NumberResearch Membership · Data 2026-04

Recent prefix assignments

5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.

Most active assignees, last 30 days
T-MOBILE USA, INC. 5
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 NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
217-512 T-MOBILE USA, INC. 6529 CHARLESTON IL
217-519 T-MOBILE USA, INC. 6529 DECATUR IL
217-520 T-MOBILE USA, INC. 6529 DECATUR IL
217-553 T-MOBILE USA, INC. 6529 SPRINGFLD IL
217-570 T-MOBILE USA, INC. 6529 CLINTON IL
217-637 T-MOBILE USA, INC. 6529 CHAMPAURBN IL
217-638 T-MOBILE USA, INC. 6529 SPRINGFLD IL
217-719 T-MOBILE USA, INC. 6529 JACKSONVL IL
217-721 T-MOBILE USA, INC. 6529 CHAMPAURBN IL
217-750 T-MOBILE USA, INC. 6529 LINCOLN IL
217-766 T-MOBILE USA, INC. 6529 CHAMPAURBN IL
217-848 T-MOBILE USA, INC. 6529 DECATUR IL
217-962 T-MOBILE USA, INC. 6529 MATTOON IL
219-201 T-MOBILE USA, INC. 6529 GARY IN
219-331 T-MOBILE USA, INC. 6529 PORTAGE IN
219-512 T-MOBILE USA, INC. 6529 GARY IN
219-613 T-MOBILE USA, INC. 6529 CROWNPOINT IN
219-614 T-MOBILE USA, INC. 6529 GARY IN
219-678 T-MOBILE USA, INC. 6529 GARY IN
219-898 T-MOBILE USA, INC. 6529 MICHIGANCY IN
224-400 T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
224-424 T-MOBILE USA, INC. 6529 LIBERTYVL IL
224-550 T-MOBILE USA, INC. 6529 ELK GROVE IL
253-202 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
253-226 T-MOBILE USA, INC. 6529 TACOMA WA
253-227 T-MOBILE USA, INC. 6529 TACOMA WA
253-228 T-MOBILE USA, INC. 6529 TACOMA WA
253-230 T-MOBILE USA, INC. 6529 TACOMA WA
253-232 T-MOBILE USA, INC. 6529 TACOMA WA
253-261 T-MOBILE USA, INC. 6529 AUBURN WA
253-297 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
253-334 T-MOBILE USA, INC. 6529 AUBURN WA
253-335 T-MOBILE USA, INC. 6529 AUBURN WA
253-376 T-MOBILE USA, INC. 6529 TACOMA WA
253-377 T-MOBILE USA, INC. 6529 TACOMA WA
253-405 T-MOBILE USA, INC. 6529 TACOMA WA
253-431 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
253-468 T-MOBILE USA, INC. 6529 TACOMA WA
253-486 T-MOBILE USA, INC. 6529 AUBURN WA
253-576 T-MOBILE USA, INC. 6529 TACOMA WA
253-640 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
253-653 T-MOBILE USA, INC. 6529 AUBURN WA
253-831 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
253-861 T-MOBILE USA, INC. 6529 TACOMA WA
253-921 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
253-951 T-MOBILE USA, INC. 6529 AUBURN WA
253-961 T-MOBILE USA, INC. 6529 TACOMA WA
253-988 T-MOBILE USA, INC. 6529 TACOMA WA
254-214 T-MOBILE USA, INC. 6529 WACO TX
254-338 T-MOBILE USA, INC. 6529 KILLEEN TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.