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Roblox Alt Account Detection in 2026: What the Ban API Actually Checks
Three signals. One shared network visit was enough to trigger a permanent enforcement ban. Here's the technical breakdown of how the system works and what actually addresses each layer.
A false positive enforcement ban in February 2026 confirmed what the community suspected: the Roblox Ban API's alt detection runs on IP, HWID, and account link history as separate signals. A house guest logging in once was enough.
- Signal 1: Shared IP. The most commonly triggered signal. Two accounts accessing Roblox from the same IP is enough to link them. A shared home network qualifies.
- Signal 2: HWID (Hardware ID). Accounts used on the same physical device get linked regardless of IP. Rotating your IP without separating device fingerprints leaves this signal intact.
- Signal 3: Account link history. Accounts linked via the Switch Accounts feature have a logged relationship Roblox can query.
- Rotating residential proxies are the wrong architecture here. IP inconsistency across sessions is itself a behavioral flag, and shared pool IPs carry other users' history.
- The correct setup is one ISP static IP per account. TorchProxies ISP Static proxies start at $2.30/IP/month with unlimited bandwidth and SOCKS5/HTTPS switchable from the dashboard.
- The proxy handles the IP layer only. Separate browser profiles are still needed for the HWID layer.
In February 2026, a user on the Roblox Developer Forum filed a bug report documenting something the community had been speculating about for over a year. A guest staying at their home logged into their own Roblox account over the shared home network. That one login was enough for the Ban API's automated enforcement system to flag the homeowner's primary account as an alt of the guest's account, resulting in a permanent enforcement ban across every experience the guest had been removed from.
The report confirmed two things directly. First, the detection does not require accounts to have been created on the same device. A transient IP match is sufficient. Second, the system does not distinguish between two unique users on a shared network. Family members, roommates, guests, dormitories, school networks: the detection treats shared IP as a strong linking signal without additional verification. This is not speculation. It is in the bug report, filed February 20, 2026, publicly accessible on the Dev Forum.
What Did Roblox Actually Launch With the Ban API?
The Ban API launched on June 25, 2024 via Engine and OpenCloud. Alt account detection was included from day one. When a developer bans a user, the system automatically identifies and restricts suspected alternate accounts in real time. Developers can configure whether alt account bans are applied, but the feature is enabled by default, and most game creators leave it on.
Two updates followed the initial launch. On August 5, 2024, Roblox integrated Ban API management into CreatorHub with a visual Ban Management Dashboard. This gave developers a UI to ban up to 50 user IDs at a time, configure whether alt account detection applies, set ban duration, and add public and private ban reasons. On January 29, 2025, Roblox clarified that the dashboard displays only universe-level bans created with ApplyToUniverse set to true. Querying place-level bans still requires the ListUserRestrictions API directly via OpenCloud.
The thing Roblox acknowledged directly in their FAQ is important: the detection is tuned to minimize false positives, but alt accounts will slip through, and some legitimate accounts will be caught incorrectly. They stated explicitly that they expect to expand coverage as more creators use the system. That last part is the signal to pay attention to. The detection will get better. What works today may not work in six months.
What Three Signals Does the Alt Detection Actually Use?
The detection runs on three confirmed signals: shared IP, hardware ID (HWID), and account link history from the Switch Accounts feature. Each one is an independent linking mechanism. You can address one without addressing the others, and the remaining signals still expose the accounts.
Signal 1: Shared IP Address
This is the most commonly triggered signal and the one the February 2026 false positive made undeniable. If two accounts access Roblox from the same IP address, even briefly, the system can link them. The bug report specified it was a single login from a guest over a shared home network. That was enough.
For anyone managing multiple accounts from a single machine with no proxy infrastructure, every account shares the same exit IP. The Ban API sees them all as potentially the same person. That is not a fringe case. It is the default state for most multi-account setups.
Signal 2: HWID (Hardware ID)
Roblox tracks device identifiers to link accounts that have been used on the same hardware. Changing your IP without changing the device fingerprint leaves this signal intact. The two are independent. An account that has a clean IP but a shared HWID is still exposed.
Community testing documented on page 18 of the original Ban API announcement thread showed that Roblox's detection caught 2 out of 8 alt accounts tested on the same PC, same Roblox client, same HWID, and same IP with no spoofers or account managers. The developer's own custom Lua alt detector caught all 8 of the same accounts. The conclusion from that test: Roblox's system is not catching every case today, but it is catching enough, and it is designed to expand.
Signal 3: Account Link History (Switch Accounts)
This is the most overlooked signal. If you have ever used the Switch Accounts feature in Roblox to move between two accounts on the same device, Roblox logs that relationship. The Ban API has access to this account link history. Community members on the Dev Forum confirmed the detection can query accounts linked via the Switch Accounts flow.
