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
2006-12-14 206-422-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-12-14 206-422-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-12-14 206-422-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-12-14 206-422-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2006-12-14 303-243-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2006-12-14 309-750-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BLOOMINGTN IL
2006-12-14 323-354-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2006-12-14 323-641-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2006-12-14 330-209-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CANTON OH
2006-12-14 425-780-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2006-12-14 562-646-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2006-12-14 626-646-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 COVINA CA
2006-12-14 630-457-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GENEVA IL
2006-12-14 650-452-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2006-12-14 714-548-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WESTMINSTR CA
2006-12-14 714-548-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WESTMINSTR CA
2006-12-14 760-536-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VISTA CA
2006-12-14 760-808-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PALM SPG CA
2006-12-14 916-533-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SCRM MAIN CA
2006-12-14 970-986-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRAND JCT CO
2006-12-13 580-458-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAWTON OK
2006-12-13 760-978-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OCSD OCSD CA
2006-12-13 773-537-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2006-12-13 773-598-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CHICGOZN04 IL
2006-12-13 801-928-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2006-12-13 814-403-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2006-12-13 818-941-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2006-12-12 208-357-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 IDAHOFALLS ID
2006-12-12 432-599-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MIDLAND TX
2006-12-12 469-684-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2006-12-12 469-684-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2006-12-12 469-684-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2006-12-12 469-684-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2006-12-12 469-684-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 GRANDPRARI TX
2006-12-12 801-616-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2006-12-11 253-880-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2006-12-11 316-308-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WICHITA KS
2006-12-11 323-649-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2006-12-11 425-502-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-12-11 602-810-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 602-810-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 602-810-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 602-810-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 602-810-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 608-738-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2006-12-11 608-738-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA CROSSE WI
2006-12-11 623-414-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 623-414-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 623-414-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2006-12-11 626-213-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL MONTE CA

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.