NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2016-11-16 717-607 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LEWISTOWN PA
2016-11-16 779-915 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 WOODSTOCK IL
2016-11-16 859-320 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - KY 8406 COVINGTON KY
2016-11-16 959-282 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HARTFORD CT
2016-11-15 267-726 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 PHPHSBZN40 PA
2016-11-15 313-752 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN1 MI
2016-11-15 562-471 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LONG BEACH CA
2016-11-15 586-551 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 MT CLEMENS MI
2016-11-15 614-897 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 COLUMBUS OH
2016-11-15 786-920 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2016-11-15 810-263 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 BRIGHTON MI
2016-11-15 951-418 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 PERRIS CA
2016-11-14 267-822 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2016-11-14 425-589 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2016-11-14 470-787 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J ATLANTA NW GA
2016-11-14 484-627 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 EASTON PA
2016-11-14 484-657 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 COATESVL PA
2016-11-14 515-380 0–9 XXXall 10 · 2 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J DES MOINES IA
2016-11-14 562-306 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 DOWNEY CA
2016-11-14 563-253 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS 1170 TIPTON IA
2016-11-14 661-314 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 BKFD MAIN CA
2016-11-14 667-352 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 ABERDEEN MD
2016-11-14 747-260 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 SNFN SNFN CA
2016-11-14 786-956 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2016-11-14 786-961 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 MIAMI FL
2016-11-14 904-907 0–9 XXXall 10 · 6 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 ST JOHNS FL
2016-11-14 940-938 0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → SANTA ROSA TELEPHONE COOPERATIVE, INC. 4046 CHILDRESS TX
2016-11-14 956-348 0–9 XXXall 10 · 7 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D EDINBURG TX
2016-11-14 956-732 0–9 XXXall 10 · 3 holders which blocks → FOREMOST TELECOMMUNICATIONS CORPORATION - TX 319D MCALLEN TX
2016-11-11 224-421 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ARLIGTNHTS IL
2016-11-11 224-428 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ALGONQUIN IL
2016-11-11 225-605 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 8764 CLINTON LA
2016-11-11 323-994 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2016-11-11 438-212 not yet reported which blocks → Bell Canada 8050 Montreal —
2016-11-11 626-413 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LA PUENTE CA
2016-11-11 626-426 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 COVINA CA
2016-11-11 647-412 not yet reported which blocks → Bell Canada 8051 Toronto —
2016-11-11 731-507 0–9 XXXall 10 · 5 holders which blocks → JACKSON ENERGY AUTHORITY - TN 150G UNION CITY TN
2016-11-11 785-351 0XXX which blocks → RAINBOW COMMUNICATIONS, LLC - KS 330D WHITECLOUD KS
2016-11-11 807-702 not yet reported which blocks → Bell Canada 8051 Hudson —
2016-11-11 807-703 not yet reported which blocks → Bell Canada 8051 Fort Frances —
2016-11-11 807-704 not yet reported which blocks → Bell Canada 8051 Devlin —
2016-11-10 224-602 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MUNDELEIN IL
2016-11-10 240-690 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - DC 7529 GAITHERSBG MD
2016-11-10 463-701 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 INDIANAPLS IN
2016-11-10 651-508 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-11-10 667-400 0–9 XXXall 10 · 4 holders which blocks → BARR TELL USA, INC. 964H BALTIMORE MD
2016-11-10 702-844 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2016-11-10 708-690 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLUEISLAND IL
2016-11-10 778-597 not yet reported which blocks → TELUS 8086 Osoyoos —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.