diff --git a/silkaj/commands.py b/silkaj/commands.py
index d65a124d6481657809f0514968559881f00a9810..adad2ec56e760fc0c3a2338315eb786c691d0927 100644
--- a/silkaj/commands.py
+++ b/silkaj/commands.py
@@ -17,6 +17,7 @@ from collections import OrderedDict
 from operator import itemgetter
 from os import system
 from typing import Dict, List, Tuple
+from urllib.error import HTTPError
 
 import jsonschema
 from click import IntRange, argument, command, option
@@ -151,14 +152,17 @@ def list_blocks(number: int, detailed: bool) -> None:
         issuers.append(issuer)
     for pubkey in issuers_dict.keys():
         issuer = issuers_dict[pubkey]
-        idty = identity_of(issuer["pubkey"])
+        try:
+            idty = identity_of(issuer["pubkey"])
+        except HTTPError:
+            idty = None
         for issuer2 in issuers:
             if (
                 issuer2.get("pubkey") is not None
                 and issuer.get("pubkey") is not None
                 and issuer2["pubkey"] == issuer["pubkey"]
             ):
-                issuer2["uid"] = idty["uid"]
+                issuer2["uid"] = idty["uid"] if idty else None
                 issuer2.pop("pubkey")
     header = (
         f"Last {number} blocks from n°{current_nbr - number + 1} to n°{current_nbr}"
diff --git a/silkaj/wot_tools.py b/silkaj/wot_tools.py
index f92c81b58133cd1a3a3328ab68fe3c972e106587..dc6f286a5df6917c0bc1cdfea348690970f6824b 100644
--- a/silkaj/wot_tools.py
+++ b/silkaj/wot_tools.py
@@ -14,6 +14,7 @@
 # along with Silkaj. If not, see <https://www.gnu.org/licenses/>.
 
 from typing import Dict, List, Optional
+from urllib.error import HTTPError
 
 from duniterpy.api.bma import wot
 
@@ -27,10 +28,7 @@ def identity_of(pubkey_uid: str) -> Dict:
     Able to know if an identity is member or not
     """
     client = client_instance()
-    try:
-        return client(wot.identity_of, pubkey_uid)
-    except ValueError:
-        pass
+    return client(wot.identity_of, pubkey_uid)
 
 
 def is_member(pubkey_uid: str) -> Optional[Dict]:
@@ -40,7 +38,7 @@ def is_member(pubkey_uid: str) -> Optional[Dict]:
     """
     try:
         return identity_of(pubkey_uid)
-    except Exception:
+    except HTTPError:
         return None
 
 
@@ -67,6 +65,6 @@ def identities_from_pubkeys(pubkeys: List[str], uids: bool) -> List:
     for pubkey in uniq_pubkeys:
         try:
             identities.append(identity_of(pubkey))
-        except Exception:
+        except HTTPError:
             pass
     return identities