NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2012-01-30 270-870 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 3 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 HODGENVL KY
2012-01-30 270-891 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 CLARKSON KY
2012-01-30 270-937 0–9 XXXall 10 · 8 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 CAMPBELSVL KY
2012-01-30 317-601 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2012-01-30 317-617 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 INDIANAPLS IN
2012-01-30 360-949 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VANCOUVER WA
2012-01-30 404-692 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA GA
2012-01-30 415-528 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFC JUNPR CA
2012-01-30 575-264 not yet reported which blocks → PVT NETWORKS, INC. - NM 438D HOBBS NM
2012-01-30 585-369 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ROCHESTER NY
2012-01-30 606-254 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 MEADS KY
2012-01-30 606-292 0XXX1XXX2XXX4XXX5XXX · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 FLEMINGSBG KY
2012-01-30 606-373 0XXX1XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 HAZARD KY
2012-01-30 606-401 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 LONDON KY
2012-01-30 606-440 0XXX1XXX2XXX4XXX6XXX8XXX · 6 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 VANCEBURG KY
2012-01-30 606-448 0–9 XXXall 10 · 8 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 LIBERTY KY
2012-01-30 606-532 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 GARRISON KY
2012-01-30 606-543 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 EVARTS KY
2012-01-30 606-559 0XXX1XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 BURNSIDE KY
2012-01-30 606-715 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 TOLLESBORO KY
2012-01-30 606-721 0XXX1XXX2XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 WASHINGTON KY
2012-01-30 606-737 0XXX4XXX · 2 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 ASHLAND KY
2012-01-30 606-750 1XXX2XXX3XXX4XXX6XXX · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 GREENUP KY
2012-01-30 606-819 0XXX1XXX4XXX6XXX8XXX · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 OWINGSVL KY
2012-01-30 606-895 4XXX which blocks → WINDSTREAM KENTUCKY EAST, INC. - LONDON 9691 IRVINE KY
2012-01-30 623-419 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PHOENIX AZ
2012-01-30 716-356 0–9 XXXall 10 · 7 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RANDOLPH NY
2012-01-30 760-800 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 TWNTYNPLMS CA
2012-01-30 810-447 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E FLINT MI
2012-01-30 859-458 0XXX4XXX5XXX6XXX9XXX · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 LANCASTER KY
2012-01-30 859-682 0–9 XXXall 10 · 4 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 VERSAILLES KY
2012-01-30 859-724 0–9 XXXall 10 · 5 holders which blocks → WINDSTREAM KENTUCKY EAST, INC. - LEXINGTON 9690 NICHOLASVL KY
2012-01-30 909-353 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E REDLANDS CA
2012-01-30 913-202 0–9 XXXall 10 · 7 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 KANSASCITY KS
2012-01-30 913-210 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 OLATHE KS
2012-01-27 240-707 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HAGERSTOWN MD
2012-01-27 240-803 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CUMBERLAND MD
2012-01-27 404-426 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-01-27 404-637 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-01-27 410-934 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 ANNAPOLIS MD
2012-01-27 443-240 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BALTIMORE MD
2012-01-27 614-636 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OH 001F COLUMBUS OH
2012-01-27 631-459 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 BRENTWOOD NY
2012-01-27 646-569 0–9 XXXall 10 · 3 holders which blocks → CABLEVISION LIGHTPATH, INC. - NY 7126 NWYRCYZN01 NY
2012-01-27 646-581 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN01 NY
2012-01-27 917-426 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN14 NY
2012-01-27 919-615 0–9 XXXall 10 · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 RALEIGH NC
2012-01-27 919-947 0–9 XXXall 10 · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 GOLDSBORO NC
2012-01-27 925-421 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CONCORD CA
2012-01-27 929-232 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN12 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.