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
2019-06-26 873-742 not yet reported which blocks → Iristel Inc. 154E Buckingham —
2019-06-26 902-944 not yet reported which blocks → Iristel Inc. 154E Charlottetown —
2019-06-25 250-986 not yet reported which blocks → Videotron Ltd. 383F Victoria —
2019-06-25 302-867 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H WILMINGTON DE
2019-06-25 380-206 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 DUBLIN OH
2019-06-25 385-326 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 OGDEN UT
2019-06-25 480-572 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PHOENIX AZ
2019-06-25 531-625 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SOSIOUX CY NE
2019-06-25 712-638 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 STORM LAKE IA
2019-06-25 720-691 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2019-06-25 757-979 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 CRITTENDEN VA
2019-06-25 762-249 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E HEPHZIBAH GA
2019-06-25 825-502 not yet reported which blocks → Iristel Inc. 154E Brooks —
2019-06-25 825-561 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2019-06-25 857-328 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F BOSTON MA
2019-06-24 226-764 not yet reported which blocks → TELUS Integrated Communications 2782 Linwood —
2019-06-24 236-512 not yet reported which blocks → Videotron Ltd. 787G Vancouver —
2019-06-24 319-867 0–9 XXXall 10 · 7 holders which blocks → COMMIO, LLC 939H IOWA CITY IA
2019-06-24 365-259 not yet reported which blocks → TELUS Integrated Communications 2782 Palgrave —
2019-06-24 416-474 not yet reported which blocks → Videotron Ltd. 787G Toronto —
2019-06-24 423-632 1XXX2XXX7XXX · 3 holders which blocks → TWIN LAKES COMMUNICATIONS, INC. - TN 204G WARTBURG TN
2019-06-24 559-379 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LINDSAY CA
2019-06-24 612-433 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2019-06-24 612-438 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2019-06-24 619-603 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 NATIONALCY CA
2019-06-24 689-209 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D WINTERPARK FL
2019-06-24 689-210 0–9 XXXall 10 · 5 holders which blocks → METROPCS NETWORKS, LLC 899D ST CLOUD FL
2019-06-24 705-905 not yet reported which blocks → Videotron Ltd. 383F Barrie —
2019-06-24 743-239 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 ASHEBORO NC
2019-06-24 762-242 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E HARLEM GA
2019-06-24 803-879 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C CLOVER SC
2019-06-24 825-461 not yet reported which blocks → Videotron Ltd. 787G Edmonton —
2019-06-24 828-579 0–9 XXXall 10 · 2 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ASHEVILLE NC
2019-06-24 843-984 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF SOUTH CAROLINA, LLC - SC 098H MTPLEASANT SC
2019-06-24 862-343 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F NEWARK NJ
2019-06-24 925-488 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WALNUT CRK CA
2019-06-24 986-793 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - ID 7558 BOISE ID
2019-06-21 202-918 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F WSHNGTNZN1 DC
2019-06-21 236-653 not yet reported which blocks → TELUS 8086 Saanich —
2019-06-21 336-974 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E RUFFIN NC
2019-06-21 405-768 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F OKLA CITY OK
2019-06-21 405-866 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 PAULS VLY OK
2019-06-21 913-358 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E ATCHISON KS
2019-06-21 913-361 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 OLATHE KS
2019-06-20 248-870 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 NORTHVILLE MI
2019-06-20 267-857 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN1 PA
2019-06-20 331-261 0XXX1XXX3XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 LEMONT IL
2019-06-20 480-564 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2019-06-20 480-578 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2019-06-20 505-443 0–9 XXXwhole prefix which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J ALBUQURQUE NM

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.