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
2013-09-10 720-372-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2013-09-10 720-372-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2013-09-10 831-789-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SALINAS CA
2013-09-10 949-245-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CAPITRNVLY CA
2013-09-10 951-376-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2013-09-09 385-888-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2013-09-09 512-986-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LEANDER TX
2013-09-06 702-910-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-06 702-910-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-06 702-910-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-06 702-910-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-06 702-910-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS VEGAS NV
2013-09-06 708-737-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2013-09-06 708-737-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2013-09-06 708-737-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2013-09-06 708-737-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2013-09-05 619-373-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHULAVISTA CA
2013-09-05 949-247-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2013-09-04 262-765-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WAUKESHA WI
2013-09-04 262-765-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 WAUKESHA WI
2013-09-04 425-209-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-09-04 425-209-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2013-09-04 501-408-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BENTON AR
2013-09-04 515-357-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 AMES IA
2013-09-04 515-357-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 AMES IA
2013-09-04 719-453-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 COLORDOSPG CO
2013-09-04 719-453-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 COLORDOSPG CO
2013-09-04 720-589-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2013-09-04 915-206-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-04 915-216-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-04 915-242-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EL PASO TX
2013-09-03 216-801-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-09-03 216-801-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-09-03 216-801-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-09-03 216-801-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2013-09-03 316-803-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NEWTON KS
2013-09-03 505-721-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GALLUP NM
2013-09-03 708-506-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2013-09-03 708-506-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2013-09-03 708-506-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2013-09-03 708-506-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2013-09-03 708-789-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2013-09-03 708-789-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ORLAND IL
2013-08-30 510-362-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HAYWARD CA
2013-08-30 559-644-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CARUTHERS CA
2013-08-30 619-452-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-08-30 619-452-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-08-30 661-390-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2013-08-30 661-448-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BKFD MAIN CA
2013-08-30 737-888-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 TAYLOR 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.