NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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 318
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 46
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1
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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2025-03-27 318-457-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SHREVEPORT LA
2022-01-14 318-782-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 ALEXANDRIA LA
2019-08-09 318-833-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2019-08-09 318-833-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2019-08-09 318-833-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2019-05-24 318-642-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2019-05-01 318-642-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2018-03-09 318-399-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2016-11-08 318-392-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 COLFAX LA
2016-11-08 318-657-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 JONESVILLE LA
2016-11-08 318-718-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 BENTON LA
2016-06-15 318-704-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 ALEXANDRIA LA
2016-02-17 318-437-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 FERRIDAY LA
2016-02-17 318-502-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 COLUMBIA LA
2016-02-17 318-702-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 COUSHATTA LA
2015-08-28 318-626-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2015-06-18 318-215-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 OAKDALE LA
2014-02-18 318-891-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 GREENWOOD LA
2013-02-04 318-216-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2012-08-28 318-582-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 MONROE LA
2011-12-28 318-498-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 WINNSBORO LA
2011-11-23 318-303-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 RAYVILLE LA
2011-11-23 318-414-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 VIDALIA LA
2011-11-23 318-480-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 JONESBORO LA
2011-11-23 318-982-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 FARMERVL LA
2011-04-05 318-767-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 ALEXANDRIA LA
2010-11-01 318-519-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 BLANCHARD LA
2010-11-01 318-775-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 KEITHVILLE LA
2010-08-26 318-906-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 LOGANSPORT LA
2010-04-15 318-232-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 RUSTON LA
2010-03-01 318-517-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 SHREVEPORT LA
2010-01-21 318-639-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 MINDEN LA
2010-01-19 318-618-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 GRAND CANE LA
2010-01-14 318-231-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 LKPROVIDNC LA
2010-01-14 318-295-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 BUNKIE LA
2010-01-14 318-351-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 BASTROP LA
2010-01-14 318-485-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 OAKDALE LA
2010-01-14 318-490-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 OAK GROVE LA
2010-01-14 318-493-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 TALLULAH LA
2010-01-14 318-523-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 HOMER LA
2010-01-14 318-563-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 MARKSVILLE LA
2010-01-14 318-624-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 HAYNESVL LA
2010-01-14 318-947-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 MANSFIELD LA
2009-12-27 318-379-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 NATCHITCHS LA
2009-12-15 318-602-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 MANY LA
2007-01-19 318-290-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 ALEXANDRIA LA
2007-01-19 318-537-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 MONROE LA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.