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
2014-07-21 775-440-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 RENO NV
2014-07-21 775-440-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RENO NV
2014-07-18 575-449-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LAS CRUCES NM
2014-07-17 224-818-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ROUND LAKE IL
2014-07-17 253-391-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2014-07-17 253-391-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 AUBURN WA
2014-07-17 331-254-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SUGARGROVE IL
2014-07-17 331-254-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SUGARGROVE IL
2014-07-17 415-769-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2014-07-17 415-769-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFC JUNPR CA
2014-07-17 415-941-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2014-07-17 509-319-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2014-07-17 510-556-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 FRNK MAIN CA
2014-07-17 559-644-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CARUTHERS CA
2014-07-17 626-559-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2014-07-17 626-559-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LA PUENTE CA
2014-07-17 661-606-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ARVIN CA
2014-07-17 714-804-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BREA CA
2014-07-17 714-804-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BREA CA
2014-07-17 805-270-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARROYOGRND CA
2014-07-17 818-423-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2014-07-17 949-537-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 IRVINE CA
2014-07-17 951-380-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2014-07-16 224-806-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2014-07-16 424-342-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-07-16 425-219-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2014-07-16 619-493-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2014-07-16 619-493-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL CAJON CA
2014-07-16 650-713-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2014-07-16 805-539-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ATASCADERO CA
2014-07-16 847-429-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2014-07-16 847-468-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2014-07-16 847-468-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ELGIN IL
2014-07-16 858-281-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LA JOLLA CA
2014-07-16 858-281-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LA JOLLA CA
2014-07-16 916-896-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELK GROVE CA
2014-07-16 925-481-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ANTIOCH CA
2014-07-15 385-216-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2014-07-15 385-216-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2014-07-15 385-216-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2014-07-15 505-339-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GALLUP NM
2014-07-15 575-297-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 TRUTHCQNCS NM
2014-07-15 669-233-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 LOS GATOS CA
2014-07-15 669-233-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LOS GATOS CA
2014-07-15 720-767-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2014-07-15 720-767-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2014-07-15 720-767-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 DENVER CO
2014-07-15 808-319-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HILO HI
2014-07-15 808-319-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HILO HI
2014-07-15 808-319-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HILO HI

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.