NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
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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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 443-997 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 443-999 not yet reported which blocks → VERIZON MARYLAND, INC. 9212 BALTIMORE MD
— 445-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-273 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E NEWTOWN PA
— 445-275 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHLDLPHZN2 PA
— 445-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-400 0–9 XXXall 10 · 4 holders which blocks → VOIP INNOVATIONS, LLC 597F PHLDLPHZN2 PA
— 445-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST PA
— 445-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-700 not yet reported which blocks → PA
— 445-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 445-950 not yet reported which blocks → PA
— 445-958 not yet reported which blocks → PA
— 445-959 not yet reported which blocks → PA
— 445-976 not yet reported which blocks → PA
— 447-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-238 0XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 AUGUSTA IL
— 447-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-442 0XXX1XXX3XXX5XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - IL 984E WEST DANA IL
— 447-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST IL
— 447-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-700 not yet reported which blocks → IL
— 447-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX IL
— 447-950 not yet reported which blocks → IL
— 447-958 not yet reported which blocks → IL
— 447-959 not yet reported which blocks → IL
— 447-976 not yet reported which blocks → IL
— 448-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-231 0–9 XXXwhole prefix which blocks → ONVOY, LLC - FL 937C TALLAHASSE FL
— 448-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST FL
— 448-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-700 not yet reported which blocks → FL
— 448-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 448-950 not yet reported which blocks → FL
— 448-958 not yet reported which blocks → FL
— 448-959 not yet reported which blocks → FL
— 448-976 not yet reported which blocks → FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.