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
2019-05-01 929-620 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2019-05-01 929-801 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN10 NY
2019-04-30 281-729 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J DICKINSON TX
2019-04-30 386-268 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PALATKA FL
2019-04-30 515-489 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - IA 985E JEWELL IA
2019-04-30 647-370 not yet reported which blocks → Iristel Inc. 154E Toronto —
2019-04-30 647-371 not yet reported which blocks → Iristel Inc. 154E Toronto —
2019-04-30 647-372 not yet reported which blocks → Iristel Inc. 154E Toronto —
2019-04-30 712-517 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC - IA 423H RED OAK IA
2019-04-30 712-772 0XXX1XXX7XXX · 3 holders which blocks → AIRUS, INC - IA 423H MINEOLA IA
2019-04-30 712-787 0XXX1XXX2XXX5XXX8XXX9XXX · 5 holders which blocks → AIRUS, INC - IA 423H NEOLA IA
2019-04-30 754-243 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FTLAUDERDL FL
2019-04-30 786-679 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MIAMI FL
2019-04-30 804-902 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F LIVELY VA
2019-04-30 843-738 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F CLIO SC
2019-04-30 910-851 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 HAMLET NC
2019-04-30 915-233 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CLINT TX
2019-04-30 956-527 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F EDCOUCH TX
2019-04-29 314-634 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KIRKWOOD MO
2019-04-29 562-512 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LONG BEACH CA
2019-04-29 639-872 not yet reported which blocks → TELUS Integrated Communications 2782 Lloydminster —
2019-04-29 639-873 not yet reported which blocks → TELUS Integrated Communications 2782 Paradise Hill —
2019-04-29 639-874 not yet reported which blocks → TELUS Integrated Communications 2782 Unity —
2019-04-29 639-876 not yet reported which blocks → TELUS Integrated Communications 2782 Kindersley —
2019-04-29 720-738 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2019-04-29 804-535 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F KINGWILLIM VA
2019-04-29 816-634 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 KANSASCITY MO
2019-04-26 205-736 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AL 8271 YORK AL
2019-04-26 210-890 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 SANANTONIO TX
2019-04-26 302-490 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
2019-04-26 618-577 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E BREESE IL
2019-04-26 639-879 not yet reported which blocks → TELUS Integrated Communications 2782 Marshall —
2019-04-26 639-880 not yet reported which blocks → TELUS Integrated Communications 2782 Turtleford —
2019-04-26 754-241 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E CORAL SPG FL
2019-04-26 904-496 0–9 XXXall 10 · 2 holders which blocks → VONAGE AMERICA LLC 197D JACKSONVL FL
2019-04-25 206-385 0–9 XXXwhole prefix which blocks → ONVOY, LLC - WA 483E SEATTLE WA
2019-04-25 223-217 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 LEOLA PA
2019-04-25 252-666 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J KNOTTS IS NC
2019-04-25 425-436 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2019-04-25 434-217 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F CHASE CITY VA
2019-04-25 435-500 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - UT 871E DELTA UT
2019-04-25 605-307 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - SD 580H HILL CITY SD
2019-04-25 657-381 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2019-04-25 720-671 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 DENVER CO
2019-04-24 336-780 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NC 638E LEXINGTON NC
2019-04-24 631-939 0–9 XXXall 10 · 7 holders which blocks → METROPCS, INC. 5562 RIVERHEAD NY
2019-04-24 786-676 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 MIAMI FL
2019-04-24 930-210 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F LEXINGTON IN
2019-04-23 236-444 not yet reported which blocks → IXICA Communications Inc. 812H Vancouver —
2019-04-23 438-444 not yet reported which blocks → IXICA Communications Inc. 812H Montreal —

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.