Suggest an editImprove this articleRefine the answer for “What port does HTTP run on by default?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**HTTP runs on port 80 by default.** When a client (for example, a browser) accesses a site over HTTP, it automatically connects to the server on port 80 unless a port is explicitly specified. **Key point:** HTTP → port 80, HTTPS → port 443.Shown above the full answer for quick recall.Answer (EN)Image**HTTP runs on port 80 by default.** --- ## What this means in simple terms When a client (for example, a browser) accesses a site over HTTP, it **automatically connects to the server on port 80**, unless a port is explicitly specified. Example: - `http://example.com` → port **80** - `http://example.com:80` → the same thing, just with the port stated explicitly --- ## Why a port is needed at all A **port** is a way to identify **which exact service** is running on the server. A single server can run several services at once: - a web server (HTTP) - port 80 - a secure web server (HTTPS) - port 443 - mail, FTP, SSH, and other services - each on its own port --- ## A common pair in interviews Interviewers love to ask about both together: - **HTTP** → port **80** - **HTTPS** → port **443** Remembering this pair is already a plus in an interview. --- ## Short answer for an interview Remember this wording: > **HTTP runs on port 80 by default.** If you want, the next question could cover: - **why HTTPS uses port 443** - **whether HTTP can run on another port** - **what happens if the port is blocked by a firewall**For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.