NumberResearch Membership · Data 09/26/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026

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. 68
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
2013-05-21 872-484-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2013-05-21 872-484-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2013-05-21 920-791-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BEAVER DAM WI
2013-05-20 307-220-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHEYENNE WY
2013-05-20 307-220-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHEYENNE WY
2013-05-20 314-203-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-05-20 314-203-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-05-20 314-282-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-05-20 314-296-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-05-20 405-240-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHANDLER OK
2013-05-20 424-332-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2013-05-20 510-362-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA
2013-05-20 580-665-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ADA OK
2013-05-20 918-841-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-05-20 918-841-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BARTLESVL OK
2013-05-17 323-498-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2013-05-17 360-558-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2013-05-17 360-558-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2013-05-17 408-442-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LOS GATOS CA
2013-05-17 559-369-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 FRESNO CA
2013-05-17 719-424-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 COLORDOSPG CO
2013-05-15 206-602-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SEATTLE WA
2013-05-15 224-203-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-203-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-203-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-316-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-316-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-316-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORTHBROOK IL
2013-05-15 224-324-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-324-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-324-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 224-324-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2013-05-15 385-888-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2013-05-15 425-435-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-05-15 505-639-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2013-05-15 505-639-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2013-05-15 505-639-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2013-05-15 702-613-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2013-05-14 208-789-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2013-05-14 425-419-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2013-05-14 509-379-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2013-05-14 509-491-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2013-05-14 510-646-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OKLD BKLY CA
2013-05-14 520-499-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2013-05-14 520-499-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TUCSON AZ
2013-05-14 682-582-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2013-05-14 682-582-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2013-05-14 682-582-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2013-05-14 682-582-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX
2013-05-14 682-582-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WEATHERFD TX

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.