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
2013-09-23 618-802-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 GRANITE CY IL
2013-09-23 619-450-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-09-23 619-704-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-09-23 619-704-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-09-23 682-802-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLINGTON TX
2013-09-23 714-332-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BREA CA
2013-09-23 915-282-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-23 915-832-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-20 253-204-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2013-09-20 314-201-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2013-09-20 314-201-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2013-09-20 314-201-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2013-09-20 314-201-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LADUE MO
2013-09-20 314-728-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-09-20 314-728-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-09-20 314-728-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-09-20 314-728-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-09-20 314-728-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ST LOUIS MO
2013-09-20 385-439-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2013-09-20 408-816-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SNJS WEST CA
2013-09-20 414-249-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-09-20 414-249-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-09-20 414-249-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILWAUKZN1 WI
2013-09-20 415-688-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2013-09-20 559-900-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLOVIS CA
2013-09-20 619-382-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2013-09-20 626-225-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2013-09-20 626-461-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ARCADIA CA
2013-09-20 714-340-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 YORBALINDA CA
2013-09-20 775-360-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RENO NV
2013-09-20 808-725-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2013-09-20 808-725-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HONOLULU HI
2013-09-20 909-485-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ARROWHEAD CA
2013-09-20 915-216-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-20 915-216-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-20 915-216-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-20 915-216-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-20 915-242-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-19 208-789-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BOISE ID
2013-09-19 385-722-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2013-09-19 505-219-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2013-09-19 602-559-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-09-19 602-559-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-09-19 602-559-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-09-19 623-500-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-09-19 623-500-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-09-19 623-500-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2013-09-19 702-910-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-19 702-910-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-19 940-745-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MINERLWLLS 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.