NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026
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 |
|---|---|---|---|---|---|---|---|
| 2021-08-18 | 803-949-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2017-09-01 | 803-881-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2017-07-11 | 803-373-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | BATH | SC |
| 2017-02-27 | 803-670-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | YORK | SC |
| 2016-03-18 | 803-770-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | NEWELLENTN | SC |
| 2016-03-16 | 803-615-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | EDGEFIELD | SC |
| 2016-03-16 | 803-618-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | JOHNSTON | SC |
| 2016-02-24 | 803-281-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | WHITMIRE | SC |
| 2016-02-24 | 803-500-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | PROSPERITY | SC |
| 2016-02-24 | 803-574-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SUMMERTON | SC |
| 2016-02-24 | 803-681-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SHARON | SC |
| 2015-12-21 | 803-956-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | BAMBERG | SC |
| 2014-02-28 | 803-717-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SHAWAFBHTS | SC |
| 2014-02-28 | 803-717-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SHAWAFBHTS | SC |
| 2014-02-28 | 803-717-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SHAWAFBHTS | SC |
| 2014-02-28 | 803-717-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | SHAWAFBHTS | SC |
| 2013-11-18 | 803-262-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | AIKEN | SC |
| 2013-04-30 | 803-576-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2012-12-17 | 803-780-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | DENMARK | SC |
| 2012-01-05 | 803-621-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | BARNWELL | SC |
| 2011-07-29 | 803-299-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-07-29 | 803-299-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2011-02-11 | 803-298-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | CHPNLTLMTS | SC |
| 2010-11-09 | 803-597-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | NEWBERRY | SC |
| 2010-09-03 | 803-358-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LEXINGTON | SC |
| 2009-11-02 | 803-619-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LAKE WYLIE | SC |
| 2009-10-30 | 803-560-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LK WYLIE W | SC |
| 2008-05-19 | 803-875-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | EASTOVER | SC |
| 2007-11-21 | 803-455-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | BEECH IS | SC |
| 2007-04-03 | 803-426-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | NO AUGUSTA | SC |
| 2007-03-09 | 803-451-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2007-02-08 | 803-818-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | YORK | SC |
| 2006-11-15 | 803-295-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 288B | AIKEN | SC |
| 2006-10-31 | 803-520-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LEXINGTON | SC |
| 2006-01-06 | 803-520-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | LEXINGTON | SC |
| 2006-01-06 | 803-655-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | STMATTHEWS | SC |
| 2005-09-27 | 803-740-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2005-09-27 | 803-740-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2005-09-27 | 803-740-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2005-09-27 | 803-740-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2005-09-08 | 803-740-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
| 2005-08-12 | 803-477-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - SC | 8534 | COLUMBIA | SC |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.