NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 228
BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 66
NEW CINGULAR WIRELESS PCS, LLC - GA 26
PAETEC ITEL, LLC 25
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 20
ONVOY, LLC - MS 16
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
— 228-731 1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
— 228-760 4XXX8XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 GULFPORT MS
— 228-761 5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MS 719E PASCAGOULA MS
— 228-762 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-769 4XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-797 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BAYSTLOUIS MS
— 228-806 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
— 228-808 not yet reported which blocks → SPOK, INC. 6630 GULFPORT MS
— 228-809 0XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 228-813 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-818 7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 OCEAN SPG MS
— 228-822 6XXX7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-826 6XXX7XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VANCLEAVE MS
— 228-831 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-832 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-850 not yet reported which blocks → SPOK, INC. 6630 GULFPORT MS
— 228-860 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 BILOXI MS
— 228-861 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 BILOXI MS
— 228-863 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-864 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-865 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-867 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-868 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-870 0XXX3XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-871 5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-872 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 OCEAN SPG MS
— 228-875 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 OCEAN SPG MS
— 228-880 not yet reported which blocks → SPOK, INC. 6630 GULFPORT MS
— 228-896 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-897 0XXX8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 228-918 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
— 228-934 3XXX5XXX6XXX8XXX9XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-935 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-938 7XXX8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-950 not yet reported which blocks → MS
— 228-958 not yet reported which blocks → MS
— 228-959 not yet reported which blocks → MS
— 228-976 not yet reported which blocks → MS
— 228-985 not yet reported which blocks → MS
— 228-988 not yet reported which blocks → MS
— 228-990 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 PASCAGOULA MS
— 228-993 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-994 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.