NumberResearch Membership · Data 09/25/2026

Recent thousands-block assignments

69 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026

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. 69
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
2010-12-13 304-910-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BLUEFIELD WV
2010-12-13 304-939-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2010-12-13 304-939-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2010-12-13 304-942-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HNTNGTNZN1 WV
2010-12-13 510-313-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 HRCUL-RODE CA
2010-12-13 559-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2010-12-13 681-945-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2010-12-13 681-945-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2010-12-13 681-945-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2010-12-13 681-945-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHRLSTNZN1 WV
2010-12-10 513-430-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-12-10 513-430-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CINCINNATI OH
2010-12-10 870-494-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-12-10 870-494-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 FORREST CY AR
2010-12-09 325-262-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN ANGELO TX
2010-12-09 512-200-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2010-12-09 512-200-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 AUSTIN TX
2010-12-09 650-889-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2010-12-09 925-309-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DANVILLE CA
2010-12-08 309-628-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALEDO IL
2010-12-08 702-347-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2010-12-08 702-637-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2010-12-08 702-637-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2010-12-08 702-637-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2010-12-07 206-430-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2010-12-07 206-430-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2010-12-07 260-585-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAGRANGE IN
2010-12-07 415-529-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFC CNTRL CA
2010-12-07 415-797-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELVEDERE CA
2010-12-07 425-247-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2010-12-07 661-390-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2010-12-07 815-386-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2010-12-07 815-386-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KANKAKEE IL
2010-12-06 319-529-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WATERLOO IA
2010-12-06 405-589-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2010-12-06 971-208-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SALEM OR
2010-12-06 971-267-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MCMINNVL OR
2010-12-03 360-610-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2010-12-03 360-720-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 OAK HARBOR WA
2010-12-03 360-821-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PTTOWNSEND WA
2010-12-03 509-387-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2010-12-03 509-426-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2010-12-03 509-440-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2010-12-03 650-621-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PALO ALTO CA
2010-12-03 773-554-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-03 773-556-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-03 773-557-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-03 773-850-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-03 773-850-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2010-12-03 773-850-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.