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 803
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 |
|---|---|---|---|---|---|---|---|
| 2016-09-09 | 803-862-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2016-06-29 | 803-400-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2015-07-08 | 803-828-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2015-04-07 | 803-310-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAMDEN | SC |
| 2015-01-08 | 803-602-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2014-08-20 | 803-851-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2014-04-01 | 803-851-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2013-08-20 | 803-569-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2013-01-23 | 803-384-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EDGEFIELD | SC |
| 2013-01-23 | 803-500-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PROSPERITY | SC |
| 2013-01-23 | 803-658-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SHARON | SC |
| 2012-11-26 | 803-281-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WHITMIRE | SC |
| 2012-11-14 | 803-262-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | AIKEN | SC |
| 2012-11-14 | 803-392-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GRANITEVL | SC |
| 2012-11-14 | 803-430-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JOHNSTON | SC |
| 2012-11-14 | 803-455-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BEECH IS | SC |
| 2012-11-14 | 803-594-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BATH | SC |
| 2012-11-14 | 803-613-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NO AUGUSTA | SC |
| 2012-11-14 | 803-780-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DENMARK | SC |
| 2012-11-14 | 803-998-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEWELLENTN | SC |
| 2012-08-31 | 803-724-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2011-10-26 | 803-219-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BLACKVILLE | SC |
| 2011-10-21 | 803-307-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BATESBURG | SC |
| 2011-10-21 | 803-450-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BARNWELL | SC |
| 2011-10-21 | 803-956-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BAMBERG | SC |
| 2011-08-26 | 803-525-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MILL CREEK | SC |
| 2011-08-03 | 803-401-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2011-04-27 | 803-597-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NEWBERRY | SC |
| 2011-02-09 | 803-291-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SRNGFLSLLY | SC |
| 2010-11-10 | 803-497-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
| 2009-12-23 | 803-573-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ALLENDALE | SC |
| 2009-12-23 | 803-592-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EASTOVER | SC |
| 2009-08-27 | 803-298-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHPNLTLMTS | SC |
| 2009-08-27 | 803-572-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CAMDEN | SC |
| 2009-08-27 | 803-816-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHPNLTLMTN | SC |
| 2009-08-27 | 803-997-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ORANGEBURG | SC |
| 2009-07-29 | 803-656-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LK WYLIE W | SC |
| 2009-07-29 | 803-675-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CLOVER | SC |
| 2009-07-29 | 803-701-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LAKE WYLIE | SC |
| 2009-07-29 | 803-818-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | YORK | SC |
| 2009-07-27 | 803-542-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | COLUMBIA | SC |
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.