NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2012-09-26 434-328 0–9 XXXall 10 · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J CHARLOTSVL VA
2012-09-26 540-596 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CASTLE TEL. CO. 3029 NEW CASTLE VA
2012-09-26 682-205 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K GRANBURY TX
2012-09-26 713-815 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 HOUSTON TX
2012-09-26 717-947 0–9 XXXall 10 · 7 holders which blocks → CTSI, INC. - PA 7513 LANCASTER PA
2012-09-26 765-300 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF INDIANA, LLC - IN 279F BUCK CREEK IN
2012-09-26 770-462 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E VILLA RICA GA
2012-09-26 906-240 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K KINROSS MI
2012-09-26 906-442 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K RUDYARD MI
2012-09-26 956-252 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURG TX
2012-09-25 202-317 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC 6402 WSHNGTNZN1 DC
2012-09-25 267-538 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J PHLDLPHZN4 PA
2012-09-25 317-646 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2012-09-25 319-505 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 WATERLOO IA
2012-09-25 412-525 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-09-25 431-226 not yet reported which blocks → MTS Inc. 991B Bissett —
2012-09-25 431-227 not yet reported which blocks → MTS Inc. 991B Easterville —
2012-09-25 431-228 not yet reported which blocks → MTS Inc. 991B Grand Beach —
2012-09-25 604-394 not yet reported which blocks → Distributel 081E Richmond —
2012-09-25 724-900 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 CRIDERSCOR PA
2012-09-25 732-569 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 TOMS RIVER NJ
2012-09-25 778-585 not yet reported which blocks → TELUS Mobility 8301 Courtenay —
2012-09-25 862-225 0–9 XXXall 10 · 6 holders which blocks → PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 264F PASSAIC NJ
2012-09-25 909-347 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E FONTANA CA
2012-09-24 201-846 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 RAMSEY NJ
2012-09-24 239-529 0–9 XXXall 10 · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J NAPLES FL
2012-09-24 239-888 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM, INC. - FL 382G FORT MYERS FL
2012-09-24 415-741 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNFC MT-EV CA
2012-09-24 520-442 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - AZ 587F BENSON AZ
2012-09-24 605-936 0XXX1XXX2XXX3XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 6569 HURON SD
2012-09-24 646-629 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-09-24 646-771 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-09-24 661-429 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LANCASTER CA
2012-09-24 720-538 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 FORTLUPTON CO
2012-09-24 763-301 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 CAMBRIDGE MN
2012-09-24 818-856 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E NO HOLLYWD CA
2012-09-24 917-246 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN06 NY
2012-09-24 917-789 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN07 NY
2012-09-21 219-302 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 GARY IN
2012-09-21 267-469 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN4 PA
2012-09-21 872-207 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E CHICGOZN08 IL
2012-09-21 917-530 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2012-09-21 917-724 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN15 NY
2012-09-21 984-232 0–9 XXXall 10 · 7 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 RALEIGH NC
2012-09-20 443-906 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G SEVERNA PK MD
2012-09-20 541-802 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K OAKLAND OR
2012-09-19 210-608 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 SANANTONIO TX
2012-09-19 443-713 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF MARYLAND, LLC 568G GLENBURNIE MD
2012-09-19 786-504 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E HOMESTEAD FL
2012-09-19 832-624 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 HOUSTON TX

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.