NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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
2019-05-09 813-640 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E ZEPHYRHILS FL
2019-05-09 825-397 not yet reported which blocks → TELUS 8084 Drumheller —
2019-05-09 863-323 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BARTOW FL
2019-05-09 913-308 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - KS 986E BONNER SPG KS
2019-05-09 986-867 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H BOISE ID
2019-05-08 202-915 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DC 850D WSHNGTNZN1 DC
2019-05-08 220-900 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → FRACTEL, LLC 965H SUGARGROVE OH
2019-05-08 267-796 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
2019-05-08 272-230 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 WILLIAMSPT PA
2019-05-08 417-502 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MO 093F JOPLIN MO
2019-05-08 463-867 0–9 XXXall 10 · 2 holders which blocks → COMMIO, LLC 939H INDIANAPLS IN
2019-05-08 574-544 0–9 XXXall 10 · 7 holders which blocks → COMMIO, LLC 939H SOUTH BEND IN
2019-05-08 724-792 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J WALEXANDER PA
2019-05-08 725-219 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NV 075F LAS VEGAS NV
2019-05-08 757-904 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2019-05-08 785-888 8XXX which blocks → FRACTEL, LLC 965H SILVERLAKE KS
2019-05-08 786-687 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - FL 8664 MIAMI FL
2019-05-08 910-348 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NC 8389 PEMBROKE NC
2019-05-08 970-909 0–9 XXXall 10 · 7 holders which blocks → COMCAST IP PHONE, LLC 318J GREELEY CO
2019-05-07 318-833 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H SHREVEPORT LA
2019-05-07 319-302 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC - IA 423H CENTER PT IA
2019-05-07 320-418 0XXX which blocks → CHARTER IP ENABLED SERVICES, LLC 792K OSAKIS MN
2019-05-07 336-943 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 HIGH POINT NC
2019-05-07 404-301 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ATLANTA GA
2019-05-07 470-467 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E CONYERS GA
2019-05-07 540-584 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F GROTTOES VA
2019-05-07 605-315 0–9 XXXall 10 · 4 holders which blocks → AIRUS, INC. - SD 580H ARLINGTON SD
2019-05-07 605-815 0–9 XXXall 10 · 5 holders which blocks → AIRUS, INC. - SD 580H CHAMBERLAN SD
2019-05-07 816-652 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MO 993E KANSASCITY MO
2019-05-07 870-721 2XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - AR 5179 WASHINGTON AR
2019-05-07 902-666 not yet reported which blocks → IXICA Communications Inc. 812H Halifax —
2019-05-07 910-701 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CARTHAGE NC
2019-05-07 956-471 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAREDO TX
2019-05-06 213-462 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2019-05-06 249-489 not yet reported which blocks → Iristel Inc. 154E Barrie —
2019-05-06 385-304 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AMERCNFORK UT
2019-05-06 424-434 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K CULVERCITY CA
2019-05-06 470-501 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2019-05-06 506-496 not yet reported which blocks → Iristel Inc. 154E Bathurst —
2019-05-06 509-864 0XXX1XXX4XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TOPPENISH WA
2019-05-06 747-313 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 BRBN BRBN CA
2019-05-06 908-540 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F PLAINFIELD NJ
2019-05-03 365-809 not yet reported which blocks → Iristel Inc. 154E Aurora —
2019-05-03 407-813 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C ORLANDO FL
2019-05-03 407-946 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 ORLANDO FL
2019-05-03 423-590 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F SO PITTSBG TN
2019-05-03 469-627 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 DALLAS TX
2019-05-03 469-649 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F PLANO TX
2019-05-03 530-670 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C CORNING CA
2019-05-03 581-203 not yet reported which blocks → Iristel Inc. 154E Alma —

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.