NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2013-10-15 707-892 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WINDSOR CA
2013-10-15 778-405 not yet reported which blocks → Shaw Telecom Inc. 497E Victoria —
2013-10-15 778-856 not yet reported which blocks → TELUS 8086 Abbotsford —
2013-10-15 832-829 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2013-10-15 832-980 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HOUSTON TX
2013-10-15 951-380 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 HEMT HEMT CA
2013-10-15 951-435 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 PERRIS CA
2013-10-14 480-364 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-14 574-240 0–9 XXXall 10 · 7 holders which blocks → PULASKI-WHITE RURAL TELEPHONE COOPERATIVE, INC. 204H MONTICELLO IN
2013-10-14 716-292 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 BUFFALO NY
2013-10-11 226-210 not yet reported which blocks → Iristel Inc. 154E St. Thomas —
2013-10-11 226-774 not yet reported which blocks → Iristel Inc. 154E Windsor —
2013-10-11 226-910 not yet reported which blocks → Iristel Inc. 154E Owen Sound —
2013-10-11 343-300 not yet reported which blocks → Iristel Inc. 154E Brockville —
2013-10-11 343-800 not yet reported which blocks → Iristel Inc. 154E Smiths Falls —
2013-10-11 470-217 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2013-10-11 470-236 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E SOCIALCRCL GA
2013-10-11 478-253 0–9 XXXall 10 · 6 holders which blocks → AT&T ENTERPRISES, LLC 516C LOUISVILLE GA
2013-10-11 480-356 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2013-10-11 579-600 not yet reported which blocks → Iristel Inc. 154E Beloeil —
2013-10-11 579-977 not yet reported which blocks → Iristel Inc. 154E Chateauguay —
2013-10-11 705-315 not yet reported which blocks → Iristel Inc. 154E Barrie —
2013-10-11 705-410 not yet reported which blocks → Iristel Inc. 154E Borden-Angus —
2013-10-11 705-413 not yet reported which blocks → Iristel Inc. 154E Orillia —
2013-10-11 832-970 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2013-10-11 832-997 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 BAMMEL TX
2013-10-10 252-922 0XXX1XXX2XXX6XXX7XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SOUTHMILLS NC
2013-10-10 352-720 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J MOUNT DORA FL
2013-10-10 352-775 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LADY LAKE FL
2013-10-10 502-242 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF KENTUCKY, LLC - KY 035H LOUISVILLE KY
2013-10-10 669-221 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOS GATOS CA
2013-10-10 706-666 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E WATKINSVL GA
2013-10-10 706-940 0–9 XXXall 10 · 5 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J COLUMBUS GA
2013-10-10 810-369 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MI 6120 GOODRICH MI
2013-10-10 828-949 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CATAWBA NC
2013-10-10 917-201 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J NWYRCYZN11 NY
2013-10-08 262-505 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN2 WI
2013-10-08 314-858 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K KIRKWOOD MO
2013-10-08 414-797 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 MILWAUKZN4 WI
2013-10-08 424-320 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2013-10-08 480-386 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J PHOENIX AZ
2013-10-08 581-300 not yet reported which blocks → Videotron Ltd. 8306 Quebec —
2013-10-08 581-450 not yet reported which blocks → Videotron Ltd. 8306 Loretteville —
2013-10-08 631-437 0–9 XXXall 10 · 6 holders which blocks → TC SYSTEMS, INC. - NY 7140 FIREISLAND NY
2013-10-08 646-694 0–9 XXXall 10 · 2 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN01 NY
2013-10-08 646-782 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NWYRCYZN01 NY
2013-10-08 727-303 0–9 XXXall 10 · 4 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J CLEARWATER FL
2013-10-08 774-702 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TC SYSTEMS, INC. 7135 VINEYRDHVN MA
2013-10-08 778-770 not yet reported which blocks → Iristel Inc. 154E Whistler —
2013-10-08 808-202 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - HI 210H HONOLULU HI

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.