NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, 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
— 228-435 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
— 228-436 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
— 228-437 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
— 228-460 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → PAETEC ITEL, LLC 829J MOSS POINT MS
— 228-463 3XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-465 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BILOXI MS
— 228-466 7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-467 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-469 1XXX6XXX7XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-474 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOSS POINT MS
— 228-475 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOSS POINT MS
— 228-493 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 BAYSTLOUIS MS
— 228-497 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 228-518 not yet reported which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 GULFPORT MS
— 228-522 3XXX6XXX8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-523 0XXX3XXX6XXX7XXX9XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
— 228-533 2XXX3XXX5XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PEARLINGTN MS
— 228-539 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-546 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J BILOXI MS
— 228-547 none assigned yet which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
— 228-549 0XXX3XXX5XXX6XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PASCAGOULA MS
— 228-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST MS
— 228-563 0XXX3XXX4XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-574 0XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → AT&T - LOCAL 7421 GULFPORT MS
— 228-575 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-586 3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASSCHRSTN MS
— 228-588 1XXX4XXX5XXX7XXX8XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 HURLEY MS
— 228-594 5XXX7XXX8XXX9XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BILOXI MS
— 228-596 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GULFPORT MS
— 228-601 not yet reported which blocks → MS
— 228-604 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 GULFPORT MS
— 228-609 3XXX4XXX6XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 GULFPORT MS
— 228-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 228-617 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 GULFPORT MS
— 228-623 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
— 228-627 1XXX2XXX4XXX5XXX7XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PASCAGOULA MS
— 228-641 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TANNERWLMS MS
— 228-662 not yet reported which blocks → MS
— 228-669 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 GULFPORT MS
— 228-679 4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J GULFPORT MS
— 228-688 0XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-689 1XXX3XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BAYSTLOUIS MS
— 228-696 3XXX4XXX7XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS
— 228-697 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 BILOXI MS
— 228-700 not yet reported which blocks → MS
— 228-701 not yet reported which blocks → PAETEC ITEL, LLC 829J GULFPORT MS
— 228-702 not yet reported which blocks → PAETEC ITEL, LLC 829J BILOXI MS
— 228-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 228-712 0XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PASCAGOULA MS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.