NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2001-10-29 204-392 not yet reported which blocks → MTS Inc. 991B Steinbach —
2001-10-29 267-286 9XXX which blocks → PAETEC ITEL, LLC 829J PHLDLPHZN3 PA
2001-10-29 309-720 0XXX3XXX · 2 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F SHERRARD IL
2001-10-29 309-814 9XXX which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F GLASFORD IL
2001-10-29 318-805 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → PAETEC ITEL, LLC 829J MONROE LA
2001-10-29 321-421 0XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J EAU GALLIE FL
2001-10-29 409-828 3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAUMONT TX
2001-10-29 418-574 not yet reported which blocks → Videotron Ltd. 8306 Loretteville —
2001-10-29 479-886 8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 6805 RUSSELLVL AR
2001-10-29 484-794 2XXX3XXX4XXX which blocks → D&E/OMNIPOINT WIREL JOINT VENT LP DBA PCS ONE 6846 READING PA
2001-10-29 509-390 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → ELTOPIA COMMUNICATIONS, LLC - WA 663D SOAP LAKE WA
2001-10-29 509-620 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - WA 483E COULEE DAM WA
2001-10-29 573-746 2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 LKOZKOSBCH MO
2001-10-29 780-995 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2001-10-29 832-578 none assigned yet which blocks → AERIAL COMMUNICATIONS, INC. 6701 HOUSTON TX
2001-10-29 908-469 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX which blocks → CABLEVISION LIGHTPATH, INC. - NJ 4948 ELIZABETH NJ
2001-10-29 913-961 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 6532 KANSASCITY KS
2001-10-29 941-406 7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J ENGLEWOOD FL
2001-10-26 252-543 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J SNOW HILL NC
2001-10-26 252-547 8XXX which blocks → PAETEC ITEL, LLC 829J ENGELHARD NC
2001-10-26 267-303 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN1 PA
2001-10-26 309-771 1XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F HILLSDALE IL
2001-10-26 309-843 1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F ALEXIS IL
2001-10-26 309-845 1XXX which blocks → MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 846F OSCO IL
2001-10-26 337-315 2XXX3XXX4XXX5XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LAFAYETTE LA
2001-10-26 337-780 0XXX4XXX5XXX6XXX7XXX8XXX which blocks → VOICESTREAM GSM I, LLC 150C LAFAYETTE LA
2001-10-26 347-256 none assigned yet which blocks → METROPCS, INC. 5562 NWYRCYZN09 NY
2001-10-26 347-495 not yet reported which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2001-10-26 504-982 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
2001-10-26 518-335 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → METROPCS, INC. 5562 PLATTSBG NY
2001-10-26 712-209 5XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 6570 ESTHERVL IA
2001-10-26 717-368 2XXX3XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 LANCASTER PA
2001-10-26 717-817 5XXX6XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2001-10-26 785-460 not yet reported which blocks → S & T COMMUNICATIONS, LLC - KS 5910 COLBY KS
2001-10-26 785-890 not yet reported which blocks → S & T COMMUNICATIONS, LLC - KS 5910 GOODLAND KS
2001-10-26 828-354 1XXX3XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 SYLVA NC
2001-10-26 845-641 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
2001-10-26 845-642 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NEW CITY NY
2001-10-26 908-349 0XXX1XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J UNIONVILLE NJ
2001-10-26 908-645 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 HACKETTSTN NJ
2001-10-26 910-338 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 WILMINGTON NC
2001-10-26 910-339 none assigned yet which blocks → TWC IP ENABLED SERVICES, LLC 793K FAYETTEVL NC
2001-10-26 910-461 0XXX2XXX3XXX4XXX5XXX · 3 holders which blocks → METROPCS, INC. 5562 ROCKINGHAM NC
2001-10-26 910-881 not yet reported which blocks → PAETEC ITEL, LLC 829J ROSE HILL NC
2001-10-26 910-923 not yet reported which blocks → PAETEC ITEL, LLC 829J CLINTON NC
2001-10-26 910-953 not yet reported which blocks → PAETEC ITEL, LLC 829J PARKTON NC
2001-10-26 970-631 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 FT COLLINS CO
2001-10-26 978-890 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 ESSEX MA
2001-10-26 978-951 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 LITTLETON MA
2001-10-26 978-956 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MA 4018 FITCHBURG MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.