How to block Roblox on your network
Roblox is one of the most requested blocks in schools, youth centres and offices with younger staff. It runs in a desktop client, a mobile app and on Chromebooks, so one rule is rarely enough.
Start with the quick start on the right. Then use the rest of this guide to cover each device type, set schedules and close the usual workarounds.
10-minute quick start
- Block
roblox.comandrbxcdn.comwith subdomains in your DNS filter or firewall. - Block the Gaming category for student or staff policies.
- Block the VPN / Proxy / Anonymizers category on the same policies.
- Allow DNS only to your resolver; drop port 853.
- In Google Admin or MDM, block the Roblox app.
- Test from a student device with mobile data off.
Why schools and organisations block Roblox
Roblox is a platform of user-made games with chat, trading and a virtual currency. That mix creates more reasons to block it than a typical game. The six below are the ones schools and employers raise most.
Lesson time
Students open it during class and between tasks. A network block removes the option on school devices.
Contact with strangers
In-game chat and friend requests connect children with adults they do not know, a core safeguarding concern.
Scams and phishing
"Free Robux" sites, fake trading pages and copied login screens target young users and steal accounts.
Spending
The currency is bought with real money. Schools prefer students not to buy items on school devices.
Bandwidth at peak times
Downloads and real-time game traffic from many devices at once compete with lessons and video calls.
Workplace conduct
In offices, shops and warehouses, gaming on work devices is an easy policy line to draw.
Verified Roblox domains: what to block and what it breaks
Roblox runs on two main official domains. Block both with all subdomains. Roblox hostnames under them change, and new related sites appear, so pair this with the Gaming category.
Block these
roblox.comWebsite, sign-in, account pages, APIs and the launch step that starts a game, on hosts such as www, apis and assetgame.rbxcdn.comContent delivery: the player installer (setup.rbxcdn.com), scripts, images and game assets.Gaming categoryFan sites, trading sites, game wikis and new Roblox-related domains as they are categorized.
What breaks, on purpose
- Roblox PlayerCannot download, update or sign in.
- Roblox StudioThe creation tool needs the same domains. If a coding class uses it, see the exceptions section.
- Embedded videos about RobloxStill work, because they live on video sites. Block those separately if needed.
Once a game launches, Roblox sends real-time game traffic over UDP on high ports (Roblox documents the range 49152 to 65535). Do not try to block that whole range: other apps use it. Blocking the domains stops the game before it reaches that stage.
Check any related domain from your logs with the domain category lookup, and see what the Gaming category includes.
Use schedules instead of a permanent block
Many organisations do not mind Roblox at all hours. They mind it during lessons or shifts. Most firewalls and DNS filters let you attach a time schedule to a policy.
| Setting | During the day | Evenings and weekends | Notes |
|---|---|---|---|
| Day school | Blocked | Blocked | School devices go home; device-level rules keep the block there. |
| Boarding or residential school | Blocked in lesson and study hours | Allowed in free time | Use a "free time" schedule per house or year group. |
| Library public Wi-Fi | Allowed, rate-limited | Allowed | Some libraries block games on public PCs only, to keep them free for study. |
| Youth centre | Blocked in sessions | Allowed in drop-in time | Pair with chat safety guidance for staff. |
| Office or retail | Blocked | Blocked on work devices | Guest Wi-Fi can follow a lighter policy. |
Classroom exceptions. Coding clubs and design classes sometimes use Roblox Studio. Create a lab segment or a directory group with Roblox allowed, give it an end date, and keep the default student policy blocking it.
Step-by-step for each environment
Pick the rows that match your network and devices. Most schools need at least two: the network layer plus the device platform they manage.
- Open the router's parental control or blocked websites page.
- Add roblox.com and rbxcdn.com.
- Better: set the router's DNS to a filtering resolver with Gaming blocked.
- Restart devices or wait for DNS caches to clear.
- Block the games category in the URL filter profile for the student or staff policy.
