NumberResearchRecent thousands-block assignments
9 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 539
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 |
|---|---|---|---|---|---|---|---|
| 2015-07-06 | 539-999-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-999-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-999-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-999-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-05-14 | 539-999-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-04-20 | 539-999-0XXX | 0000–0999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-03-26 | 539-888-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-03-26 | 539-888-9XXX | 9000–9999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-02-17 | 539-999-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-02-17 | 539-999-9XXX | 9000–9999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2014-10-27 | 539-302-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-10-27 | 539-302-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-03-06 | 539-302-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2014-01-03 | 539-302-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2011-12-08 | 539-832-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-12-08 | 539-832-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-11-04 | 539-832-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | TULSA | OK |
| 2011-11-04 | 539-832-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | TULSA | OK |
| 2011-10-13 | 539-777-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2011-10-13 | 539-777-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2011-10-13 | 539-777-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2011-10-13 | 539-777-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2011-10-13 | 539-777-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2011-10-13 | 539-777-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK | 5813 | TULSA | OK |
| 2011-10-06 | 539-573-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | TULSA | OK |
| 2011-10-06 | 539-573-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | TULSA | OK |
| 2011-10-06 | 539-573-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | TULSA | OK |
| 2011-09-23 | 539-777-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-09-13 | 539-777-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-08-23 | 539-777-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-06-02 | 539-664-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-05-13 | 539-664-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-05-13 | 539-664-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-05-13 | 539-664-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2011-04-15 | 539-664-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-04-15 | 539-664-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-04-15 | 539-664-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2011-04-15 | 539-664-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
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.