diff --git a/lib/provider.coffee b/lib/provider.coffee
index ff4ca9d..34a9cba 100644
--- a/lib/provider.coffee
+++ b/lib/provider.coffee
@@ -118,7 +118,7 @@ module.exports =
     displayText: attribute
     type: 'attribute'
     description: description ? "Global #{attribute} attribute"
-    descriptionMoreURL: if description then @getGlobalAttributeDocsURL(attribute) else null
+    descriptionMoreURL: @getGlobalAttributeDocsURL(attribute)
 
   getAttributeValueCompletions: ({prefix, editor, bufferPosition}) ->
     completions = []
@@ -181,7 +181,15 @@ module.exports =
     "#{@getTagDocsURL(tag)}#attr-#{attribute}"
 
   getGlobalAttributeDocsURL: (attribute) ->
-    "https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/#{attribute}"
+    if attribute.startsWith('on')
+      "https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/#{attribute}"
+    else if attribute.startsWith('aria-')
+      # As of September 2017, MDN does not have pages for ARIA attributes
+      "https://www.w3.org/TR/wai-aria-1.1/##{attribute}"
+    else if attribute is 'role'
+      "https://www.w3.org/TR/wai-aria-1.1/#usage_intro"
+    else
+      "https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/#{attribute}"
 
 firstCharsEqual = (str1, str2) ->
   str1[0].toLowerCase() is str2[0].toLowerCase()
diff --git a/spec/provider-spec.coffee b/spec/provider-spec.coffee
index 1637c6b..db5a0f0 100644
--- a/spec/provider-spec.coffee
+++ b/spec/provider-spec.coffee
@@ -12,7 +12,21 @@ describe "HTML autocompletions", ->
       bufferPosition: bufferPosition
       scopeDescriptor: cursor.getScopeDescriptor()
       prefix: prefix
-    provider.getSuggestions(request)
+
+    filterByPrefix(provider.getSuggestions(request), prefix)
+
+
+  filterByPrefix = (rawSuggestionsList, prefix) ->
+    if prefix.length < 3
+      rawSuggestionsList
+    else
+      filteredSuggestionsList = []
+      for suggestion in rawSuggestionsList
+        attribute = suggestion.text or suggestion.displayText
+        if attribute.indexOf(prefix) isnt -1
+          filteredSuggestionsList.push suggestion
+
+      filteredSuggestionsList
 
   beforeEach ->
     waitsForPromise -> atom.packages.activatePackage('autocomplete-html')
@@ -294,7 +308,7 @@ describe "HTML autocompletions", ->
     expect(-> completions = getCompletions()).not.toThrow()
     expect(completions[0].displayText).toBe 'onafterprint'
 
-  it "does not provide a descriptionMoreURL if the attribute does not have a unique description", ->
+  it "provides a descriptionMoreURL if the attribute does not have a unique description but starts with on*", ->
     editor.setText('<input on')
     editor.setCursorBufferPosition([0, 9])
 
@@ -302,7 +316,27 @@ describe "HTML autocompletions", ->
 
     expect(completions[0].displayText).toBe 'onabort'
     expect(completions[0].description).toBe 'Global onabort attribute'
-    expect(completions[0].descriptionMoreURL).toBeNull()
+    expect(completions[0].descriptionMoreURL.endsWith('/Web/API/GlobalEventHandlers/onabort')).toBe true
+
+  it "provides a descriptionMoreURL if the attribute is role", ->
+    editor.setText('<div aria')
+    editor.setCursorBufferPosition([0, 9])
+
+    completions = getCompletions()
+
+    expect(completions[0].displayText).toBe 'aria-activedescendant'
+    expect(completions[0].description).toBe 'Global aria-activedescendant attribute'
+    expect(completions[0].descriptionMoreURL.endsWith('/TR/wai-aria-1.1/#aria-activedescendant')).toBe true
+
+  it "provides a descriptionMoreURL if the attribute is role", ->
+    editor.setText('<div ro')
+    editor.setCursorBufferPosition([0, 7])
+
+    completions = getCompletions()
+
+    expect(completions[0].displayText).toBe 'role'
+    expect(completions[0].description).toBe 'Global role attribute'
+    expect(completions[0].descriptionMoreURL.endsWith('/TR/wai-aria-1.1/#usage_intro')).toBe true
 
   it "autocompletes attribute values without a prefix", ->
     editor.setText('<marquee behavior=""')