NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

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, last 30 days — NPA 251
NEW CINGULAR WIRELESS PCS, LLC - GA 6
ONVOY, LLC - AL 3
WIDE VOICE, LLC - AL 2
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
2012-07-11 251-302-2XXX 2000–2999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MONROEVL AL
2012-06-26 251-239-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2012-06-05 251-206-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-06-01 251-206-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2012-05-09 251-338-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2012-05-02 251-273-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CITRONELLE AL
2012-03-14 251-260-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2012-03-05 251-201-0XXX 0000–0999Assigned METROPCS, INC. 5562 FOLEY AL
2012-03-05 251-348-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-03-05 251-607-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-03-05 251-652-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-02-29 251-586-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C MOBILE AL
2012-02-22 251-206-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J MOBILE AL
2012-02-15 251-298-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2012-02-15 251-436-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2012-02-07 251-508-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-02-07 251-586-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-01-19 251-207-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BELLEFONTN AL
2012-01-18 251-288-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2012-01-11 251-929-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J FAIRHOPE AL
2011-12-29 251-219-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2011-12-14 251-288-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL 7221 MOBILE AL
2011-11-23 251-273-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AL 7221 CITRONELLE AL
2011-11-16 251-284-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2011-10-27 251-298-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2011-10-17 251-321-2XXX 2000–2999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ATMORE AL
2011-10-14 251-697-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C FLOMATON AL
2011-10-14 251-973-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C BELLEFONTN AL
2011-10-03 251-284-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2011-09-12 251-210-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FAIRHOPE AL
2011-09-12 251-288-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2011-08-30 251-341-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2011-08-25 251-288-3XXX 3000–3999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MOBILE AL
2011-08-25 251-288-4XXX 4000–4999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MOBILE AL
2011-07-18 251-202-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2011-07-18 251-616-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CLEAR SPG AL
2011-07-13 251-341-2XXX 2000–2999Assigned PAETEC ITEL, LLC 829J MOBILE AL
2011-07-12 251-330-8XXX 8000–8999Assigned METROPCS, INC. 5562 MOBILE AL
2011-07-12 251-330-9XXX 9000–9999Assigned METROPCS, INC. 5562 MOBILE AL
2011-07-12 251-500-0XXX 0000–0999Assigned METROPCS, INC. 5562 FOLEY AL
2011-07-12 251-625-5XXX 5000–5999Assigned METROPCS, INC. 5562 MOBILE AL
2011-07-12 251-625-7XXX 7000–7999Assigned METROPCS, INC. 5562 MOBILE AL
2011-07-07 251-272-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2011-07-06 251-216-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2011-07-01 251-600-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2011-07-01 251-652-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2011-06-27 251-216-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2011-06-14 251-265-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MT VERNON AL
2011-06-08 251-387-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2011-05-27 251-265-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 MT VERNON AL

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.