NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 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
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
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
— 725-702 not yet reported which blocks → NV
— 725-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NV
— 725-799 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J LAS VEGAS NV
— 725-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NV
— 725-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NV
— 725-950 not yet reported which blocks → NV
— 725-958 not yet reported which blocks → NV
— 725-959 not yet reported which blocks → NV
— 725-976 not yet reported which blocks → NV
— 726-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-252 not yet reported which blocks → TX
— 726-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST TX
— 726-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-700 not yet reported which blocks → TX
— 726-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX TX
— 726-950 not yet reported which blocks → TX
— 726-958 not yet reported which blocks → TX
— 726-959 not yet reported which blocks → TX
— 726-976 not yet reported which blocks → TX
— 727-204 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CLEARWATER FL
— 727-206 not yet reported which blocks → ABC PAGING CITY BEEPERS, INC. 6548 CLEARWATER FL
— 727-209 7XXX which blocks → PAETEC ITEL, LLC 829J STPETERSBG FL
— 727-210 3XXX5XXX7XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CLEARWATER FL
— 727-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 727-213 4XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 CLEARWATER FL
— 727-214 4XXX7XXX8XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 STPETERSBG FL
— 727-215 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
— 727-216 3XXX5XXX6XXX · 3 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 CLEARWATER FL
— 727-217 5XXX6XXX which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-218 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - FL 937C CLEARWATER FL
— 727-219 1XXX2XXX4XXX6XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
— 727-222 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E CLEARWATER FL
— 727-224 none assigned yet which blocks → METROPCS, INC. 5562 CLEARWATER FL
— 727-226 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 HUDSON FL
— 727-227 not yet reported which blocks → FRONTIER FLORIDA LLC DBA FRONTIER COMM OF FLORIDA 0328 STPETERSBG FL
— 727-230 not yet reported which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 CLEARWATER FL
— 727-231 1XXX4XXX5XXX6XXX · 2 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 STPETERSBG FL
— 727-232 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 NWPTRICHEY FL
— 727-233 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 HUDSON FL
— 727-234 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → MCI WORLDCOM COMMUNICATIONS, INC. - FL 7448 TARPON SPG FL
— 727-235 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 STPETERSBG FL
— 727-239 0–9 XXXall 10 · 3 holders which blocks → WOW! INTERNET, CABLE AND PHONE 961J CLEARWATER FL
— 727-243 none assigned yet which blocks → METROPCS, INC. 5562 NWPTRICHEY FL
— 727-244 none assigned yet which blocks → METROPCS, INC. 5562 CLEARWATER FL
— 727-245 0XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HUDSON FL

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.