NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

76 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
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
2023-04-20 479-490-7XXX T-MOBILE USA, INC. 6529 ALMA AR
2023-04-20 479-490-8XXX T-MOBILE USA, INC. 6529 ALMA AR
2023-04-19 618-873-3XXX T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-04-19 618-873-5XXX T-MOBILE USA, INC. 6529 BELLEVILLE IL
2023-04-19 779-775-0XXX T-MOBILE USA, INC. 6529 DE KALB IL
2023-04-19 779-775-7XXX T-MOBILE USA, INC. 6529 DE KALB IL
2023-04-19 779-775-8XXX T-MOBILE USA, INC. 6529 DE KALB IL
2023-04-19 779-775-9XXX T-MOBILE USA, INC. 6529 DE KALB IL
2023-04-19 920-381-7XXX T-MOBILE USA, INC. 6529 APPLETON WI
2023-04-19 920-760-9XXX T-MOBILE USA, INC. 6529 APPLETON WI
2023-04-08 234-296-2XXX T-MOBILE USA, INC. 6529 KENT OH
2023-04-08 234-296-3XXX T-MOBILE USA, INC. 6529 KENT OH
2023-04-08 937-514-2XXX T-MOBILE USA, INC. 6529 FRANKLIN OH
2023-04-08 937-514-3XXX T-MOBILE USA, INC. 6529 FRANKLIN OH
2023-04-07 574-221-7XXX T-MOBILE USA, INC. 6529 NAPPANEE IN
2023-04-07 574-356-1XXX T-MOBILE USA, INC. 6529 NAPPANEE IN
2023-04-07 580-826-7XXX T-MOBILE USA, INC. 6529 ARDMORE OK
2023-04-07 580-826-8XXX T-MOBILE USA, INC. 6529 ARDMORE OK
2023-04-05 430-413-6XXX T-MOBILE USA, INC. 6529 GREENVILLE TX
2023-04-05 430-413-7XXX T-MOBILE USA, INC. 6529 GREENVILLE TX
2023-04-05 430-413-8XXX T-MOBILE USA, INC. 6529 GREENVILLE TX
2023-04-05 430-413-9XXX T-MOBILE USA, INC. 6529 GREENVILLE TX
2023-04-05 817-650-2XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 817-650-3XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 817-650-4XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 817-650-5XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 817-650-6XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 817-650-7XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 817-650-9XXX T-MOBILE USA, INC. 6529 GRANBURY TX
2023-04-05 945-238-5XXX T-MOBILE USA, INC. 6529 TERRELL TX
2023-04-05 945-238-6XXX T-MOBILE USA, INC. 6529 TERRELL TX
2023-04-05 945-238-9XXX T-MOBILE USA, INC. 6529 TERRELL TX
2023-04-05 945-599-9XXX T-MOBILE USA, INC. 6529 TERRELL TX
2023-03-29 234-946-1XXX T-MOBILE USA, INC. 6529 COLUMBIANA OH
2023-03-29 440-825-7XXX T-MOBILE USA, INC. 6529 ASHTABULA OH
2023-03-29 937-483-3XXX T-MOBILE USA, INC. 6529 GEORGETOWN OH
2023-03-27 432-423-5XXX T-MOBILE USA, INC. 6529 FTSTOCKTON TX
2023-03-27 432-423-7XXX T-MOBILE USA, INC. 6529 FTSTOCKTON TX
2023-03-27 830-496-7XXX T-MOBILE USA, INC. 6529 KERRVILLE TX
2023-03-27 830-496-8XXX T-MOBILE USA, INC. 6529 KERRVILLE TX
2023-03-27 830-496-9XXX T-MOBILE USA, INC. 6529 KERRVILLE TX
2023-03-27 830-955-4XXX T-MOBILE USA, INC. 6529 KERRVILLE TX
2023-03-27 945-240-3XXX T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2023-03-27 945-240-5XXX T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2023-03-27 945-240-6XXX T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2023-03-27 945-240-7XXX T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2023-03-27 945-240-8XXX T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2023-03-24 509-589-9XXX T-MOBILE USA, INC. 6529 NEWPORT WA
2023-03-23 870-651-7XXX T-MOBILE USA, INC. 6529 LAKE CITY AR
2023-03-17 572-216-8XXX T-MOBILE USA, INC. 6529 CHANDLER OK

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.