# IPv6

CEFR C2 · Noun

Source: https://englishreference.com/word/ipv6
Updated: 2026-08-15

## Definition

Stands for Internet Protocol version 6. It is the newest system for giving every device on the internet its own unique address so they can talk to each other.

For teachers: Abbreviation for Internet Protocol version 6. The most recent version of the communications protocol that provides an identification and location system for computers on networks and routes traffic across the internet.

## Examples

- IPv6 provides a unique address for every device on the internet.
- Because the world ran out of older addresses, most modern networks now use IPv6.
- By utilizing a 128-bit addressing scheme, IPv6 ensures that billions of new devices can connect simultaneously without address exhaustion.

## Usage notes

- Typically used as an uncountable noun or as a modifier before another noun (e.g., 'IPv6 address').

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.