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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXAssigneeOCNRate centerState
2016-01-20 541-666 T-MOBILE USA, INC. 6529 ALBANY OR
2016-01-19 775-515 T-MOBILE USA, INC. 6529 CARSONCITY NV
2016-01-18 682-716 T-MOBILE USA, INC. 6529 ARLINGTON TX
2016-01-15 469-954 T-MOBILE USA, INC. 6529 FORNEY TX
2016-01-15 510-345 T-MOBILE USA, INC. 6529 OKLD BKLY CA
2016-01-15 650-334 T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-01-15 971-517 T-MOBILE USA, INC. 6529 MCMINNVL OR
2016-01-14 702-881 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2016-01-13 253-392 T-MOBILE USA, INC. 6529 TACOMAWVLY WA
2016-01-13 915-352 T-MOBILE USA, INC. 6529 EL PASO TX
2016-01-11 312-539 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2016-01-11 312-838 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2015-12-15 505-557 T-MOBILE USA, INC. 6529 SANTA FE NM
2015-12-11 385-630 T-MOBILE USA, INC. 6529 SALT LAKE UT
2015-12-08 208-509 T-MOBILE USA, INC. 6529 BOISE ID
2015-12-07 805-825 T-MOBILE USA, INC. 6529 ARROYOGRND CA
2015-11-25 262-475 T-MOBILE USA, INC. 6529 LAKEGENEVA WI
2015-11-25 469-987 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2015-11-24 210-847 T-MOBILE USA, INC. 6529 SANANTONIO TX
2015-11-24 469-982 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2015-11-24 469-988 T-MOBILE USA, INC. 6529 ENNIS TX
2015-11-24 469-990 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2015-11-24 682-347 T-MOBILE USA, INC. 6529 ARLINGTON TX
2015-11-24 682-847 T-MOBILE USA, INC. 6529 CLEBURNE TX
2015-11-24 737-206 T-MOBILE USA, INC. 6529 BASTROP TX
2015-11-24 737-618 T-MOBILE USA, INC. 6529 LAMPASAS TX
2015-11-23 626-313 T-MOBILE USA, INC. 6529 ALHAMBRA CA
2015-11-23 657-296 T-MOBILE USA, INC. 6529 GARDEN GRV CA
2015-11-17 323-716 T-MOBILE USA, INC. 6529 LSAN DA 11 CA
2015-11-16 213-421 T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2015-11-13 469-856 T-MOBILE USA, INC. 6529 MIDLOTHIAN TX
2015-11-06 206-899 T-MOBILE USA, INC. 6529 BAINBDG IS WA
2015-11-05 469-427 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2015-11-02 530-782 T-MOBILE USA, INC. 6529 REDDING CA
2015-10-23 224-540 T-MOBILE USA, INC. 6529 ROUND LAKE IL
2015-10-23 469-970 T-MOBILE USA, INC. 6529 FORNEY TX
2015-10-23 626-493 T-MOBILE USA, INC. 6529 ALHAMBRA CA
2015-10-23 872-724 T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2015-10-23 937-993 T-MOBILE USA, INC. 6529 DAYTON OH
2015-10-19 657-445 T-MOBILE USA, INC. 6529 FULLERTON CA
2015-10-15 425-365 T-MOBILE USA, INC. 6529 BELLEVUE WA
2015-10-08 216-727 T-MOBILE USA, INC. 6529 CLEVELAND OH
2015-10-08 234-602 T-MOBILE USA, INC. 6529 HUDSON OH
2015-10-08 626-341 T-MOBILE USA, INC. 6529 LA PUENTE CA
2015-10-08 708-894 T-MOBILE USA, INC. 6529 TINLEYPARK IL
2015-10-07 440-661 T-MOBILE USA, INC. 6529 ASHTABULA OH
2015-10-07 708-640 T-MOBILE USA, INC. 6529 HARVEY IL
2015-10-05 530-764 T-MOBILE USA, INC. 6529 OROVILLE CA
2015-09-30 360-842 T-MOBILE USA, INC. 6529 BREMERTON WA
2015-09-29 702-969 T-MOBILE USA, INC. 6529 MESQUITE NV

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.