NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 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, all time — NPA 251
BANDWIDTH.COM CLEC, LLC - AL 189
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
2024-05-13 251-486-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2024-05-13 251-486-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2023-01-20 251-571-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2023-01-20 251-571-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2022-09-22 251-521-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F GRAND BAY AL
2022-09-22 251-521-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F GRAND BAY AL
2022-09-16 251-399-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2022-07-28 251-538-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2022-06-16 251-286-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2021-11-22 251-521-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F GRAND BAY AL
2021-07-27 251-286-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2021-07-16 251-291-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2021-06-28 251-699-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F IRNGTNSTEL AL
2021-06-15 251-238-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2021-06-15 251-810-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F GRAND BAY AL
2021-03-16 251-397-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F DAUPHIN IS AL
2021-03-10 251-254-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FLOMATON AL
2020-11-05 251-699-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F IRNGTNSTEL AL
2020-08-13 251-868-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2020-05-13 251-291-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2020-04-29 251-651-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2019-12-18 251-873-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FOWL RIVER AL
2019-06-03 251-320-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2019-06-03 251-320-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2019-05-09 251-299-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MT VERNON AL
2019-05-03 251-309-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYOUBATRE AL
2019-05-03 251-931-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F CLEAR SPG AL
2019-05-01 251-320-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2019-05-01 251-320-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F JACKSON AL
2019-04-25 251-227-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2019-04-25 251-290-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F GRAND BAY AL
2019-03-21 251-314-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2018-09-28 251-292-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2018-07-12 251-265-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MT VERNON AL
2017-11-01 251-260-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2017-07-17 251-260-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MELVIN AL
2017-06-15 251-276-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F COFFEEVL AL
2017-05-02 251-286-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BREWTON AL
2017-02-27 251-255-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2017-02-27 251-255-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2017-02-27 251-255-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2016-06-15 251-270-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FAIRHOPE AL
2016-02-18 251-450-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2016-02-18 251-776-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2015-10-06 251-207-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BELLEFONTN AL
2015-09-30 251-227-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F EVERGREEN AL
2015-09-28 251-239-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F BAYMINETTE AL
2015-09-28 251-270-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F FAIRHOPE AL
2015-09-22 251-304-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F MOBILE AL
2015-09-22 251-439-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AL 072F 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.