diff --git a/api/src/ids.rs b/api/src/ids.rs
index 871a38c6..8dc9ef11 100644
--- a/api/src/ids.rs
+++ b/api/src/ids.rs
@@ -8,8 +8,9 @@ use thiserror::Error;
 
 /// A scope name, like `user` or `admin`. The name is not prefixed with an @.
 /// The name must be at least 2 characters long, and at most 20 characters long.
-/// The name must only contain alphanumeric characters and hyphens.
-/// The name must not start or end with a hyphen.
+/// The name must only contain alphanumeric characters, hyphens, and dots.
+/// The name must not start or end with a hyphen or dot.
+/// The name must not contain consecutive hyphens or dots.
 #[derive(Clone, PartialEq, Eq, Hash)]
 pub struct ScopeName(String);
 
@@ -26,7 +27,9 @@ impl ScopeName {
     if !name
       .chars()
       // temp allow underscores
-      .all(|c| c.is_ascii_lowercase() || c.is_ascii_digit() || c == '-')
+      .all(|c| {
+        c.is_ascii_lowercase() || c.is_ascii_digit() || c == '-' || c == '.'
+      })
     {
       return Err(ScopeNameValidateError::InvalidCharacters);
     }
@@ -35,10 +38,18 @@ impl ScopeName {
       return Err(ScopeNameValidateError::LeadingOrTrailingHyphens);
     }
 
+    if name.starts_with('.') || name.ends_with('.') {
+      return Err(ScopeNameValidateError::LeadingOrTrailingDots);
+    }
+
     if name.contains("--") {
       return Err(ScopeNameValidateError::DoubleHyphens);
     }
 
+    if name.contains("..") {
+      return Err(ScopeNameValidateError::DoubleDots);
+    }
+
     Ok(ScopeName(name))
   }
 }
@@ -135,15 +146,21 @@ pub enum ScopeNameValidateError {
   TooLong,
 
   #[error(
-    "scope name must contain only lowercase ascii alphanumeric characters and hyphens"
+    "scope name must contain only lowercase ascii alphanumeric characters, hyphens, and dots"
   )]
   InvalidCharacters,
 
   #[error("scope name must not start or end with a hyphen")]
   LeadingOrTrailingHyphens,
 
+  #[error("scope name must not start or end with a dot")]
+  LeadingOrTrailingDots,
+
   #[error("scope name must not contain double hyphens")]
   DoubleHyphens,
+
+  #[error("scope name must not contain double dots")]
+  DoubleDots,
 }
 
 /// A scope description, like 'This is a user scope' or 'Admin scope'.
@@ -992,6 +1009,11 @@ mod tests {
     assert!(ScopeName::try_from("foo-123-bar").is_ok());
     assert!(ScopeName::try_from("f123").is_ok());
     assert!(ScopeName::try_from("foo-bar-baz-qux").is_ok());
+    // Test valid scope names with dots
+    assert!(ScopeName::try_from("my.org").is_ok());
+    assert!(ScopeName::try_from("foo.bar").is_ok());
+    assert!(ScopeName::try_from("foo.bar.baz").is_ok());
+    assert!(ScopeName::try_from("org.name-123").is_ok());
 
     // Test invalid scope names
     assert!(ScopeName::try_from("").is_err());
@@ -1007,6 +1029,12 @@ mod tests {
     assert!(ScopeName::try_from("-123-foo").is_err());
     assert!(ScopeName::try_from("foo-123-bar-").is_err());
     assert!(ScopeName::try_from("@foo").is_err());
+    // Test invalid scope names with dots
+    assert!(ScopeName::try_from(".foo").is_err());
+    assert!(ScopeName::try_from("foo.").is_err());
+    assert!(ScopeName::try_from("foo..bar").is_err());
+    assert!(ScopeName::try_from(".org").is_err());
+    assert!(ScopeName::try_from("test.").is_err());
   }
 
   #[test]
diff --git a/frontend/utils/ids.ts b/frontend/utils/ids.ts
index 134ef45f..36dc8328 100644
--- a/frontend/utils/ids.ts
+++ b/frontend/utils/ids.ts
@@ -6,8 +6,14 @@ export const validateScopeName = (name: string) => {
   if (name.length < 3) {
     return "Name must be at least 3 characters.";
   }
-  if (!/^[a-zA-Z0-9-_]+$/.test(name)) {
-    return "Name can only contain letters, numbers, dashes, and underscores.";
+  if (!/^[a-z0-9-.]+$/.test(name)) {
+    return "Name can only contain lowercase letters, numbers, dashes, and dots.";
+  }
+  if (name.startsWith(".") || name.endsWith(".")) {
+    return "Name must not start or end with a dot.";
+  }
+  if (name.includes("..")) {
+    return "Name must not contain consecutive dots.";
   }
   return null;
 };