NumberResearchRecent thousands-block assignments
25 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 501
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 |
|---|---|---|---|---|---|---|---|
| 2015-02-13 | 501-594-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | PARON | AR |
| 2015-02-04 | 501-777-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR | 7277 | LITTLEROCK | AR |
| 2015-02-02 | 501-505-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR | 7277 | CONWAY | AR |
| 2015-02-02 | 501-777-6XXX | 6000–6999 | Assigned | ONVOY, LLC - AR | 348F | LITTLEROCK | AR |
| 2015-02-02 | 501-777-7XXX | 7000–7999 | Assigned | ONVOY, LLC - AR | 348F | LITTLEROCK | AR |
| 2015-01-29 | 501-566-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | JONESMILLS | AR |
| 2015-01-26 | 501-242-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | MORRILTON | AR |
| 2015-01-26 | 501-278-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | SEARCY | AR |
| 2015-01-26 | 501-302-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | HEBER SPG | AR |
| 2015-01-26 | 501-482-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | FERNDALE | AR |
| 2015-01-26 | 501-602-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAUXITE | AR |
| 2015-01-26 | 501-602-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BAUXITE | AR |
| 2015-01-21 | 501-419-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROSE BUD | AR |
| 2015-01-16 | 501-651-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | HOTSPRINGS | AR |
| 2015-01-16 | 501-819-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | SYVNHLSHWD | AR |
| 2015-01-16 | 501-939-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | LONSDALE | AR |
| 2015-01-16 | 501-991-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | CRYSTALSPG | AR |
| 2015-01-15 | 501-386-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | CENTER RDG | AR |
| 2015-01-15 | 501-669-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | CLEVELAND | AR |
| 2015-01-15 | 501-697-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | CONWAY | AR |
| 2015-01-13 | 501-408-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | BENTON | AR |
| 2015-01-13 | 501-432-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NIMROD | AR |
| 2015-01-13 | 501-509-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | COY | AR |
| 2015-01-13 | 501-653-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | BRYANTCGVL | AR |
| 2015-01-13 | 501-864-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SYVNHLSHWD | AR |
| 2015-01-13 | 501-864-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SYVNHLSHWD | AR |
| 2014-12-19 | 501-486-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPRINGLAKE | AR |
| 2014-12-19 | 501-542-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SYVNHLSHWD | AR |
| 2014-12-19 | 501-897-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WRIGHTSVL | AR |
| 2014-12-17 | 501-207-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SEARCY | AR |
| 2014-12-17 | 501-289-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MORRILTON | AR |
| 2014-12-17 | 501-306-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | QUITMAN | AR |
| 2014-12-17 | 501-485-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PINNACLE | AR |
| 2014-12-17 | 501-523-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SCOTT | AR |
| 2014-12-17 | 501-594-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PARON | AR |
| 2014-12-17 | 501-728-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PANGBURN | AR |
| 2014-12-17 | 501-796-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VILONIA | AR |
| 2014-12-17 | 501-803-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PALARM | AR |
| 2014-12-16 | 501-232-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | BEEBE | AR |
| 2014-12-16 | 501-502-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | LITTLEROCK | AR |
| 2014-12-16 | 501-502-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | LITTLEROCK | AR |
| 2014-12-15 | 501-503-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AR | 802C | LITTLEROCK | AR |
| 2014-12-12 | 501-209-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | JESSIEVL | AR |
| 2014-12-12 | 501-238-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GREERSFRRY | AR |
| 2014-12-12 | 501-302-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HEBER SPG | AR |
| 2014-12-12 | 501-330-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WYE | AR |
| 2014-12-12 | 501-331-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PERRYVILLE | AR |
| 2014-12-12 | 501-440-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SO FOURCHE | AR |
| 2014-12-12 | 501-467-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MALVERN | AR |
| 2014-12-12 | 501-475-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | SPRINGLAKE | AR |
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.