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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2014-04-11 251-273-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J CITRONELLE AL
2014-04-11 251-276-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 COFFEEVL AL
2014-04-11 251-290-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J GRAND BAY AL
2014-04-11 251-299-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MT VERNON AL
2014-04-11 251-306-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J IRNGTNSTEL AL
2014-04-11 251-494-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BAYMINETTE AL
2014-04-11 251-824-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 BAYOUBATRE AL
2014-04-11 251-861-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 DAUPHIN IS AL
2014-04-11 251-873-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FOWL RIVER AL
2014-04-11 251-929-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FAIRHOPE AL
2014-04-11 251-973-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J BELLEFONTN AL
2014-04-11 251-973-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BELLEFONTN AL
2014-04-03 251-241-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 BREWTON AL
2014-04-03 251-581-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2014-04-03 251-616-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 CLEAR SPG AL
2014-03-25 251-207-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEFONTN AL
2014-03-14 251-265-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MT VERNON AL
2014-03-14 251-929-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FAIRHOPE AL
2014-03-07 251-260-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MELVIN AL
2014-02-28 251-327-1XXX 1000–1999Assigned METROPCS, INC. 5562 MOBILE AL
2014-02-28 251-327-9XXX 9000–9999Assigned METROPCS, INC. 5562 MOBILE AL
2014-02-26 251-303-2XXX 2000–2999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2014-02-26 251-303-3XXX 3000–3999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2014-02-26 251-303-4XXX 4000–4999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2014-02-24 251-284-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J FOLEY AL
2014-02-20 251-216-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2014-02-20 251-236-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2014-02-20 251-301-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2014-02-20 251-301-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2014-02-20 251-301-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2014-02-20 251-301-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2014-02-20 251-301-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2014-02-20 251-307-8XXX 8000–8999Assigned METROPCS, INC. 5562 MOBILE AL
2014-02-20 251-307-9XXX 9000–9999Assigned METROPCS, INC. 5562 MOBILE AL
2014-02-20 251-616-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CLEAR SPG AL
2014-02-18 251-303-5XXX 5000–5999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2014-02-18 251-303-6XXX 6000–6999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2014-02-18 251-303-7XXX 7000–7999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 MOBILE AL
2014-02-12 251-307-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C MOBILE AL
2014-02-11 251-308-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MOBILE AL
2014-02-11 251-929-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FAIRHOPE AL
2014-01-22 251-273-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CITRONELLE AL
2014-01-08 251-494-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 BAYMINETTE AL
2013-12-17 251-581-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2013-12-10 251-260-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2013-12-06 251-494-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2013-12-06 251-494-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2013-12-03 251-301-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2013-11-12 251-262-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2013-11-11 251-207-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BELLEFONTN 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.