NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2022-10-31 771-218 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2022-10-31 830-384 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 HONDO TX
2022-10-31 848-339 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J ASBURYPARK NJ
2022-10-31 904-871 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C PNTVDRABCH FL
2022-10-28 213-691 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2022-10-28 213-696 0–9 XXXall 10 · 3 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 07 CA
2022-10-28 326-208 1XXX2XXX3XXX4XXX7XXX · 2 holders which blocks → NUSO, LLC 732J LIBERTY OH
2022-10-28 330-582 1XXX2XXX which blocks → NUSO, LLC 732J DELLROY OH
2022-10-28 343-322 not yet reported which blocks → Videotron Ltd. 787G Ottawa-Hull —
2022-10-28 346-602 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BAYTOWN TX
2022-10-28 350-202 0XXX1XXX2XXX8XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H THORNTON CA
2022-10-28 380-256 0XXX1XXX2XXX3XXX8XXX9XXX · 2 holders which blocks → NUSO, LLC 732J ALTON OH
2022-10-28 409-298 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H KOUNTZE TX
2022-10-28 448-953 0XXX3XXX7XXX · 2 holders which blocks → ONVOY, LLC - FL 937C CHERRYLAKE FL
2022-10-28 505-536 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 FARMINGTON NM
2022-10-28 505-538 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 6573 WHITE ROCK NM
2022-10-28 507-970 0XXX9XXX · 2 holders which blocks → COMMIO, LLC 939H ROCHESTER MN
2022-10-28 562-586 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PICORIVERA CA
2022-10-28 606-646 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - KY 896E MEADS KY
2022-10-28 657-632 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FULLERTON CA
2022-10-28 731-208 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PARIS TN
2022-10-28 734-691 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIVONIA MI
2022-10-28 743-437 0XXX1XXX4XXX5XXX which blocks → ONVOY, LLC - NC 638E DOBSON NC
2022-10-28 831-285 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E WATSONVL CA
2022-10-28 858-341 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 CHULAVISTA CA
2022-10-28 864-265 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - SC 548E GREENWOOD SC
2022-10-28 920-962 0XXX2XXX3XXX9XXX which blocks → ONVOY, LLC - WI 225C MT CALVARY WI
2022-10-28 947-253 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2022-10-28 989-420 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MAPLE RPD MI
2022-10-27 332-287 0–9 XXXall 10 · 5 holders which blocks → TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2022-10-27 438-773 not yet reported which blocks → Fido Solutions Inc. 5643 Montreal —
2022-10-27 438-779 not yet reported which blocks → Fido Solutions Inc. 5643 Montreal —
2022-10-27 520-656 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 WILLCOX AZ
2022-10-27 539-812 0–9 XXXall 10 · 5 holders which blocks → PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C TULSA OK
2022-10-27 580-820 0XXX8XXX · 2 holders which blocks → PINE TELEPHONE COMPANY DBA PINE CELL PHONES, INC. 235C BROKEN BOW OK
2022-10-27 657-620 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CYPRESS CA
2022-10-27 657-624 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ANAHEIM CA
2022-10-27 657-629 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E WESTMINSTR CA
2022-10-27 657-630 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2022-10-27 657-635 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2022-10-27 667-418 4XXX7XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J GREENSBORO MD
2022-10-27 681-453 0XXX3XXX7XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - WV 080F BELINGTON WV
2022-10-27 727-615 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEARWATER FL
2022-10-27 754-294 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2022-10-27 782-446 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2022-10-27 782-503 not yet reported which blocks → Bell Mobility Aliant 329A Sydney —
2022-10-27 835-206 0XXX1XXX4XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 ATGLEN PA
2022-10-27 901-694 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H SOMERVILLE TN
2022-10-26 319-306 7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IA 9877 JESUP IA
2022-10-26 361-307 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CUERO TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.