- Add roblox.com and rbxcdn.com to a custom block list.
- Add the Roblox application signature to application control.
- Attach a schedule if you only block during lessons.
- Block QUIC so the firewall can see server names.
- Point every SSID at the filtering resolver.
- Block Gaming and VPN / Proxy / Anonymizers in the student policy.
- Add the two domains as explicit blocks.
- Force port 53 to your resolver and drop DNS over TLS.
- Go to Devices, Chrome, Settings, Users and browsers, then URL blocking.
- Add roblox.com and rbxcdn.com for student organisational units.
- In Apps, block the Roblox Android app from Google Play for those units.
- Restrict extensions to an approved list.
- Push roblox.com and rbxcdn.com to the browser URL block list for the device groups in scope.
- Block the Roblox Player installer and Store app with application control.
- On supervised iPads, block or hide the Roblox app with a restrictions profile.
- Add the domains to the web content filter payload.
- On Android Enterprise, leave Roblox off the managed Google Play list.
- Block VPN profile installs.
App vs browser: where Roblox actually runs
The website is only a front door. Play happens in a client, and the client differs by device. That is why the quick start pairs a network rule with an app block on every managed platform you run.
Windows and Mac
The website starts a download of Roblox Player, which then talks to roblox.com and rbxcdn.com directly. Application control stops it even if the domains slip through.
Chromebooks
Runs as an Android app from Google Play. Block the app in Google Admin as well as the URLs.
Phones and tablets
Native app. Blocked on your Wi-Fi by DNS, everywhere by MDM on owned devices.
Consoles
Consoles on guest or staff Wi-Fi follow DNS rules. Most schools put consoles, if any, on their own network.
Personal devices (BYOD)
You cannot remove the app, but a filtered BYOD SSID stops it signing in or loading games while the device is on your Wi-Fi.
Guest Wi-Fi
Visitors, parents and after-school clubs use it. Decide whether gaming is allowed there and write it down, so staff give the same answer.
School devices at home. A network block ends at the school gate. If school Chromebooks or iPads go home, the Google Admin and MDM rules are what keep Roblox off them in the evening, so make sure those layers are set even if the school network is filtered.
How students get around a Roblox block
Workarounds spread quickly among students, often within a day of a new block. These are the ones to plan for, with the control that closes each.
Browser cloud gaming
Some websites stream mobile games, including Roblox, inside a browser tab. The traffic goes to the streaming site, not to Roblox. Keep the Gaming category blocked so these sites are caught as they are categorized.
VPN and proxy sites
Block the VPN / Proxy / Anonymizers category. New proxy sites are created every day, so a daily-updated category matters more than any list.
"Unblocked games" sites
Pages that collect games for school networks are a category of their own in practice. They are labelled Gaming in our database.
Personal hotspots
Out of reach of the network. On school devices, Google Admin and MDM rules still apply wherever the device connects.
Changing DNS
Force all DNS to your resolver at the firewall, block DNS over TLS, and disable browser DNS over HTTPS by policy.
Guest network
Students sometimes find the guest Wi-Fi password. Give the guest network the same gaming policy, or a captive portal.
Test the block like a student would
Use a real student device and account, not an admin machine. Turn off mobile data on phones before testing. Write down each result with the date, so you have a record to show leadership and to compare against after the next firewall or filter update.
- Run
nslookup www.roblox.comfrom a student device. The resolver should return a block. - Open roblox.com in the browser. The block page should appear.
- Try to download the player installer. The download should fail.
- On a Chromebook, open the Play Store and search for Roblox. It should be unavailable.
- Open a browser cloud gaming site from your logs or a known list. It should be blocked as Gaming.
- Try a free VPN app or extension. It should fail to connect.
- If you use schedules, repeat a test outside the blocked hours.
- Check the logs for Gaming category hits by device and time.
