NumberResearchRecent thousands-block assignments
6 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 870
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 |
|---|---|---|---|---|---|---|---|
| 2015-03-20 | 870-412-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MONTICELLO | AR |
| 2015-03-20 | 870-417-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LAKE VLG | AR |
| 2015-03-20 | 870-479-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | GRADY | AR |
| 2015-03-20 | 870-484-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SHERIDAN | AR |
| 2015-03-20 | 870-546-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NORPHLET | AR |
| 2015-03-20 | 870-554-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MOUNTHOLLY | AR |
| 2015-03-20 | 870-596-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VILLAGE | AR |
| 2015-03-20 | 870-644-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WATSON | AR |
| 2015-03-20 | 870-690-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MCGEHEE | AR |
| 2015-03-20 | 870-699-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PRATTSVL | AR |
| 2015-03-20 | 870-737-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | PORTLAND | AR |
| 2015-03-20 | 870-765-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | LEOLA | AR |
| 2015-03-20 | 870-885-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | BEARDEN | AR |
| 2015-03-20 | 870-920-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WARREN | AR |
| 2015-03-20 | 870-943-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HUTTIG | AR |
| 2015-03-20 | 870-947-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | STEPHENS | AR |
| 2015-03-20 | 870-951-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | STRONG | AR |
| 2015-03-20 | 870-962-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | URBANA | AR |
| 2015-03-18 | 870-444-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | EL DORADO | AR |
| 2015-03-18 | 870-498-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CAMDEN | AR |
| 2015-03-18 | 870-685-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHIDESTER | AR |
| 2015-03-18 | 870-748-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CALION | AR |
| 2015-03-18 | 870-766-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | ALTHEIMER | AR |
| 2015-03-18 | 870-877-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | ARKANSASCY | AR |
| 2015-03-13 | 870-651-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | LAKE CITY | AR |
| 2015-03-13 | 870-973-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | BAY | AR |
| 2015-03-12 | 870-998-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | DEVALLSBLF | AR |
| 2015-03-11 | 870-376-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | BATESVILLE | AR |
| 2015-03-06 | 870-340-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | JONESBORO | AR |
| 2015-03-06 | 870-559-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARION | AR |
| 2015-03-06 | 870-627-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | JONESBORO | AR |
| 2015-03-05 | 870-333-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | JONESBORO | AR |
| 2015-02-20 | 870-551-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | W MEMPHIS | AR |
| 2015-02-13 | 870-293-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | ARKADLPHIA | AR |
| 2015-02-09 | 870-478-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | GILLHAM | AR |
| 2015-02-09 | 870-676-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MIDWAY | AR |
| 2015-02-09 | 870-682-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELAINE | AR |
| 2015-02-06 | 870-551-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | W MEMPHIS | AR |
| 2015-02-04 | 870-379-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DELIGHT | AR |
| 2015-02-04 | 870-387-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | COVE | AR |
| 2015-02-04 | 870-398-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DAISY | AR |
| 2015-02-03 | 870-274-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OKOLONA | AR |
| 2015-02-03 | 870-334-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NORMAN | AR |
| 2015-02-03 | 870-385-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | WICKES | AR |
| 2015-02-03 | 870-583-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | UMPIRE | AR |
| 2015-02-02 | 870-581-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FORREST CY | AR |
| 2015-01-29 | 870-346-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - AR | 5179 | MTPLEASANT | AR |
| 2015-01-29 | 870-499-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NORFORK | AR |
| 2015-01-21 | 870-600-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - AR | 196F | ASHDOWN | AR |
| 2015-01-21 | 870-760-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LOCKESBURG | 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.