diff --git a/Tusker/DomainBlocks.plist b/Tusker/DomainBlocks.plist
index 310ded3b..6af8e26a 100644
--- a/Tusker/DomainBlocks.plist
+++ b/Tusker/DomainBlocks.plist
@@ -2,6 +2,7 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <array>
+	<string>counter\.social</string>
 	<string>gab\..+</string>
 </array>
 </plist>
diff --git a/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift b/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
index db87fe76..f27f05a8 100644
--- a/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
+++ b/Tusker/Screens/Onboarding/InstanceSelectorTableViewController.swift
@@ -18,6 +18,12 @@ fileprivate let instanceCell = "instanceCell"
 
 class InstanceSelectorTableViewController: UITableViewController {
     
+    static var blocks: [NSRegularExpression] = {
+        guard let path = Bundle.main.path(forResource: "DomainBlocks", ofType: "plist"),
+            let array = NSArray(contentsOfFile: path) as? [String] else { return [] }
+        return array.compactMap { try? NSRegularExpression(pattern: $0, options: .caseInsensitive) }
+    }()
+    
     weak var delegate: InstanceSelectorTableViewControllerDelegate?
 
     var dataSource: DataSource!
@@ -100,7 +106,7 @@ class InstanceSelectorTableViewController: UITableViewController {
         loadRecommendedInstances()
     }
     
-    private func parseURLComponents(input: String) -> URLComponents {
+    private func parseURLComponents(input: String) -> URLComponents? {
         // we can't just use the URLComponents(string:) initializer, because when given just a domain (w/o protocol), it interprets it as the path
         var input = input
         var components = URLComponents()
@@ -125,13 +131,24 @@ class InstanceSelectorTableViewController: UITableViewController {
             components.port = Int(parts.last!)
         }
         components.host = input
+        if Self.blocks.contains(where: { $0.numberOfMatches(in: input, range: NSRange(location: 0, length: input.utf16.count)) > 0 }) {
+            return nil
+        }
         return components
     }
     
     private func updateSpecificInstance(domain: String) {
         activityIndicator.startAnimating()
         
-        let components = parseURLComponents(input: domain)
+        guard let components = parseURLComponents(input: domain) else {
+            var snapshot = dataSource.snapshot()
+            if snapshot.indexOfSection(.selected) != nil {
+                snapshot.deleteSections([.selected])
+                dataSource.apply(snapshot)
+            }
+            activityIndicator.stopAnimating()
+            return
+        }
         let url = components.url!
 
         let client = Client(baseURL: url, session: .appDefault)
diff --git a/Tusker/Screens/Onboarding/OnboardingViewController.swift b/Tusker/Screens/Onboarding/OnboardingViewController.swift
index 46e87f24..35992297 100644
--- a/Tusker/Screens/Onboarding/OnboardingViewController.swift
+++ b/Tusker/Screens/Onboarding/OnboardingViewController.swift
@@ -17,12 +17,6 @@ protocol OnboardingViewControllerDelegate {
 
 class OnboardingViewController: UINavigationController {
 
-    static var blocks: [NSRegularExpression] = {
-        guard let path = Bundle.main.path(forResource: "DomainBlocks", ofType: "plist"),
-            let array = NSArray(contentsOfFile: path) as? [String] else { return [] }
-        return array.compactMap { try? NSRegularExpression(pattern: $0, options: .caseInsensitive) }
-    }()
-    
     var onboardingDelegate: OnboardingViewControllerDelegate?
     
     var instanceSelector = InstanceSelectorTableViewController()