1. Search Ban
Your tweets are completely blocked from search results. If someone searches for keywords you used or types from:yourname, nothing shows up.
Protect your reach. F**k shadow bans.
Check if your Twitter/X account is shadowbanned. Instant live test for search bans, ghost bans, and reply deboosting.
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Learn How Shadowbans Work
Helpful Guide
Am I Shadowbanned on Twitter? How to Check and What It Means
A Twitter shadowban is when Twitter secretly limits who sees your tweets and replies without telling you. You can still post, like, and reply normally, but your content won't show up in search results, feeds, or reply threads. Here are the 4 main types of shadowbans, how to tell if you have one, and how to fix it fast.
3 Quick Signs You Might Be Shadowbanned
Sudden drop in views
Your likes, retweets, and comments drop sharply on new posts for no clear reason.
Missing from search
Searching for your handle or typing from:yourname shows no recent tweets.
Replies don’t appear
Friends cannot see your replies in threads unless they click “Show probable spam” or visit your profile.
2. Suggestion Ban
Twitter stops suggesting your handle in the search dropdown box when people search for your name. It also keeps your tweets off the “For You” feed.
3. Ghost Ban
Your replies on other people's tweets are hidden. You can see your own reply, but nobody else in the thread can see it unless they visit your profile directly.
4. Reply Deboosting
Your replies get pushed all the way to the bottom of the conversation, hidden behind a button that says “Show probable spam” or “Show more replies”.
What Helps vs What Hurts Your Reach on X
Official Algorithm Scores| Action | Score | What it Means |
|---|---|---|
| Someone Copies Link to Tweet | +20.0 | Huge boost! Worth 40 normal likes. |
| Conversation with Mutual Follow | +20.0 | Replying back and forth with friends boosts both accounts. |
| Retweet | +1.0 | Worth 2 normal likes. |
| Like | +0.5 | Standard engagement. |
| Bookmark | 0.0 | Bookmarks give 0 score in the algorithm. |
| External Link in Tweet | +0.2 | Demoted. Twitter prefers tweets without outside links. |
| Someone Blocks You | -31.2 | Cancels out 62 likes. |
| Someone Mutes You | -58.8 | Cancels out 118 likes. |
| Someone Reports You for Spam | -234.0 | Instant shadowban. Cancels out 468 likes. |
Frequently Asked Questions
How do I test an account for a Twitter shadowban?
Type any Twitter/X handle into the search box at the top of the page. Live Twitter search indexes, autocomplete suggestions, ghost reply threads, and reply deboosting filters are inspected in seconds with zero login required.
How long does a Twitter shadowban last?
Most algorithmic penalties (like reply deboosting or suggestion filters) clear automatically in 24 to 72 hours once aggressive actions stop. Severe bans caused by spam reports take 5 to 7 days of posting inactivity.
How do I fix a Twitter shadowban quickly?
Stop posting external links for 3 to 5 days, revoke unused third-party application permissions in Twitter Settings > Security > Apps, and engage only in constructive replies with mutual followers to trigger positive algorithmic weights.
Is this Twitter shadowban checker free?
Yes, FSB Sentinel is 100% free with no account or password required. A few small, closable ads help cover server costs. You can check any public handle and view full telemetry anytime.
How FSB Works
FSB looks at an account exactly the way the public and X's algorithm see it: logged out. It runs live tests, compares several independent data sources and only shows a result once it has been verified.
208
Accounts monitored
Public profiles tracked on FSB
208
Checked in the last 24h
Fresh results, not old snapshots
149
Changes detected today
New bans, lifted bans, new best posts
7 / 7
Systems online now
Data sources and network routes
What happens when you check an account
Five steps, usually done in a few seconds.
- 1. Find the account Works with a handle, a profile link or a numeric user ID, even after a rename.
- 2. Run 4 live tests Search, suggestions, replies and reply ranking are tested logged out.
- 3. Cross-check sources Profile and post numbers are compared across independent sources.
- 4. Confirm Any new restriction is tested again, fresh, before it is shown.
- 5. Verified result You see which restriction is active, if any, plus stats and history.
The four shadowban tests
Each test is scored on its own, so you know exactly what is limited instead of a vague "maybe shadowbanned".
Search Ban
Can people still find your posts in search, including searches for your account?
Suggestion Ban
Does your handle still show up while someone types it into the search box?
Ghost Ban
Are your replies still visible to other people inside conversations?
Reply Deboosting
Are your replies pushed down behind "show more replies" or spam filters?
18+ profiles are hidden from logged-out search by X's SafeSearch for everyone. FSB recognizes this and never reports it as a search ban, one of the most common false alarms on other checkers.
Why there are no false alarms
Most checkers send one request and show whatever comes back, so a hiccup on X becomes a "shadowban". FSB gives every test one of three outcomes:
ClearThe test passed. Shown as clean.
RestrictedThe test failed. Shown only after a fresh re-test confirms it.
UnknownX timed out or answered partially. The last confirmed result is kept.
A status also has to show up consistently before it changes, so one unstable answer can't flip an account back and forth.
Where the numbers come from
Followers, likes, reposts, replies and views are collected from several independent sources and ranked by how trustworthy they are.
X's public dataPrimary
X's own official figures. When they're available, they win.
FixTweetCross-check
Open-source embed service used to verify and fill in posts.
vxTwitterFallback
Steps in when the other sources are slow or unavailable.
A source that fails or returns incomplete data never overwrites numbers that were already confirmed.
How post statistics are built
"Best & Notable Posts" and engagement stats compare an account's whole reachable history, not just its latest 20 posts.
Full timeline
Older posts are collected in the background and kept.
Pinned posts
Always included, even when they are years old.
Reposts excluded
Other people's posts never count toward your stats.
Deleted posts removed
Posts deleted on X disappear here too.
How fresh the data is
FSB keeps checking on its own, at a steady, respectful pace that never floods X or any public service.
- Every 90 s Each data source and network route is tested and shown on the status page.
- Every 5 min Profiles that someone has open are re-checked live.
- Every 24 h Every account on the Global Board gets a fresh check.
- Continuously Timelines are rebuilt in the background for complete post history.
How does FSB Sentinel check for a Twitter/X shadowban?
FSB runs four separate live tests from a logged-out point of view, exactly how the public and the algorithm see an account: whether posts appear in search (Search Ban), whether the handle appears in search suggestions (Suggestion Ban), whether replies stay visible inside threads (Ghost Ban) and whether replies are pushed behind "show more replies" (Reply Deboosting). Each test is scored independently, so you see exactly which restriction is active instead of a single vague verdict.
Where does FSB get its data?
FSB combines several independent public sources: X's own public web data for profiles, timelines and official engagement counts, plus open-source embed services such as FixTweet and vxTwitter as cross-checks and fallbacks. No source is trusted blindly. Every value is compared across sources, official counts take priority over third-party copies, and a failed or partial response never overwrites data that was already confirmed.
Why is FSB data more reliable than other shadowban checkers?
Most checkers run one request and show whatever comes back, so a single hiccup on X turns into a false shadowban. FSB treats every result as confirmed, clear or unknown, re-tests any new restriction before publishing it, keeps the last confirmed state when X is unstable and never reports a search ban that X's own SafeSearch filters would cause anyway. Profiles are re-checked automatically every day, post statistics are rebuilt from the full timeline rather than a small sample, and the whole system is monitored live on a public status page.
FSB only reads public information. No password, no X login, nothing is ever posted. Developers can use the same verified results through the free JSON API.
