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
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
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.