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
2010-09-02 251-287-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2010-09-02 251-287-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2010-08-06 251-210-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FAIRHOPE AL
2010-08-06 251-387-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2010-08-05 251-517-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FAIRHOPE AL
2010-08-02 251-284-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2010-07-28 251-284-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2010-07-20 251-287-8XXX 8000–8999Assigned TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2010-07-16 251-259-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2010-07-16 251-721-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2010-07-16 251-725-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2010-07-08 251-288-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-06-07 251-219-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2010-06-02 251-494-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F BAYMINETTE AL
2010-06-02 251-517-9XXX 9000–9999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F FAIRHOPE AL
2010-05-25 251-321-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F ATMORE AL
2010-05-25 251-357-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F HUXFORD AL
2010-05-21 251-299-1XXX 1000–1999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MT VERNON AL
2010-05-21 251-306-1XXX 1000–1999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F IRNGTNSTEL AL
2010-05-19 251-229-5XXX 5000–5999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 ATMORE AL
2010-05-18 251-202-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2010-05-18 251-263-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2010-05-18 251-263-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2010-05-18 251-263-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2010-05-18 251-263-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2010-05-14 251-207-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F BELLEFONTN AL
2010-05-14 251-273-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F CITRONELLE AL
2010-05-14 251-290-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F GRAND BAY AL
2010-05-14 251-375-0XXX 0000–0999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MOBILE AL
2010-05-14 251-418-1XXX 1000–1999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MCINTOSH AL
2010-05-14 251-824-6XXX 6000–6999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F BAYOUBATRE AL
2010-05-07 251-284-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2010-05-05 251-314-1XXX 1000–1999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F BREWTON AL
2010-04-15 251-219-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2010-04-08 251-288-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-03-08 251-298-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-03-04 251-222-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-03-04 251-284-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2010-02-26 251-369-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 EVERGREEN AL
2010-02-18 251-214-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2010-02-16 251-727-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BREWTON AL
2010-02-11 251-222-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-02-11 251-222-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-02-11 251-222-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-02-11 251-222-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-02-11 251-222-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-01-22 251-210-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FAIRHOPE AL
2010-01-14 251-284-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FOLEY AL
2010-01-13 251-288-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2010-01-13 251-288-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE 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.