NumberResearchRecent thousands-block assignments
0 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, all time — NPA 580
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-08-12 | 580-589-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SO COLDWTR | OK |
| 2024-08-08 | 580-550-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WALTERS | OK |
| 2022-10-18 | 580-412-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FAIRVIEW | OK |
| 2022-10-17 | 580-292-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | INDIAHOMA | OK |
| 2022-10-17 | 580-408-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RATTAN | OK |
| 2022-10-17 | 580-489-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FORTTOWSON | OK |
| 2022-10-17 | 580-669-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GLENCOE | OK |
| 2022-10-17 | 580-723-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RED ROCK | OK |
| 2022-10-17 | 580-738-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HEADRICK | OK |
| 2022-10-17 | 580-780-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BENNINGTON | OK |
| 2022-10-14 | 580-566-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BOSWELL | OK |
| 2015-05-18 | 580-258-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COALGATE | OK |
| 2015-05-14 | 580-596-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHEROKEE | OK |
| 2015-04-23 | 580-662-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RINGLING | OK |
| 2015-04-22 | 580-781-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SARKNSASCY | OK |
| 2015-04-15 | 580-373-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BESSIE | OK |
| 2015-04-15 | 580-757-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | RYAN | OK |
| 2015-03-06 | 580-238-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARIETTA | OK |
| 2015-03-06 | 580-245-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | IDABEL | OK |
| 2015-03-06 | 580-271-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ANTLERS | OK |
| 2015-03-06 | 580-290-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WOODWARD | OK |
| 2015-03-06 | 580-396-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MORRISON | OK |
| 2015-03-06 | 580-710-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PERRY | OK |
| 2015-03-06 | 580-721-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARLOW | OK |
| 2013-12-10 | 580-367-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CADDO | OK |
| 2013-01-24 | 580-228-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WAURIKA | OK |
| 2013-01-24 | 580-387-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TISHOMINGO | OK |
| 2013-01-24 | 580-672-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MADILL | OK |
| 2013-01-24 | 580-759-0XXX | 0000–0999 | Assigned | AT&T ENTERPRISES, LLC | 516C | STRATFORD | OK |
| 2012-11-09 | 580-786-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DUNCAN | OK |
| 2012-01-13 | 580-268-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MARLAND | OK |
| 2011-09-13 | 580-952-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HITCHCOCK | OK |
| 2011-08-15 | 580-218-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BRECKENRDG | OK |
| 2011-08-15 | 580-232-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CACHE | OK |
| 2011-08-15 | 580-264-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HEALDTON | OK |
| 2011-08-15 | 580-288-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KREMLIN | OK |
| 2011-08-15 | 580-325-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | HILLSDALE | OK |
| 2011-08-15 | 580-329-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CARRIER | OK |
| 2011-08-15 | 580-345-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SOPER | OK |
| 2011-08-15 | 580-417-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FAIRMONT | OK |
| 2011-08-15 | 580-509-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ATOKA | OK |
| 2011-08-15 | 580-563-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BLAIR | OK |
| 2011-08-15 | 580-565-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KINGSTON | OK |
| 2011-08-15 | 580-633-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ELDORADO | OK |
| 2011-08-15 | 580-648-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | OLUSTEE | OK |
| 2011-08-15 | 580-668-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WILSON | OK |
| 2011-08-15 | 580-706-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MANGUM | OK |
| 2011-08-15 | 580-725-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BILLINGS | OK |
| 2011-08-15 | 580-751-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ROCKY | OK |
| 2011-08-15 | 580-845-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TUPELO | 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.