NumberResearch Membership · Data 2026-04

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 2026-04

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
T-MOBILE USA, INC. 76
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
AssignedBlockAssigneeOCNRate centerState
2023-09-29 657-670-7XXX T-MOBILE USA, INC. 6529 WESTMINSTR CA
2023-09-29 657-679-6XXX T-MOBILE USA, INC. 6529 GARDEN GRV CA
2023-09-29 657-679-7XXX T-MOBILE USA, INC. 6529 GARDEN GRV CA
2023-09-29 657-698-9XXX T-MOBILE USA, INC. 6529 WESTMINSTR CA
2023-09-29 831-867-1XXX T-MOBILE USA, INC. 6529 MONTEREY CA
2023-09-29 831-867-2XXX T-MOBILE USA, INC. 6529 MONTEREY CA
2023-09-29 840-228-5XXX T-MOBILE USA, INC. 6529 COLTON CA
2023-09-29 840-228-6XXX T-MOBILE USA, INC. 6529 COLTON CA
2023-09-28 314-679-9XXX T-MOBILE USA, INC. 6529 ST LOUIS MO
2023-09-28 405-569-9XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2023-09-28 405-667-9XXX T-MOBILE USA, INC. 6529 OKLA CITY OK
2023-09-28 707-250-8XXX T-MOBILE USA, INC. 6529 VALLEJO CA
2023-09-28 707-250-9XXX T-MOBILE USA, INC. 6529 VALLEJO CA
2023-09-27 304-880-2XXX T-MOBILE USA, INC. 6529 SUMMERSVL WV
2023-09-27 304-880-9XXX T-MOBILE USA, INC. 6529 SUMMERSVL WV
2023-09-27 406-848-3XXX T-MOBILE USA, INC. 6529 GARDINER MT
2023-09-27 530-912-9XXX T-MOBILE USA, INC. 6529 TRUCKEE CA
2023-09-27 626-530-7XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-09-27 626-530-8XXX T-MOBILE USA, INC. 6529 LA PUENTE CA
2023-09-27 707-641-7XXX T-MOBILE USA, INC. 6529 VALLEJO CA
2023-09-27 707-753-5XXX T-MOBILE USA, INC. 6529 PTLM SWIFT CA
2023-09-27 707-753-6XXX T-MOBILE USA, INC. 6529 PTLM SWIFT CA
2023-09-27 925-878-3XXX T-MOBILE USA, INC. 6529 LAFAYETTE CA
2023-09-27 971-453-3XXX T-MOBILE USA, INC. 6529 SALEM OR
2023-09-27 971-453-4XXX T-MOBILE USA, INC. 6529 SALEM OR
2023-09-27 971-453-5XXX T-MOBILE USA, INC. 6529 SALEM OR
2023-09-26 213-728-8XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2023-09-26 213-728-9XXX T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2023-09-26 213-729-2XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-3XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-4XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-5XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-6XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-7XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-8XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-729-9XXX T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2023-09-26 213-734-9XXX T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2023-09-26 331-217-9XXX T-MOBILE USA, INC. 6529 LOMBARD IL
2023-09-26 530-972-9XXX T-MOBILE USA, INC. 6529 REDDING CA
2023-09-26 562-707-7XXX T-MOBILE USA, INC. 6529 NORWALK CA
2023-09-26 562-707-8XXX T-MOBILE USA, INC. 6529 NORWALK CA
2023-09-26 562-707-9XXX T-MOBILE USA, INC. 6529 NORWALK CA
2023-09-26 657-695-6XXX T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2023-09-26 657-695-7XXX T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2023-09-26 657-695-8XXX T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2023-09-26 657-695-9XXX T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2023-09-26 708-412-9XXX T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2023-09-26 708-893-1XXX T-MOBILE USA, INC. 6529 HARVEY IL
2023-09-26 708-913-6XXX T-MOBILE USA, INC. 6529 HARVEY IL
2023-09-26 872-200-0XXX T-MOBILE USA, INC. 6529 CHICGOZN06 IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.