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 787

OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR 33

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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
—	787-301	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	GUAYANILLA	PR
—	787-302	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	RIOPIEDRAS	PR
—	787-303	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SANTURCE	PR
—	787-304	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	PUEBLOVIEJ	PR
—	787-305	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	TRUJILLOAL	PR
—	787-330	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	LEVITTOWN	PR
—	787-331	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	GUAYNABO	PR
—	787-332	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	RIOPIEDRAS	PR
—	787-333	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	ARECIBO	PR
—	787-334	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	RIO GRANDE	PR
—	787-335	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	MAYAGUEZ	PR
—	787-336	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	MANATI	PR
—	787-337	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	CAGUAS	PR
—	787-338	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	BAYAMONNOR	PR
—	787-339	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SANTURCE	PR
—	787-386	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SANTURCE	PR
—	787-389	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	HUMACAO	PR
—	787-416	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	ARROYO	PR
—	787-417	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SANTURCE	PR
—	787-418	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	CAROLINA	PR
—	787-419	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SANTURCE	PR
—	787-488	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	BAYAMONSUR	PR
—	787-489	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	BAYAMONNOR	PR
—	787-490	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	CAYEY	PR
—	787-491	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	GURABO	PR
—	787-492	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	PONCE	PR
—	787-493	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	AGUADILLA	PR
—	787-494	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	FAJARDO	PR
—	787-495	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	NARANJITO	PR
—	787-496	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SAN GERMAN	PR
—	787-497	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	SANTURCEES	PR
—	787-498	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	VEGA BAJA	PR
—	787-499	not yet reported which blocks →	OPTIVON TELECOMMUNICATIONS SERVICES, INC. - PR	087D	PONCE	PR

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.