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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2017-01-18 812-906 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F BRUCEVILLE IN
2017-01-18 928-471 0–9 XXXall 10 · 4 holders which blocks → QWEST CORPORATION 9636 PAYSON AZ
2017-01-18 956-370 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F RIGRANDECY TX
2017-01-17 201-554 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - NJ 637C RUTHERFORD NJ
2017-01-17 213-288 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 01 CA
2017-01-17 346-243 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 BARKER TX
2017-01-17 346-244 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 SATSUMA TX
2017-01-17 346-245 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 STAFFORD TX
2017-01-17 346-288 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 BEACH CITY TX
2017-01-17 380-390 0–9 XXXall 10 · 4 holders which blocks → WIDE VOICE, LLC - OH 765H WORTHINGTN OH
2017-01-17 479-551 0–9 XXXall 10 · 6 holders which blocks → E. RITTER COMMUNICATIONS, LLC 128L FORT SMITH AR
2017-01-17 614-696 0–9 XXXall 10 · 6 holders which blocks → WIDE VOICE, LLC - OH 765H COLUMBUS OH
2017-01-17 646-971 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NWYRCYZN01 NY
2017-01-17 647-592 not yet reported which blocks → Videotron Ltd. 8306 Toronto —
2017-01-17 743-223 0–9 XXXall 10 · 5 holders which blocks → NORTH STATE COMMUNICATIONS ADVANCED SVCS, LLC-NC 361F GREENSBORO NC
2017-01-17 909-761 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 S BERNDINO CA
2017-01-17 931-291 0–9 XXXall 10 · 5 holders which blocks → JACKSON ENERGY AUTHORITY - TN 150G CLARKSVL TN
2017-01-17 934-470 0–9 XXXall 10 · 5 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NORTHPORT NY
2017-01-16 213-374 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 01 CA
2017-01-16 310-340 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HAWTHORNE CA
2017-01-16 310-554 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 CMTN CMTN CA
2017-01-16 312-270 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 CHICGOZN01 IL
2017-01-16 385-285 0–9 XXXall 10 · 4 holders which blocks → WIDE VOICE, LLC - UT 659H SALT LAKE UT
2017-01-16 505-772 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NM 5470 SANTA FE NM
2017-01-16 530-557 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NEVADACITY CA
2017-01-16 602-601 0–9 XXXall 10 · 5 holders which blocks → WIDE VOICE, LLC - AZ 410H PHOENIX AZ
2017-01-16 626-525 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ALHAMBRA CA
2017-01-16 657-352 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 WESTMINSTR CA
2017-01-16 661-403 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 PLDL PLDL CA
2017-01-16 802-636 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VT 005F BARRE VT
2017-01-16 863-656 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - FL 937C WINTER HVN FL
2017-01-13 213-660 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 01 CA
2017-01-13 562-358 0–9 XXXall 10 · 6 holders which blocks → METROPCS NETWORKS, LLC 899D WHITTIER CA
2017-01-13 626-503 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 ALHAMBRA CA
2017-01-13 908-373 0–9 XXXall 10 · 7 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BERNARDSVL NJ
2017-01-13 925-306 0–9 XXXall 10 · 6 holders which blocks → SONIC TELECOM, LLC - CA 433E ECONTRCOST CA
2017-01-12 239-235 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J MARCO IS FL
2017-01-12 313-426 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E DETROITZN1 MI
2017-01-12 414-676 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MILWAUKZN5 WI
2017-01-12 573-504 0XXX1XXX2XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E PUXICO MO
2017-01-12 573-802 0XXX1XXX2XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E RICHWOODS MO
2017-01-12 579-594 not yet reported which blocks → TELUS Mobility 8303 Granby —
2017-01-12 757-505 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F ONANCOCK VA
2017-01-12 757-568 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F COURTLAND VA
2017-01-12 757-829 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F PARKSLEY VA
2017-01-12 782-200 not yet reported which blocks → Bragg Communications Inc. 421G Halifax —
2017-01-12 803-677 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CAMDEN SC
2017-01-12 806-639 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J AMARILLO TX
2017-01-11 205-895 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL
2017-01-11 470-368 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NW GA

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.