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
2016-06-24 619-601 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CHULAVISTA CA
2016-06-24 626-210 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K AZUSA CA
2016-06-24 669-205 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C GILROY CA
2016-06-24 707-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SANTA ROSA CA
2016-06-24 737-757 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F LEANDER TX
2016-06-24 812-901 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J EVANSVILLE IN
2016-06-24 843-954 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J FLORENCE SC
2016-06-24 909-414 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C ARROWHEAD CA
2016-06-23 202-816 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2016-06-23 205-651 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F CALERA AL
2016-06-23 213-212 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LSAN DA 07 CA
2016-06-23 240-904 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 6395 LAUREL238 MD
2016-06-23 256-802 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F ROGERSVL AL
2016-06-23 256-803 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - AL 072F BOAZ AL
2016-06-23 267-576 0–9 XXXall 10 · 6 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOYLESTOWN PA
2016-06-23 267-665 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN2 PA
2016-06-23 315-901 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 SYRACUSE NY
2016-06-23 323-607 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2016-06-23 323-689 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 08 CA
2016-06-23 337-703 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C LAFAYETTE LA
2016-06-23 405-451 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OK 409F WELLSTON OK
2016-06-23 480-486 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2016-06-23 540-390 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - VA 079F HARTWOOD VA
2016-06-23 606-552 0–9 XXXall 10 · 3 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C PIKEVILLE KY
2016-06-23 606-745 5XXX9XXX · 2 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 ALBANY KY
2016-06-23 612-772 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-06-23 651-802 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-06-23 712-430 0XXX1XXX2XXX3XXX4XXX7XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MALVERN IA
2016-06-23 719-394 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D COLORDOSPG CO
2016-06-23 763-760 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 TWINCITIES MN
2016-06-23 803-904 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 COLUMBIA SC
2016-06-23 808-765 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HILO HI
2016-06-23 862-904 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F LITTLE FLS NJ
2016-06-23 864-913 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SPARTANBG SC
2016-06-23 909-870 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C UPLAND CA
2016-06-23 970-546 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F DELTA CO
2016-06-23 970-832 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CO 078F CARBONDALE CO
2016-06-23 971-757 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ST HELENS OR
2016-06-23 980-495 0–9 XXXall 10 · 7 holders which blocks → COMPORIUM, INC.- NC 749H CHARLOTTE NC
2016-06-23 980-595 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E CHERRYVL NC
2016-06-22 234-757 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F ALLIANCE OH
2016-06-22 236-777 not yet reported which blocks → Fido Solutions Inc. 5643 Vancouver —
2016-06-22 405-925 0XXX1XXX2XXX3XXX4XXX9XXX · 2 holders which blocks → ONVOY, LLC - OK 409F SPENCER OK
2016-06-22 407-604 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E OVIEDO FL
2016-06-22 417-709 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 5814 SPRINGFLD MO
2016-06-22 431-801 not yet reported which blocks → Iristel Inc. 154E Winnipeg —
2016-06-22 470-332 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2016-06-22 470-488 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ATLANTA SO GA
2016-06-22 502-735 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GEORGETOWN KY
2016-06-22 531-220 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E LINCOLN NE

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.