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
2001-04-03 580-647 T-MOBILE USA, INC. 6529 LAWTON OK
2001-04-02 630-290 T-MOBILE USA, INC. 6529 LOMBARD IL
2001-04-02 630-802 T-MOBILE USA, INC. 6529 SUGARGROVE IL
2001-04-02 630-935 T-MOBILE USA, INC. 6529 LOMBARD IL
2001-04-02 708-351 T-MOBILE USA, INC. 6529 CHICAGOHTS IL
2001-04-02 708-945 T-MOBILE USA, INC. 6529 ORLAND IL
2001-04-02 847-809 T-MOBILE USA, INC. 6529 BARRINGTON IL
2001-04-01 608-724 T-MOBILE USA, INC. 6529 LA CROSSE WI
2001-03-30 253-273 T-MOBILE USA, INC. 6529 TACOMA WA
2001-03-30 574-265 T-MOBILE USA, INC. 6529 WARSAW IN
2001-03-26 859-743 T-MOBILE USA, INC. 6529 COVINGTON KY
2001-03-26 937-302 T-MOBILE USA, INC. 6529 WILMINGTON OH
2001-03-23 775-219 T-MOBILE USA, INC. 6529 RENO NV
2001-03-22 510-932 T-MOBILE USA, INC. 6529 RICHMOND CA
2001-03-22 541-212 T-MOBILE USA, INC. 6529 ONTARIO OR
2001-03-22 541-228 T-MOBILE USA, INC. 6529 EUGENE OR
2001-03-22 541-252 T-MOBILE USA, INC. 6529 COOS BAY OR
2001-03-21 208-450 T-MOBILE USA, INC. 6529 KETCHUM ID
2001-03-20 330-541 T-MOBILE USA, INC. 6529 KENT OH
2001-03-16 309-721 T-MOBILE USA, INC. 6529 ROCKISLAND IL
2001-03-16 575-302 T-MOBILE USA, INC. 6529 CARLSBAD NM
2001-03-15 214-298 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-03-15 562-587 T-MOBILE USA, INC. 6529 WHITTIER CA
2001-03-15 708-724 T-MOBILE USA, INC. 6529 LA GRANGE IL
2001-03-14 307-203 T-MOBILE USA, INC. 6529 JACKSON WY
2001-03-13 216-835 T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-03-13 432-923 T-MOBILE USA, INC. 6529 MONAHANS TX
2001-03-13 432-924 T-MOBILE USA, INC. 6529 ODESSA TX
2001-03-12 928-279 T-MOBILE USA, INC. 6529 KINGMAN AZ
2001-03-09 773-619 T-MOBILE USA, INC. 6529 CHICGOZN03 IL
2001-03-09 773-851 T-MOBILE USA, INC. 6529 CHICGOZN07 IL
2001-03-09 847-708 T-MOBILE USA, INC. 6529 NORTHBROOK IL
2001-03-06 219-808 T-MOBILE USA, INC. 6529 GARY IN
2001-03-06 513-678 T-MOBILE USA, INC. 6529 CINCINNATI OH
2001-03-01 530-567 T-MOBILE USA, INC. 6529 RED BLUFF CA
2001-03-01 916-796 T-MOBILE USA, INC. 6529 RIO LINDA CA
2001-02-28 310-936 T-MOBILE USA, INC. 6529 CULVERCITY CA
2001-02-28 937-380 T-MOBILE USA, INC. 6529 DAYTON OH
2001-02-27 405-361 T-MOBILE USA, INC. 6529 OKLA CITY OK
2001-02-27 512-563 T-MOBILE USA, INC. 6529 AUSTIN TX
2001-02-26 214-938 T-MOBILE USA, INC. 6529 GRANDPRARI TX
2001-02-26 216-324 T-MOBILE USA, INC. 6529 CLEVELAND OH
2001-02-23 815-919 T-MOBILE USA, INC. 6529 JOLIET IL
2001-02-22 208-573 T-MOBILE USA, INC. 6529 BOISE ID
2001-02-22 619-459 T-MOBILE USA, INC. 6529 CORONADO CA
2001-02-22 949-232 T-MOBILE USA, INC. 6529 IRVINE CA
2001-02-20 208-407 T-MOBILE USA, INC. 6529 BOISE ID
2001-02-20 325-956 T-MOBILE USA, INC. 6529 KINGSLAND TX
2001-02-20 720-312 T-MOBILE USA, INC. 6529 DENVER CO
2001-02-20 720-313 T-MOBILE USA, INC. 6529 DENVER CO

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.