NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

11 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2020-11-23 251-332-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-501-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-501-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-501-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-501-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-529-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-724-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-724-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-724-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-724-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-19 251-724-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2020-11-17 251-724-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 MOBILE AL
2020-11-16 251-313-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J DAUPHIN IS AL
2020-11-12 251-293-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEFONTN AL
2020-11-12 251-293-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEFONTN AL
2020-11-12 251-293-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BELLEFONTN AL
2020-11-12 251-724-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2020-11-12 251-724-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2020-11-12 251-724-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J MOBILE AL
2020-11-05 251-215-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FOLEY AL
2020-11-05 251-501-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-05 251-501-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-05 251-501-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-05 251-501-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-05 251-501-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-05 251-699-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F IRNGTNSTEL AL
2020-11-02 251-316-0XXX 0000–0999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-02 251-318-8XXX 8000–8999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-02 251-318-9XXX 9000–9999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-02 251-620-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-02 251-620-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E MOBILE AL
2020-11-02 251-699-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E IRNGTNSTEL AL
2020-11-02 251-699-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E IRNGTNSTEL AL
2020-11-02 251-810-0XXX 0000–0999Assigned ONVOY, LLC - AL 604E GRAND BAY AL
2020-11-02 251-810-1XXX 1000–1999Assigned ONVOY, LLC - AL 604E GRAND BAY AL
2020-11-02 251-842-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E PETERMAN AL
2020-11-02 251-842-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E PETERMAN AL
2020-11-02 251-850-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E FAIRHOPE AL
2020-11-02 251-850-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E FAIRHOPE AL
2020-11-02 251-862-4XXX 4000–4999Assigned ONVOY, LLC - AL 604E URIAH AL
2020-11-02 251-862-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E URIAH AL
2020-11-02 251-900-6XXX 6000–6999Assigned ONVOY, LLC - AL 604E EXCEL AL
2020-11-02 251-900-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E EXCEL AL
2020-10-29 251-235-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E MCINTOSH AL
2020-10-29 251-235-5XXX 5000–5999Assigned ONVOY, LLC - AL 604E MCINTOSH AL
2020-10-29 251-261-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E MCCULLOUGH AL
2020-10-29 251-297-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E FLOMATON AL
2020-10-29 251-297-3XXX 3000–3999Assigned ONVOY, LLC - AL 604E FLOMATON AL
2020-10-29 251-317-2XXX 2000–2999Assigned ONVOY, LLC - AL 604E CITRONELLE AL
2020-10-29 251-322-7XXX 7000–7999Assigned ONVOY, LLC - AL 604E ATMORE AL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.