NumberResearch Membership · Data 09/25/2026

Recent prefix assignments

358 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026

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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 850-537 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 CRESTVIEW FL
— 850-539 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 HAVANA FL
— 850-543 none assigned yet which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 FTWALTNBCH FL
— 850-544 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TALLAHASSE FL
— 850-545 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TALLAHASSE FL
— 850-547 6XXX which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 BONIFAY FL
— 850-548 2XXX8XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 WESTVILLE FL
— 850-551 not yet reported which blocks → PORTA-PHONE DIV OF JOHN H. PHIPPS DBA AM MESG SVC 6771 TALLAHASSE FL
— 850-552 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-553 0XXX1XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST FL
— 850-556 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 TALLAHASSE FL
— 850-560 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 PANAMACITY FL
— 850-561 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-562 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-563 8XXX9XXX which blocks → PAETEC ITEL, LLC 829J PNAMACYBCH FL
— 850-565 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → TERRA NOVA TELECOM INC. 145J GULFBREEZE FL
— 850-566 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLAHASSE FL
— 850-567 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLAHASSE FL
— 850-569 7XXX which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 GREENWOOD FL
— 850-570 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLAHASSE FL
— 850-572 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 PENSACOLA FL
— 850-574 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-575 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-576 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-577 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-578 not yet reported which blocks → CONSOLIDATED COMMUNICATIONS OF FLORIDA COMPANY 0291 KEATON BCH FL
— 850-579 none assigned yet which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 GREENWOOD FL
— 850-580 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-581 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 FTWALTNBCH FL
— 850-582 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FTWALTNBCH FL
— 850-584 not yet reported which blocks → CONSOLIDATED COMMUNICATIONS OF FLORIDA COMPANY 0291 PERRY FL
— 850-585 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FTWALTNBCH FL
— 850-587 not yet reported which blocks → FRONTIER COMMUNICATIONS OF THE SOUTH, LLC - FL 4465 MOLINO FL
— 850-589 not yet reported which blocks → PAETEC ITEL, LLC 829J LYNN HAVEN FL
— 850-591 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLAHASSE FL
— 850-592 7XXX which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 GREENWOOD FL
— 850-593 7XXX8XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 SNEADS FL
— 850-594 2XXX which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 GREENWOOD FL
— 850-595 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 PENSACOLA FL
— 850-597 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TALLAHASSE FL
— 850-598 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 FTWALTNBCH FL
— 850-599 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 TALLAHASSE FL
— 850-607 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J PENSACOLA FL
— 850-608 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J SANROSABCH FL
— 850-609 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 SHALIMAR FL
— 850-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX FL
— 850-613 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J SHALIMAR FL
— 850-621 1XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FTWALTNBCH FL
— 850-622 not yet reported which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 SANROSABCH FL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.