Worth noting: a February 3, 2026 bug report indicated that Switch Accounts-linked alts were not always being blocked reliably, suggesting this signal has implementation inconsistencies. That does not make it safe to ignore. The link is logged regardless. Whether the detection queries it consistently today is separate from whether Roblox can query it when the system improves.
| Detection Signal | What It Tracks | What Addresses It | Status |
|---|---|---|---|
| Shared IP | Same exit IP address across accounts | Dedicated IP per account (ISP static proxy) | Active, confirmed |
| HWID | Device hardware identifiers | Separate browser profile per account | Active, partial coverage |
| Account link history | Switch Accounts usage between accounts | Never link accounts via Switch Accounts | Logged, inconsistent enforcement |
| Behavioral patterns | Session timing, play patterns | Natural session spacing, varied timing | Less confirmed, likely evolving |
Why Rotating Residential Proxies Are Not the Right Solution for This
Every other proxy guide covering Roblox recommends rotating residential proxies. This is the wrong answer for multi-account management specifically. It fixes the shared IP problem while creating different problems that matter for this use case.
Reason 1: Roblox sessions expect IP consistency. When you log into a Roblox account, the platform records your IP. If your next session logs in from a completely different IP, that inconsistency is itself a behavioral flag. A real user connecting from their home connection in Bristol does not suddenly appear in Dallas on the next session. A rotating proxy that cycles through a fresh IP on every login produces exactly that pattern. Solving the shared IP problem by rotating is like treating a symptom that creates a new symptom.
Reason 2: Rotating pools share IP reputation. Most residential proxy pools route traffic through a shared pool of IPs used by thousands of customers. Any given IP in that pool has a history. If previous users ran bot activity, violated account terms, or triggered bans on that IP before you, that reputation is attached to the IP you are now using. You inherit another user's risk profile.
Reason 3: Rotation does not help with HWID. The IP signal and the HWID signal are separate. Changing the IP on every request does nothing for the device fingerprint layer.
What ISP Static Proxies Actually Do Differently for Roblox
An ISP static proxy assigns you a dedicated IP address sourced from a real internet service provider, the same type of IP a home broadband user would have. It does not rotate. You hold that IP for the duration of your subscription. Every session from that account comes from the same IP.
For Roblox multi-account management, the correct architecture is one ISP static IP per account. Here is what that addresses against the three detection signals:
- IP signal: Each account has a permanently different exit IP with no history from other users. No sharing, no rotation, no prior user behavior attached to it.
- Behavioral consistency: The account always logs in from the same IP, exactly as a real home user would. There is no inconsistency flag from session to session.
- HWID signal (partial): The IP isolation handles the IP layer. The HWID layer still requires separate browser profiles, but IP isolation removes one of the two primary linking mechanisms.
For someone managing 5 alt accounts: 5 ISP static IPs at $2.30/month equals $11.50/month total. That is the cost of the IP infrastructure layer. TorchProxies ISP static proxies also let you switch authentication type between SOCKS5 and HTTPS directly from the dashboard, without regenerating credentials. If your setup uses mixed protocols across different account workflows, you can switch without rebuilding the configuration from scratch.
What You Still Need Beyond the Proxy (The Part Most Guides Skip)
The proxy handles the IP layer. That is not the complete solution.
Browser fingerprint and HWID. Running all accounts in the same browser on the same machine leaves device fingerprints intact even with different IPs. For users managing two or three accounts, a dedicated Chrome profile per account handles this at the minimum viable level. At five or more accounts, a lightweight anti-detect browser handles fingerprint isolation more systematically.
I will not go deep on anti-detect browser setups in this article because it deserves its own guide. The short version: at two to three accounts, separate Chrome profiles work. At five or more, it is worth looking at a dedicated tool designed for multi-account isolation.
Switch Accounts history. If you have ever linked two accounts via the Switch Accounts feature, that link is logged. A proxy does not undo this. Create separate accounts that have never been linked through that flow and keep them that way.
Session timing. Running all accounts simultaneously with identical session patterns is a behavioral flag. Stagger login times. Avoid logging into all accounts within the same narrow window. Whether Roblox is currently acting on this signal aggressively is unclear, but their stated intention is to expand detection over time.
Account credentials. Linking multiple accounts to the same email domain or the same payment method creates additional relationship signals that sit outside the IP and HWID layer entirely. Keep credentials isolated where you can.
The Minimum Viable Setup for 2026
Clean and actionable. Here is the architecture that addresses the three confirmed signals.
- One ISP static proxy per account at $2.30/IP/month. One dedicated IP that never rotates, never shares reputation with other users, and logs in consistently from the same address every session.
- One browser profile per account. Chrome profiles work for low account counts. For five or more, a dedicated tool handles fingerprint isolation at scale.
- Never use Switch Accounts to link accounts you intend to keep separate. The relationship is logged. There is no way to undo it after the fact.
- Stagger session timing. Do not log into all accounts within the same 10-minute window. Natural variation is the target.
- Keep credentials isolated. Separate email addresses, no shared payment methods where possible.
Quick Decision Framework
Three questions determine the right setup.