NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 424
ONVOY, LLC - CA 10
OPENTACT INC. 1
NEW CINGULAR WIRELESS PCS, LLC 1
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
2014-10-30 424-337-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRANCE CA
2014-10-30 424-364-0XXX 0000–0999Assigned AT&T ENTERPRISES, LLC 516C SAN PEDRO CA
2014-10-30 424-376-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRANCE CA
2014-10-29 424-355-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-10-29 424-355-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-10-29 424-355-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-10-29 424-355-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-10-29 424-372-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-10-29 424-372-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-10-21 424-355-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2014-10-17 424-376-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TORRANCE CA
2014-10-17 424-376-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TORRANCE CA
2014-10-15 424-375-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2014-10-15 424-375-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2014-10-14 424-371-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 W ANGELES CA
2014-10-14 424-371-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 W ANGELES CA
2014-10-13 424-347-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOMITA CA
2014-10-13 424-374-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HAWTHORNE CA
2014-10-09 424-351-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C INGLEWOOD CA
2014-10-08 424-346-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J MALIBU CA
2014-10-07 424-358-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2014-10-03 424-320-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-10-03 424-351-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2014-10-03 424-352-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2014-10-03 424-355-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-10-03 424-361-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 CULVERCITY CA
2014-10-03 424-371-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-10-03 424-373-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN CMTN CA
2014-10-03 424-373-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN CMTN CA
2014-10-01 424-347-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LOMITA CA
2014-10-01 424-347-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LOMITA CA
2014-10-01 424-353-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2014-10-01 424-353-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2014-10-01 424-361-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CULVERCITY CA
2014-10-01 424-361-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CULVERCITY CA
2014-10-01 424-372-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2014-09-30 424-348-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2014-09-30 424-348-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2014-09-30 424-351-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2014-09-30 424-367-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C EL SEGUNDO CA
2014-09-30 424-367-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C EL SEGUNDO CA
2014-09-30 424-373-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CMTN CMTN CA
2014-09-29 424-346-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MALIBU CA
2014-09-29 424-610-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNMN SNMN CA
2014-09-29 424-610-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNMN SNMN CA
2014-09-25 424-347-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LOMITA CA
2014-09-24 424-346-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MALIBU CA
2014-09-24 424-358-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C TORRANCE CA
2014-09-24 424-358-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C TORRANCE CA
2014-09-24 424-371-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA

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.