NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
2012-11-09 204-409 not yet reported which blocks → Provincial Tel Inc. 498E Winnipeg Beach —
2012-11-09 204-544 not yet reported which blocks → Provincial Tel Inc. 498E Niverville —
2012-11-09 204-640 not yet reported which blocks → Provincial Tel Inc. 498E St. Laurent —
2012-11-09 204-719 not yet reported which blocks → Provincial Tel Inc. 498E Eriksdale —
2012-11-09 204-860 not yet reported which blocks → Provincial Tel Inc. 498E Dugald —
2012-11-09 204-917 not yet reported which blocks → Provincial Tel Inc. 498E Roblin —
2012-11-09 251-301 0–9 XXXall 10 · 4 holders which blocks → TELEPAK NETWORKS, INC. - AL 947G MOBILE AL
2012-11-09 303-505 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 DENVER CO
2012-11-09 321-210 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 COCOA FL
2012-11-09 434-602 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA 7238 JARRATT VA
2012-11-09 561-402 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 WPALMBEACH FL
2012-11-09 587-712 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Edmonton —
2012-11-09 612-402 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2012-11-09 651-404 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK OF MINNESOTA, INC. 1456 HASTINGS MN
2012-11-09 757-785 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA 7238 NRFOLKZON2 VA
2012-11-09 803-620 0–9 XXXall 10 · 7 holders which blocks → PBT COMMUNICATIONS, INC. - SC 3453 YORK SC
2012-11-09 901-505 0–9 XXXall 10 · 5 holders which blocks → TELEPAK NETWORKS, INC. - TN 948G MEMPHIS TN
2012-11-08 480-300 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - AZ 630E PHOENIX AZ
2012-11-08 574-401 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G SOUTH BEND IN
2012-11-08 603-213 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J MILFORD NH
2012-11-08 719-999 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CO 026D COLORDOSPG CO
2012-11-08 720-800 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2012-11-08 774-361 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 OSTERVILLE MA
2012-11-08 774-404 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 PLYMOUTH MA
2012-11-08 857-303 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BOSTON MA
2012-11-08 970-601 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D MEAD CO
2012-11-08 970-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D LOVELAND CO
2012-11-08 970-888 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D GREELEY CO
2012-11-08 970-999 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CO 026D FT COLLINS CO
2012-11-07 207-606 0–9 XXXall 10 · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - ME 882G YORK ME
2012-11-07 323-487 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-07 438-763 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2012-11-07 484-280 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ALLENTOWN PA
2012-11-07 614-907 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 COLUMBUS OH
2012-11-07 626-460 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PSDN PSDN CA
2012-11-07 705-508 not yet reported which blocks → Bragg Communications Inc. 4878 Thessalon —
2012-11-07 705-509 not yet reported which blocks → Bragg Communications Inc. 4878 Iron Bridge —
2012-11-07 719-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CO 026D CALHAN CO
2012-11-07 760-867 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E VTVL ADLN CA
2012-11-07 802-638 0XXX1XXX3XXX6XXX8XXX9XXX · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - VT 881G MILTON VT
2012-11-07 814-722 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 ERIE PA
2012-11-07 858-766 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C LA JOLLA CA
2012-11-07 902-391 not yet reported which blocks → Bell Mobility Aliant 329A Sheet Harbour —
2012-11-07 937-712 0–9 XXXall 10 · 7 holders which blocks → HORIZON SERVICES, INC. - OH 601G MOUNT ORAB OH
2012-11-06 402-513 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J OMAHA NE
2012-11-06 415-757 0–9 XXXall 10 · 7 holders which blocks → NUSO, LLC 551G SNFC CNTRL CA
2012-11-06 661-448 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G BKFD MAIN CA
2012-11-06 681-255 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BLUEFIELD WV
2012-11-06 716-710 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 551G BUFFALO NY
2012-11-06 805-634 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → NUSO, LLC 551G SNLUSOBSPO CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.