NumberResearch Membership · Data 09/27/2026

Recent thousands-block assignments

68 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/27/2026

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
2015-10-05 216-512-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-10-05 216-512-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-10-05 216-512-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-10-05 216-512-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-10-05 224-469-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2015-10-05 224-469-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2015-10-05 224-469-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2015-10-05 224-469-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WAUKEGAN IL
2015-10-05 530-764-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OROVILLE CA
2015-10-05 618-556-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 JERSEYVL IL
2015-10-05 618-556-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 JERSEYVL IL
2015-10-05 626-420-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2015-10-05 626-420-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2015-10-05 708-864-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TINLEYPARK IL
2015-10-05 708-864-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TINLEYPARK IL
2015-10-05 708-904-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 TINLEYPARK IL
2015-10-05 708-904-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 TINLEYPARK IL
2015-10-05 708-904-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TINLEYPARK IL
2015-10-02 440-850-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2015-10-02 440-850-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2015-10-02 440-850-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ASHTABULA OH
2015-10-02 501-914-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 501-914-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 501-914-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 501-914-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 501-914-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 501-914-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 501-914-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LITTLEROCK AR
2015-10-02 630-822-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2015-10-02 630-822-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2015-10-02 630-822-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2015-10-02 630-822-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2015-10-02 630-822-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HINSDALE IL
2015-10-02 708-517-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 HARVEY IL
2015-10-01 208-997-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MOSCOW ID
2015-10-01 650-942-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MILLBRAE CA
2015-09-30 360-842-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2015-09-30 702-969-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2015-09-30 702-969-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MESQUITE NV
2015-09-28 213-372-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2015-09-28 360-726-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2015-09-28 360-810-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2015-09-28 442-278-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VALLEY CTR CA
2015-09-28 510-422-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OKLD FRTVL CA
2015-09-28 541-799-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EUGENE OR
2015-09-28 562-451-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LA HABRA CA
2015-09-28 562-451-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LA HABRA CA
2015-09-28 708-964-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2015-09-28 708-964-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2015-09-28 708-964-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 CHICAGOHTS IL

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.