diff --git a/epicyon.py b/epicyon.py
index cb6b0637..0fae722f 100644
--- a/epicyon.py
+++ b/epicyon.py
@@ -16,6 +16,7 @@ from skills import setSkillLevel
 from roles import setRole
 from webfinger import webfingerHandle
 from posts import getPublicPostDomains
+from posts import getPublicPostDomainsBlocked
 from posts import sendBlockViaServer
 from posts import sendUndoBlockViaServer
 from posts import createPublicPost
@@ -157,6 +158,10 @@ parser.add_argument('--postDomains', dest='postDomains', type=str,
                     default=None,
                     help='Show domains referenced in public '
                     'posts for the given handle')
+parser.add_argument('--postDomainsBlocked', dest='postDomainsBlocked',
+                    type=str, default=None,
+                    help='Show blocked domains referenced in public '
+                    'posts for the given handle')
 parser.add_argument('--socnet', dest='socnet', type=str,
                     default=None,
                     help='Show dot diagram for social network '
@@ -475,6 +480,44 @@ if args.postDomains:
         print(postDomain)
     sys.exit()
 
+if args.postDomainsBlocked:
+    # Domains which were referenced in public posts by a
+    # given handle but which are globally blocked on this instance
+    if '@' not in args.postDomainsBlocked:
+        if '/users/' in args.postDomainsBlocked:
+            postsNickname = getNicknameFromActor(args.posts)
+            postsDomain, postsPort = getDomainFromActor(args.posts)
+            args.postDomainsBlocked = postsNickname + '@' + postsDomain
+            if postsPort:
+                if postsPort != 80 and postsPort != 443:
+                    args.postDomainsBlocked += ':' + str(postsPort)
+        else:
+            print('Syntax: --postDomainsBlocked nickname@domain')
+            sys.exit()
+    if not args.http:
+        args.port = 443
+    nickname = args.postDomainsBlocked.split('@')[0]
+    domain = args.postDomainsBlocked.split('@')[1]
+    proxyType = None
+    if args.tor or domain.endswith('.onion'):
+        proxyType = 'tor'
+        if domain.endswith('.onion'):
+            args.port = 80
+    elif args.i2p or domain.endswith('.i2p'):
+        proxyType = 'i2p'
+        if domain.endswith('.i2p'):
+            args.port = 80
+    elif args.gnunet:
+        proxyType = 'gnunet'
+    domainList = []
+    domainList = getPublicPostDomainsBlocked(baseDir, nickname, domain,
+                                             proxyType, args.port,
+                                             httpPrefix, debug,
+                                             __version__, domainList)
+    for postDomain in domainList:
+        print(postDomain)
+    sys.exit()
+
 if args.socnet:
     if ',' not in args.socnet:
         print('Syntax: '
diff --git a/posts.py b/posts.py
index 3a594a81..cee86d53 100644
--- a/posts.py
+++ b/posts.py
@@ -3288,6 +3288,42 @@ def getPublicPostDomains(baseDir: str, nickname: str, domain: str,
     return postDomains
 
 
+def getPublicPostDomainsBlocked(baseDir: str, nickname: str, domain: str,
+                                proxyType: str, port: int, httpPrefix: str,
+                                debug: bool, projectVersion: str,
+                                domainList=[]) -> []:
+    """ Returns a list of domains referenced within public posts which
+    are globally blocked on this instance
+    """
+    postDomains = \
+        getPublicPostDomains(baseDir, nickname, domain,
+                             proxyType, port, httpPrefix,
+                             debug, projectVersion,
+                             domainList)
+    if not postDomains:
+        return []
+
+    blockingFilename = baseDir + '/accounts/blocking.txt'
+    if not os.path.isfile(blockingFilename):
+        return []
+
+    # read the blocked domains as a single string
+    blockedStr = ''
+    with open(blockingFilename, 'r') as fp:
+        blockedStr = fp.read()
+
+    blockedDomains = []
+    for domainName in postDomains:
+        if '@' not in domainName:
+            continue
+        # get the domain after the @
+        domainName = domainName.split('@')[1].strip()
+        if domainName in blockedStr:
+            blockedDomains.append(domainName)
+
+    return blockedDomains
+
+
 def sendCapabilitiesUpdate(session, baseDir: str, httpPrefix: str,
                            nickname: str, domain: str, port: int,
                            followerUrl, updateCaps: [],