Reading the logs after you switch the block on
The first week of logs tells you whether the block is working and where the gaps are. These are the patterns to look for and what each one usually means.
| What you see | What it usually means | What to do |
|---|---|---|
| Many blocked roblox.com lookups from one device, all day | The installed client keeps retrying in the background. | Remove or block the app on that device through MDM or application control. |
| Blocked rbxcdn.com hits but no roblox.com hits | A cached session or an asset request from an embedded page. | Usually harmless. Confirm the game itself cannot start. |
| Spike in VPN / Proxy category hits after go-live | Students are trying workarounds. | Expected for a week or two. Share device names with pastoral staff if it continues. |
| Gaming hits on unfamiliar domains | Cloud play, unblocked-games or fan sites. | Already blocked by the category. Check a sample in the domain lookup to be sure. |
| No Roblox hits at all from a building | Either no one tries, or that building uses another resolver. | Check DHCP and firewall DNS rules for that site. |
| Phishing category hits mentioning Robux | Scam pages are reaching students through links. | Keep the block, and add a short scam warning to digital citizenship lessons. |
Common mistakes to avoid
Blocking only roblox.com
Leaves the installer and assets on rbxcdn.com reachable, and misses every related site. Block both domains plus the category.
Forgetting the staff network
Students often learn the staff Wi-Fi password. Apply a gaming policy there too, or require sign-in per user.
Blocking high UDP ports
A broad UDP block breaks video calls, voice and other apps. Rely on domain, category and app control instead.
No exception process
When a teacher's lesson breaks, the block gets switched off for everyone. A named exception group prevents that.
Testing as an admin
Admin accounts often bypass filtering. Always test with a real student account on a real student device.
Leaving the VPN category open
Without it, a Roblox block lasts as long as it takes one student to share a VPN app with the class.
Category-based blocking with our database
Blocking roblox.com is easy. Keeping up with the fan sites, trading sites, cloud play pages and scam domains around it is not. That is the job of the Gaming category.
Gaming
Roblox, its CDN, game portals, unblocked-games sites and cloud play pages.
VPN / Proxy / Anonymizers
The bypass category. Block it everywhere you block Gaming.
Malware / Phishing / Suspicious
Free Robux scams and copied login pages. Keep it on for every policy.
See also K-12 school web filtering and the category database for parental control apps.
Related guides: how to block Minecraft (and allow Minecraft Education) and how to block Fortnite.
Roblox blocking FAQ
What domains do I need to block for Roblox?
Block roblox.com and rbxcdn.com with all subdomains. Together they cover the website, sign-in, the game launcher download and most game assets. Add the Gaming category so related and new domains are caught too.
Can students still play Roblox after I block the domains?
Usually not on your network, because the client cannot sign in or download experiences. The usual exceptions are mobile data, VPN apps and browser-based cloud gaming sites, so block the VPN and Gaming categories as well.
How do I block Roblox on Chromebooks?
In Google Admin, add roblox.com and rbxcdn.com to Chrome URL blocking for student organisational units, and block the Roblox Android app in the Play app settings. Pair it with a category filter for gaming and proxy sites.
Can I allow Roblox after school hours only?
Yes, if your firewall or DNS filter supports scheduled policies. Create a schedule for lesson times, apply the Gaming block during it, and allow it outside those hours. Residential schools and youth centres often do this.
A teacher wants to use Roblox for a lesson. What should I do?
Create an exception group or a lab network segment with Roblox allowed, scoped to that class and given an end date. Keep the default student policy blocking it.
Is blocking Roblox enough to stop Robux scams?
No. Free Robux and fake login sites sit on other domains. Keep Malware / Phishing / Suspicious and newly registered domain protections on for every device.
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Roblox, Robux and Roblox Studio are trademarks of Roblox Corporation. Google, Chrome, Chromebook and Android are trademarks of Google LLC; Microsoft and Intune of Microsoft Corporation; iPad of Apple Inc.
They are used here only to identify the products discussed. Web Filtering Database is not affiliated with, sponsored or endorsed by any of these companies.