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
2018-01-26 941-245 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 BRADENTON FL
2018-01-26 954-412 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 FTLAUDERDL FL
2018-01-25 213-476 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2018-01-25 249-688 not yet reported which blocks → Fido Solutions Inc. 5643 Peterborough —
2018-01-25 260-257 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 FORT WAYNE IN
2018-01-25 352-492 0–9 XXXall 10 · 7 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L WILDWOOD FL
2018-01-25 438-308 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2018-01-25 438-368 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2018-01-25 438-483 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2018-01-25 438-835 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2018-01-25 438-836 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Montreal —
2018-01-25 480-676 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2018-01-25 515-410 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DES MOINES IA
2018-01-25 727-273 0–9 XXXall 10 · 4 holders which blocks → BHN IP ENABLED SERVICES, LLC 045L STPETERSBG FL
2018-01-25 782-882 not yet reported which blocks → Fido Solutions Inc. 8820 Halifax —
2018-01-25 825-288 not yet reported which blocks → Fido Solutions Inc. 5643 Calgary —
2018-01-25 857-338 0–9 XXXall 10 · 4 holders which blocks → TC SYSTEMS, INC. 7135 BOSTON MA
2018-01-25 912-937 0–9 XXXall 10 · 7 holders which blocks → SOUTH CAROLINA NET, INC. DBA SPIRIT TELECOM - GA 898E BAXLEY GA
2018-01-25 920-442 0–9 XXXall 10 · 8 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 APPLETON WI
2018-01-25 984-368 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 SANFORD NC
2018-01-24 365-883 not yet reported which blocks → Fido Solutions Inc. 5643 Hamilton —
2018-01-24 548-333 not yet reported which blocks → Fido Solutions Inc. 5643 Kitchener-Waterloo —
2018-01-24 581-992 not yet reported which blocks → TELUS Mobility 8303 Quebec —
2018-01-24 825-888 not yet reported which blocks → Fido Solutions Inc. 5643 Edmonton —
2018-01-24 825-889 not yet reported which blocks → Fido Solutions Inc. 5643 Edmonton —
2018-01-24 951-512 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 RIVERSIDE CA
2018-01-23 213-340 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 10 CA
2018-01-23 236-597 not yet reported which blocks → TELUS Mobility 8301 South Kamloops —
2018-01-23 239-255 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 IMMOKALEE FL
2018-01-23 279-444 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SCRM MAIN CA
2018-01-23 279-777 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C SCRM NORTH CA
2018-01-23 279-888 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LINCOLN CA
2018-01-23 279-999 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SO PLACER CA
2018-01-23 581-688 not yet reported which blocks → Fido Solutions Inc. 5643 Quebec —
2018-01-23 587-568 not yet reported which blocks → Videotron Ltd. 787G Edmonton —
2018-01-23 587-643 not yet reported which blocks → TELUS Mobility 8301 Edmonton —
2018-01-23 587-664 not yet reported which blocks → Videotron Ltd. 787G Calgary —
2018-01-23 778-444 not yet reported which blocks → TELUS Mobility 8301 100 Mile House —
2018-01-22 236-336 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Victoria —
2018-01-22 236-338 not yet reported which blocks → Fido Solutions Inc. 5643 Kelowna —
2018-01-22 236-638 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Victoria —
2018-01-22 712-765 0XXX2XXX4XXX6XXX8XXX · 5 holders which blocks → NORTHERN IOWA COMMUNICATIONS PARTNERS, LLC - IA 705H ESTHERVL IA
2018-01-19 254-328 0XXX1XXX2XXX4XXX8XXX9XXX · 4 holders which blocks → VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 1181 RISINGSTAR TX
2018-01-19 312-312 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC 224C CHICGOZN01 IL
2018-01-19 325-237 0–9 XXXall 10 · 2 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 BLACKWELL TX
2018-01-19 432-233 0XXX1XXX3XXX8XXX9XXX · 3 holders which blocks → VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 1163 FORSAN TX
2018-01-19 516-460 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NASSAUZN02 NY
2018-01-19 551-300 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NJ 637C UNION CITY NJ
2018-01-19 615-359 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 LAFAYETTE TN
2018-01-19 646-906 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY

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.