![[Featured image] An IT support specialist is researching subnet masking on their phone while standing outside.](https://images.ctfassets.net/wp1lcwdav1p1/5MdONZS0V0n0GKbrkwZMKp/720f46b486d890cca1edd0f0d952d06d/u0vMT8PL.jpeg?w=330&h=216&q=60&fit=fill&f=faces&fm=jpg&fl=progressive)
What Is a Subnet Mask?
Subnet masks produce more efficient networking and routing by creating subnets. In this article learn more about what subnets are and what they are used for.
August 25, 2023
Article
Coursera’s editorial team is comprised of highly experienced professional editors, writers, and fact-checkers. Our articles are deeply researched and thoroughly reviewed to ensure we are providing trustworthy information and advice for any topic. We understand that taking the next step in your education or career can raise questions. We are here to provide actionable, reliable, and relevant answers so you can achieve your goals.