 307-999-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | MORAN | WY |
| 2022-01-16 | 307-445-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | KEMMERER | WY |
| 2021-12-13 | 307-291-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2021-11-23 | 307-387-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-11-23 | 307-487-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-11-05 | 307-423-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BUFFALO | WY |
| 2021-11-03 | 307-306-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | DOUGLAS | WY |
| 2021-10-26 | 307-387-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-10-26 | 307-387-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-10-20 | 307-396-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GREENRIVER | WY |
| 2021-10-20 | 307-396-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GREENRIVER | WY |
| 2021-10-01 | 307-387-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-10-01 | 307-387-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-08-11 | 307-395-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2021-05-26 | 307-225-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | LARAMIE | WY |
| 2021-05-18 | 307-500-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | BORDER | WY |
| 2021-04-30 | 307-228-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GILLETTE | WY |
| 2021-04-23 | 307-381-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | SHERIDAN | WY |
| 2021-04-23 | 307-381-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | SHERIDAN | WY |
| 2021-01-20 | 307-318-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | WRIGHT | WY |
| 2020-11-10 | 307-303-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | GREENRIVER | WY |
| 2020-11-02 | 307-302-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2020-08-19 | 307-302-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | CODY | WY |
| 2020-08-13 | 307-372-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - WY | 081F | DOUGLAS | WY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.