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
2017-12-22 865-343 0–9 XXXall 10 · 6 holders which blocks → VONAGE AMERICA LLC 197D KNOXVILLE TN
2017-12-22 914-650 0–9 XXXwhole prefix which blocks → ONVOY, LLC- NY 384C MT VERNON NY
2017-12-22 929-463 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN08 NY
2017-12-22 941-300 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C NORTH PORT FL
2017-12-22 980-274 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 PINEVILLE NC
2017-12-22 989-270 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLCV - MI 543C SAGINAW MI
2017-12-21 219-533 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - IN 097D HIGHLAND IN
2017-12-21 236-757 not yet reported which blocks → TELUS 8086 Vancouver —
2017-12-21 343-622 not yet reported which blocks → ExaTEL Inc. 3147 Deep River —
2017-12-21 343-623 not yet reported which blocks → ExaTEL Inc. 3147 Chalk River —
2017-12-21 365-242 not yet reported which blocks → TELUS Integrated Communications 2782 Port Credit —
2017-12-21 385-300 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - UT 871E BOUNTIFUL UT
2017-12-21 431-489 not yet reported which blocks → TELUS Integrated Communications 2782 Winnipeg —
2017-12-21 442-363 0–9 XXXall 10 · 5 holders which blocks → FRONTIER CALIFORNIA INC. 4420 VTVL ADLN CA
2017-12-21 510-650 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C ELSBR-PINL CA
2017-12-21 531-216 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SCHUYLER NE
2017-12-21 548-227 not yet reported which blocks → TELUS Integrated Communications 2782 Elmira —
2017-12-21 548-228 not yet reported which blocks → TELUS Integrated Communications 2782 New Hamburg —
2017-12-21 647-561 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-12-21 647-562 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-12-21 647-563 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2017-12-21 669-293 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SNJS NORTH CA
2017-12-21 707-615 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SANTA ROSA CA
2017-12-21 720-601 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2017-12-21 825-207 not yet reported which blocks → TELUS 8084 Calgary —
2017-12-21 825-212 not yet reported which blocks → TELUS 8084 High River —
2017-12-21 825-213 not yet reported which blocks → TELUS 8084 Fort McMurray —
2017-12-21 907-417 7XXX which blocks → GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION 6872 NULATO AK
2017-12-21 907-709 7XXX which blocks → GCI COMMUNICATION CORP. DBA GENERAL COMMUNICATION 6872 HUSLIA AK
2017-12-21 939-200 0–9 XXXall 10 · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 AGUADILLA PR
2017-12-21 939-425 0–9 XXXwhole prefix which blocks → SUNCOM DBA T-MOBILE USA 8645 NARANJITO PR
2017-12-20 234-238 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D AKRON OH
2017-12-20 236-238 not yet reported which blocks → Fido Solutions Inc. 5643 Nanaimo —
2017-12-20 236-428 not yet reported which blocks → TELUS 8086 New Westminster —
2017-12-20 236-429 not yet reported which blocks → TELUS 8086 Vancouver —
2017-12-20 239-468 0–9 XXXwhole prefix which blocks → CENTURYLINK OF FLORIDA, INC. (UNITED) 0341 BONITA SPG FL
2017-12-20 240-576 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D HAGERSTOWN MD
2017-12-20 249-288 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Barrie —
2017-12-20 256-421 0XXX1XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GRANT AL
2017-12-20 336-206 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K BALDWIN NC
2017-12-20 337-450 0–9 XXXall 10 · 5 holders which blocks → LAFAYETTE CITY-PARISH CONSOLIDATED GOVERNMENT - LA 9002 YOUNGSVL LA
2017-12-20 346-290 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2017-12-20 346-322 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - TX 903C BARKER TX
2017-12-20 361-295 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 C CHRISTI TX
2017-12-20 365-688 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Oshawa —
2017-12-20 438-851 not yet reported which blocks → Bell Mobility 6574 Montreal —
2017-12-20 438-852 not yet reported which blocks → Bell Mobility 6574 Montreal —
2017-12-20 469-370 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 MCKINNEY TX
2017-12-20 470-489 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA NE GA
2017-12-20 520-771 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D TUCSON AZ

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.