NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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 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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Quick find in this area code:
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 601-591 3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BRANDON MS
— 601-592 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-593 not yet reported which blocks → MS
— 601-594 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSON MS
— 601-595 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 MERIDIAN MS
— 601-597 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 NATCHEZ MS
— 601-598 not yet reported which blocks → FRANKLIN TELEPHONE COMPANY, LLC 0454 JANICE MS
— 601-599 not yet reported which blocks → COMCAST IP PHONE, LLC 318J HATTIESBG MS
— 601-602 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J HATTIESBG MS
— 601-603 2XXX3XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 MIZE MS
— 601-604 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
— 601-605 7XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MADISON MS
— 601-606 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 HATTIESBG MS
— 601-607 0XXX1XXX2XXX5XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MADISON MS
— 601-608 7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J JACKSON MS
— 601-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX MS
— 601-613 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 JACKSON MS
— 601-616 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MERIDIAN MS
— 601-618 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
— 601-619 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-625 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 FOREST MS
— 601-626 2XXX3XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-629 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-630 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-631 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-632 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 TOOMSUBA MS
— 601-634 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-635 not yet reported which blocks → DECATUR TEL. CO., INC. 0451 DECATUR MS
— 601-636 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-638 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-639 none assigned yet which blocks → FRANKLIN TELEPHONE COMPANY, LLC 0454 CROSBY MS
— 601-641 3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 COLLINS MS
— 601-642 1XXX2XXX3XXX4XXX6XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VICKSBURG MS
— 601-643 1XXX3XXX4XXX6XXX7XXX9XXX · 5 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 WESSON MS
— 601-644 4XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-645 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CENTREVL MS
— 601-646 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 NEWTONHKRY MS
— 601-648 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 BUCKATUNNA MS
— 601-649 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAUREL MS
— 601-650 2XXX4XXX5XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PHILA MS
— 601-654 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 CARTHAGE MS
— 601-655 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MERIDIAN MS
— 601-656 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PHILA MS
— 601-657 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LIBERTY MS
— 601-659 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 ENTERPRISE MS
— 601-660 9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 NATCHEZ MS
— 601-661 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 VICKSBURG MS
— 601-663 2XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 PHILA MS
— 601-664 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 JACKSON MS
— 601-665 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLULAR SOUTH, INC. 6581 JACKSON MS

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.