NumberResearch Membership · Data 10/01/2026

Recent prefix assignments

374 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 10/01/2026

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 Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
Download CSV ↓
Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 504-844 not yet reported which blocks → SPOK, INC. 6630 NEWORLEANS LA
— 504-846 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-849 5XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-858 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
— 504-861 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-862 0XXX7XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-864 0XXX1XXX3XXX5XXX6XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-865 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-866 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-874 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEWORLEANS LA
— 504-880 not yet reported which blocks → SPOK, INC. 6630 NEWORLEANS LA
— 504-881 1XXX2XXX3XXX4XXX6XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEWORLEANS LA
— 504-883 1XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-884 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEWORLEANS LA
— 504-885 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-887 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-888 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-889 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-891 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-894 4XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-895 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-896 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-897 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-899 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-903 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-904 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J KENNER LA
— 504-905 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
— 504-908 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
— 504-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 504-912 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JESUITBEND LA
— 504-913 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 NEWORLEANS LA
— 504-914 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
— 504-915 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C NEWORLEANS LA
— 504-919 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
— 504-934 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NEWORLEANS LA
— 504-940 4XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-941 0XXX1XXX2XXX3XXX6XXX7XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-942 6XXX9XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-943 2XXX3XXX4XXX7XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-944 1XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-945 3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-947 0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-948 3XXX5XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-949 0XXX4XXX5XXX6XXX7XXX8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWORLEANS LA
— 504-950 not yet reported which blocks → LA
— 504-957 none assigned yet which blocks → VOICESTREAM GSM I, LLC 150C KENNER LA
— 504-958 not yet reported which blocks → LA
— 504-959 not yet reported which blocks → LA
— 504-961 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 504-962 6XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - LA 153F NEWORLEANS LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 10/01/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.