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
2020-08-27 251-329-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-27 251-329-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-27 251-329-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-27 251-329-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-27 251-329-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-27 251-329-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-26 251-842-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E PETERMAN AL
2020-08-26 251-842-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E PETERMAN AL
2020-08-26 251-842-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E PETERMAN AL
2020-08-24 251-328-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-24 251-328-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-24 251-328-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-24 251-328-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-24 251-328-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-08-18 251-328-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2020-08-17 251-325-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E BAYMINETTE AL
2020-08-17 251-325-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E BAYMINETTE AL
2020-08-17 251-325-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E BAYMINETTE AL
2020-08-17 251-758-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E MT VERNON AL
2020-08-17 251-758-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E MT VERNON AL
2020-08-17 251-758-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E MT VERNON AL
2020-08-17 251-766-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E JACKSON AL
2020-08-17 251-766-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E JACKSON AL
2020-08-17 251-766-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E JACKSON AL
2020-08-13 251-868-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2020-08-11 251-328-3XXX 3000–3999Assigned METROPCS, INC. 5562 MOBILE AL
2020-08-11 251-328-7XXX 7000–7999Assigned METROPCS, INC. 5562 MOBILE AL
2020-08-11 251-328-8XXX 8000–8999Assigned METROPCS, INC. 5562 MOBILE AL
2020-08-06 251-304-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2020-08-06 251-346-9XXX 9000–9999Assigned FRACTEL, LLC 965H EVERGREEN AL
2020-08-06 251-465-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 MOBILE AL
2020-08-06 251-512-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H COFFEEVL AL
2020-08-05 251-261-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H MCCULLOUGH AL
2020-08-05 251-312-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H REPTON AL
2020-08-05 251-322-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H ATMORE AL
2020-08-05 251-336-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H MONROEVL AL
2020-08-05 251-351-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H BEATRICE AL
2020-08-05 251-356-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H FINCHBURG AL
2020-08-05 251-357-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H HUXFORD AL
2020-08-05 251-451-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H GOSPORT AL
2020-08-05 251-551-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H PINE APPLE AL
2020-08-05 251-572-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H FRISCOCITY AL
2020-08-05 251-842-0XXX 0000–0999Assigned ONVOY SPECTRUM, LLC 624H PETERMAN AL
2020-08-05 251-862-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H URIAH AL
2020-08-05 251-900-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H EXCEL AL
2020-07-23 251-328-2XXX 2000–2999Assigned CSC WIRELESS, LLC 425J MOBILE AL
2020-07-14 251-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H MOBILE AL
2020-07-14 251-758-6XXX 6000–6999Assigned FRACTEL, LLC 965H MT VERNON AL
2020-07-14 251-766-3XXX 3000–3999Assigned FRACTEL, LLC 965H JACKSON AL
2020-07-14 251-766-6XXX 6000–6999Assigned FRACTEL, LLC 965H JACKSON 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.