NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 21
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
2013-06-11 226-852 not yet reported which blocks → TELUS Integrated Communications 2782 Stratford —
2013-06-11 253-244 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2013-06-11 289-538 not yet reported which blocks → TELUS Integrated Communications 2782 Richmond Hill —
2013-06-11 343-355 not yet reported which blocks → TELUS Integrated Communications 2782 Belleville —
2013-06-11 343-356 not yet reported which blocks → TELUS Integrated Communications 2782 Cornwall —
2013-06-11 431-483 not yet reported which blocks → TELUS Integrated Communications 2782 Brandon —
2013-06-11 431-484 not yet reported which blocks → TELUS Integrated Communications 2782 Selkirk —
2013-06-11 431-485 not yet reported which blocks → TELUS Integrated Communications 2782 Winnipeg —
2013-06-11 506-980 not yet reported which blocks → TELUS Integrated Communications 2782 Moncton —
2013-06-11 506-981 not yet reported which blocks → TELUS Integrated Communications 2782 Fredericton —
2013-06-11 506-982 not yet reported which blocks → TELUS Integrated Communications 2782 Saint John —
2013-06-11 612-255 0–9 XXXall 10 · 3 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 4139 TWINCITIES MN
2013-06-11 802-336 2XXX6XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J RICHMOND VT
2013-06-11 802-539 2XXX which blocks → COMCAST IP PHONE, LLC 318J CHARLOTTE VT
2013-06-11 802-643 2XXX which blocks → COMCAST IP PHONE, LLC 318J BRISTOL VT
2013-06-11 802-799 2XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J HINESBURG VT
2013-06-11 802-926 2XXX which blocks → COMCAST IP PHONE, LLC 318J WEYBRIDGE VT
2013-06-11 816-800 0–9 XXXall 10 · 6 holders which blocks → AVID COMMUNICATIONS, LLC - MO 718D KANSASCITY MO
2013-06-11 862-801 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NJ 118F BUTLER NJ
2013-06-10 415-802 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNFC CNTRL CA
2013-06-10 619-452 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SNDG SNDG CA
2013-06-10 754-210 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 HOLLYWOOD FL
2013-06-10 765-229 0XXX1XXX2XXX4XXX8XXX9XXX · 3 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K UNION CITY IN
2013-06-10 848-575 0–9 XXXwhole prefix which blocks → VERIZON NEW JERSEY, INC. 9206 DUNELLEN NJ
2013-06-10 858-223 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SNDG LVTA CA
2013-06-07 204-581 not yet reported which blocks → LES.NET (1996) Inc. 141F Brandon —
2013-06-07 208-502 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - ID 192F COTTONWOOD ID
2013-06-07 224-801 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J PALATINE IL
2013-06-07 224-802 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J DUNDEE IL
2013-06-07 236-430 not yet reported which blocks → TELUS 8086 Nelson —
2013-06-07 236-431 not yet reported which blocks → TELUS 8086 Salmon Arm —
2013-06-07 236-432 not yet reported which blocks → TELUS 8086 Terrace —
2013-06-07 236-433 not yet reported which blocks → TELUS 8086 Williams Lake —
2013-06-07 321-802 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MELBOURNE FL
2013-06-07 352-877 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J OCALA FL
2013-06-07 402-409 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NE 995E SYRACUSE NE
2013-06-07 404-640 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2013-06-07 469-801 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J DALLAS TX
2013-06-07 480-725 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2013-06-07 518-667 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 HARTFORD NY
2013-06-07 581-927 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Quebec —
2013-06-07 581-928 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Quebec —
2013-06-07 646-762 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NY 4006 NWYRCYZN01 NY
2013-06-07 708-627 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MONEE IL
2013-06-07 720-965 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2013-06-07 813-804 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TAMPACEN FL
2013-06-07 902-339 not yet reported which blocks → Bragg Communications Inc. 4878 Covehead —
2013-06-07 971-802 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SHERIDAN OR
2013-06-06 440-805 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM WESTERN RESERVE, INC. 0666 ROCK CREEK OH
2013-06-06 469-802 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J DALLAS TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.