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 |
|---|---|---|---|---|---|---|---|
| 2016-12-30 | 539-313-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2016-12-30 | 539-313-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2016-12-30 | 539-313-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2016-12-30 | 539-313-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2016-12-30 | 539-313-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2016-12-30 | 539-313-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2016-12-14 | 539-292-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | TULSA | OK |
| 2016-12-08 | 539-215-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TULSA | OK |
| 2016-11-30 | 539-424-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2016-11-22 | 539-424-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | TULSA | OK |
| 2016-11-22 | 539-424-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | TULSA | OK |
| 2016-11-09 | 539-207-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA OK - LLC | 530C | CHELSEA | OK |
| 2016-11-09 | 539-424-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF OKLAHOMA, LLC - OK | 384H | TULSA | OK |
| 2016-10-25 | 539-206-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | LOCUST GRV | OK |
| 2016-10-25 | 539-219-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | STRANG | OK |
| 2016-10-18 | 539-205-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | SPAVINAW | OK |
| 2016-10-11 | 539-424-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2016-10-11 | 539-424-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2016-10-05 | 539-204-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | BRISTOW | OK |
| 2016-09-19 | 539-286-0XXX | 0000–0999 | Assigned | ONVOY, LLC - OK | 409F | OKMULGEE | OK |
| 2016-09-19 | 539-286-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OK | 409F | OKMULGEE | OK |
| 2016-09-06 | 539-286-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | OKMULGEE | OK |
| 2016-08-17 | 539-202-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2016-07-27 | 539-444-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2016-07-21 | 539-201-9XXX | 9000–9999 | Assigned | WINDSTREAM OKLAHOMA, INC. | 1965 | KIOWA | OK |
| 2016-07-12 | 539-200-9XXX | 9000–9999 | Assigned | VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW | 1165 | BARNSDALL | OK |
| 2016-07-12 | 539-203-9XXX | 9000–9999 | Assigned | VALOR TELECOM TX.LP-OK DBA WINDSTREAM COMM SW | 1165 | STROUD | OK |
| 2016-06-17 | 539-444-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2016-03-22 | 539-444-1XXX | 1000–1999 | Assigned | TELEPORT COMMUNICATIONS AMERICA OK - LLC | 530C | TULSA | OK |
| 2016-03-22 | 539-444-2XXX | 2000–2999 | Assigned | TELEPORT COMMUNICATIONS AMERICA OK - LLC | 530C | TULSA | OK |
| 2016-01-14 | 539-202-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OK | 5257 | TULSA | OK |
| 2015-12-01 | 539-202-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-12-01 | 539-202-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-12-01 | 539-202-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-12-01 | 539-202-8XXX | 8000–8999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-11-18 | 539-444-9XXX | 9000–9999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-10-21 | 539-444-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - OK | 119F | TULSA | OK |
| 2015-10-07 | 539-444-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | TULSA | OK |
| 2015-08-13 | 539-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-08-13 | 539-444-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-0XXX | 0000–0999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-1XXX | 1000–1999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-6XXX | 6000–6999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-888-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-999-2XXX | 2000–2999 | Assigned | ONVOY, LLC - OK | 409F | TULSA | OK |
| 2015-07-06 | 539-999-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OK | 409F | 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.