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
2014-12-15 424-381 T-MOBILE USA, INC. 6529 CMTN CMTN CA
2014-12-15 951-446 T-MOBILE USA, INC. 6529 ARLINGTON CA
2014-12-10 501-510 T-MOBILE USA, INC. 6529 LONOKE AR
2014-12-08 312-934 T-MOBILE USA, INC. 6529 CHICGOZN01 IL
2014-12-01 530-552 T-MOBILE USA, INC. 6529 OROVILLE CA
2014-11-25 510-753 T-MOBILE USA, INC. 6529 OKLD TRNID CA
2014-11-25 970-822 T-MOBILE USA, INC. 6529 GRAND JCT CO
2014-11-24 210-992 T-MOBILE USA, INC. 6529 SANANTONIO TX
2014-11-24 210-993 T-MOBILE USA, INC. 6529 SANANTONIO TX
2014-11-24 530-786 T-MOBILE USA, INC. 6529 AUBN MAIN CA
2014-11-24 619-642 T-MOBILE USA, INC. 6529 SNDG SNDG CA
2014-11-21 682-313 T-MOBILE USA, INC. 6529 ARLINGTON TX
2014-11-21 760-442 T-MOBILE USA, INC. 6529 BRAWLEY CA
2014-11-21 760-626 T-MOBILE USA, INC. 6529 FALLBROOK CA
2014-11-21 909-674 T-MOBILE USA, INC. 6529 REDLANDS CA
2014-11-14 224-504 T-MOBILE USA, INC. 6529 LIBERTYVL IL
2014-11-13 262-583 T-MOBILE USA, INC. 6529 RACINE WI
2014-11-11 415-650 T-MOBILE USA, INC. 6529 SNFC MT-EV CA
2014-11-11 559-754 T-MOBILE USA, INC. 6529 VISALIA CA
2014-11-11 903-426 T-MOBILE USA, INC. 6529 TYLER TX
2014-11-10 424-392 T-MOBILE USA, INC. 6529 REDONDO CA
2014-11-10 909-662 T-MOBILE USA, INC. 6529 CHINO CA
2014-11-07 224-435 T-MOBILE USA, INC. 6529 GLENVIEW IL
2014-11-07 314-793 T-MOBILE USA, INC. 6529 LADUE MO
2014-11-07 559-373 T-MOBILE USA, INC. 6529 MADERA CA
2014-11-07 747-231 T-MOBILE USA, INC. 6529 GLENDALE CA
2014-11-07 971-331 T-MOBILE USA, INC. 6529 PORTLAND OR
2014-11-06 224-727 T-MOBILE USA, INC. 6529 DEERFIELD IL
2014-11-06 626-295 T-MOBILE USA, INC. 6529 LA PUENTE CA
2014-11-04 951-437 T-MOBILE USA, INC. 6529 PERRIS CA
2014-11-03 650-338 T-MOBILE USA, INC. 6529 HALFMOONBY CA
2014-11-03 971-716 T-MOBILE USA, INC. 6529 MCMINNVL OR
2014-10-27 331-253 T-MOBILE USA, INC. 6529 LEMONT IL
2014-10-24 216-417 T-MOBILE USA, INC. 6529 CLEVELAND OH
2014-10-24 224-479 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2014-10-24 224-503 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2014-10-24 510-309 T-MOBILE USA, INC. 6529 ELSBR-PINL CA
2014-10-24 520-658 T-MOBILE USA, INC. 6529 TUCSON AZ
2014-10-24 708-963 T-MOBILE USA, INC. 6529 ORLAND IL
2014-10-22 385-424 T-MOBILE USA, INC. 6529 KAYSVILLE UT
2014-10-22 505-485 T-MOBILE USA, INC. 6529 ALBUQURQUE NM
2014-10-21 702-626 T-MOBILE USA, INC. 6529 LAS VEGAS NV
2014-10-20 415-966 T-MOBILE USA, INC. 6529 BELVEDERE CA
2014-10-20 425-287 T-MOBILE USA, INC. 6529 BOTHELL WA
2014-10-20 512-214 T-MOBILE USA, INC. 6529 SAN MARCOS TX
2014-10-20 619-432 T-MOBILE USA, INC. 6529 SNDG SNDG CA
2014-10-20 619-598 T-MOBILE USA, INC. 6529 CHULAVISTA CA
2014-10-20 669-247 T-MOBILE USA, INC. 6529 SNJS NORTH CA
2014-10-20 669-254 T-MOBILE USA, INC. 6529 CAMPBELL CA
2014-10-17 323-597 T-MOBILE USA, INC. 6529 MONTEBELLO CA

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.