NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

66 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. 66
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
2006-12-20 503-863-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2006-12-20 602-862-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-20 602-865-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-20 623-271-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-20 623-792-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-20 661-753-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SNCA NHCS CA
2006-12-20 801-289-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-12-20 801-703-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-12-20 801-953-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2006-12-19 213-769-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 10 CA
2006-12-19 219-487-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GARY IN
2006-12-19 408-466-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2006-12-19 408-466-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2006-12-19 408-466-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2006-12-19 408-466-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CAMPBELL CA
2006-12-19 424-205-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2006-12-19 440-506-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELYRIA OH
2006-12-19 541-848-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BEND OR
2006-12-19 559-415-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HANFORD CA
2006-12-19 562-316-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2006-12-19 626-465-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2006-12-19 760-596-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VICTORVL CA
2006-12-19 773-757-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2006-12-19 773-757-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2006-12-19 773-757-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2006-12-19 847-704-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-12-19 847-704-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2006-12-18 254-768-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KILLEEN TX
2006-12-18 254-768-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KILLEEN TX
2006-12-18 323-348-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2006-12-18 360-270-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LONGVIEW WA
2006-12-18 408-334-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNJS WEST CA
2006-12-18 432-212-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TERMINAL TX
2006-12-18 432-212-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TERMINAL TX
2006-12-18 760-391-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 INDIO CA
2006-12-18 773-757-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2006-12-18 773-757-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CHICGOZN08 IL
2006-12-18 818-941-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2006-12-15 216-258-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2006-12-15 310-754-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNMN MRVS CA
2006-12-15 310-913-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNMN MRVS CA
2006-12-15 323-539-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2006-12-15 424-212-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 REDONDO CA
2006-12-15 424-288-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2006-12-15 505-488-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GALLUP NM
2006-12-15 806-831-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LUBBOCK TX
2006-12-15 806-831-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LUBBOCK TX
2006-12-14 206-422-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-12-14 206-422-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-12-14 206-422-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA

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.