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
2018-08-27 251-314-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E BREWTON AL
2018-08-27 251-369-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E EVERGREEN AL
2018-08-27 251-369-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E EVERGREEN AL
2018-08-24 251-276-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E COFFEEVL AL
2018-08-24 251-290-8XXX 8000–8999Assigned ONVOY, LLC - AL 604E GRAND BAY AL
2018-08-24 251-306-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E IRNGTNSTEL AL
2018-08-24 251-309-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E BAYOUBATRE AL
2018-08-24 251-873-8XXX 8000–8999Assigned ONVOY, LLC - AL 604E FOWL RIVER AL
2018-08-20 251-257-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEFONTN AL
2018-08-06 251-250-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E BAYMINETTE AL
2018-07-26 251-355-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J MOBILE AL
2018-07-12 251-265-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MT VERNON AL
2018-07-12 251-355-6XXX 6000–6999Assigned MCC TELEPHONY OF THE SOUTH, LLC - AL 773F MOBILE AL
2018-06-07 251-277-6XXX 6000–6999Assigned METROPCS, INC. 5562 MOBILE AL
2018-06-07 251-355-8XXX 8000–8999Assigned METROPCS, INC. 5562 MOBILE AL
2018-06-05 251-302-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MONROEVL AL
2018-03-14 251-283-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D MOBILE AL
2018-03-08 251-620-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2018-03-08 251-620-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2018-03-08 251-620-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2018-03-08 251-620-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2018-03-07 251-213-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2018-03-07 251-215-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2018-03-07 251-215-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2018-03-07 251-215-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2018-03-07 251-215-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 FOLEY AL
2018-03-06 251-228-7XXX 7000–7999Assigned METROPCS, INC. 5562 FOLEY AL
2018-03-06 251-369-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 EVERGREEN AL
2018-02-27 251-278-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FAIRHOPE AL
2018-02-27 251-278-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FAIRHOPE AL
2018-02-01 251-250-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BAYMINETTE AL
2018-01-29 251-277-0XXX 0000–0999Assigned NUSO, LLC 551G MOBILE AL
2018-01-17 251-620-0XXX 0000–0999Assigned TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2018-01-17 251-620-1XXX 1000–1999Assigned TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2018-01-17 251-620-2XXX 2000–2999Assigned TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2017-12-22 251-257-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEFONTN AL
2017-11-15 251-320-2XXX 2000–2999Assigned ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 JACKSON AL
2017-11-01 251-260-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2017-09-29 251-277-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E MOBILE AL
2017-09-29 251-277-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E MOBILE AL
2017-09-29 251-277-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E MOBILE AL
2017-09-29 251-277-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E MOBILE AL
2017-09-29 251-277-8XXX 8000–8999Assigned ONVOY, LLC - AL 604E MOBILE AL
2017-09-20 251-217-5XXX 5000–5999Assigned METROPCS, INC. 5562 MOBILE AL
2017-09-20 251-264-4XXX 4000–4999Assigned METROPCS, INC. 5562 MOBILE AL
2017-09-20 251-264-5XXX 5000–5999Assigned METROPCS, INC. 5562 MOBILE AL
2017-09-20 251-355-5XXX 5000–5999Assigned METROPCS, INC. 5562 MOBILE AL
2017-09-20 251-360-1XXX 1000–1999Assigned BUTLER TEL. CO., INC. 0284 GROVE HILL AL
2017-08-29 251-264-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2017-08-24 251-355-0XXX 0000–0999Assigned ONVOY, LLC - AL 604E 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.