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 270
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 |
|---|---|---|---|---|---|---|---|
| 2024-08-19 | 270-375-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CENTERTOWN | KY |
| 2024-08-19 | 270-648-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PANTHER | KY |
| 2024-08-19 | 270-948-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FREDONIA | KY |
| 2024-08-19 | 270-966-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA FAYETTE | KY |
| 2024-08-15 | 270-719-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BLUFF SPG | KY |
| 2024-07-22 | 270-810-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PEMBROKE | KY |
| 2023-09-05 | 270-455-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HEBBARDSVL | KY |
| 2013-12-11 | 270-883-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JORDAN | KY |
| 2013-10-15 | 270-279-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HICKMAN | KY |
| 2013-07-29 | 270-924-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CANTON | KY |
| 2013-01-28 | 270-476-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DRAKESBORO | KY |
| 2013-01-28 | 270-617-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HARDINSBG | KY |
| 2013-01-28 | 270-660-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CROFTON | KY |
| 2012-11-08 | 270-504-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HARTFORD | KY |
| 2012-01-13 | 270-676-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NORTONVL | KY |
| 2011-11-15 | 270-336-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BREMEN | KY |
| 2011-11-15 | 270-372-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PLEASATRDG | KY |
| 2011-11-15 | 270-523-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | UTICA | KY |
| 2011-11-15 | 270-593-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SACRAMENTO | KY |
| 2011-11-15 | 270-613-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HABIT | KY |
| 2011-11-15 | 270-616-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | W LOUISVL | KY |
| 2011-11-15 | 270-673-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ISLAND | KY |
| 2011-11-15 | 270-794-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SORGHO | KY |
| 2011-11-14 | 270-851-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SYMSONIA | KY |
| 2011-11-08 | 270-233-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHITESVL | KY |
| 2011-11-08 | 270-330-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SHARON GRV | KY |
| 2011-11-08 | 270-355-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WATER VLY | KY |
| 2011-11-08 | 270-374-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STURGIS | KY |
| 2011-11-08 | 270-515-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PROVIDENCE | KY |
| 2011-11-08 | 270-521-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROBARDS | KY |
| 2011-11-08 | 270-529-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WOODBURN | KY |
| 2011-11-08 | 270-615-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ST CHARLES | KY |
| 2011-11-08 | 270-731-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RUSSELLVL | KY |
| 2011-11-08 | 270-835-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SEBREE | KY |
| 2011-11-08 | 270-880-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STANLEY | KY |
| 2011-11-08 | 270-884-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SLAUGHTERS | KY |
| 2011-11-08 | 270-896-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PRINCETON | KY |
| 2011-11-08 | 270-954-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TRENTON | KY |
| 2011-11-07 | 270-206-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CADIZ | KY |
| 2011-11-07 | 270-213-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DIXON | KY |
| 2011-11-07 | 270-231-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OWENSBORO | KY |
| 2011-11-07 | 270-235-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GRACEY | KY |
| 2011-11-07 | 270-249-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEBO | KY |
| 2011-11-07 | 270-253-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FRANKLIN | KY |
| 2011-11-07 | 270-254-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CLINTON | KY |
| 2011-11-07 | 270-257-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MCDANIELS | KY |
| 2011-11-07 | 270-258-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MORTONSGAP | KY |
| 2011-11-07 | 270-273-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CALHOUN | KY |
| 2011-11-07 | 270-276-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FORDSVILLE | KY |
| 2011-11-07 | 270-278-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LIVERMORE | KY |
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.