diff --git a/pyproject.toml b/pyproject.toml
index b52324f..40a995e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,6 +33,7 @@ classifiers = [
 [tool.poetry.dependencies]
 python = "^3.7"
 pytest = ">=3.6.3"
+ipwhois = ">= 1.0.0"
 
 [tool.poetry.dev-dependencies]
 coverage = "^7.0"
diff --git a/pytest_socket.py b/pytest_socket.py
index cef3eaa..803c835 100644
--- a/pytest_socket.py
+++ b/pytest_socket.py
@@ -1,5 +1,7 @@
 import ipaddress
 import socket
+from ipwhois import IPWhois
+from ipwhois.exceptions import HTTPLookupError, IPDefinedError
 
 import pytest
 
@@ -16,9 +18,15 @@ class SocketConnectBlockedError(RuntimeError):
     def __init__(self, allowed, host, *_args, **_kwargs):
         if allowed:
             allowed = ",".join(allowed)
+        try:
+            ip_whois = IPWhois(host).lookup_rdap(depth=1)
+            host_description = ip_whois.get("asn_description", None)
+        except (HTTPLookupError, IPDefinedError):
+            host_description = None
+        host_text = f"{host} ({host_description})" if host_description else host
         super().__init__(
             "A test tried to use socket.socket.connect() "
-            f'with host "{host}" (allowed: "{allowed}").'
+            f'with host "{host_text}" (allowed: "{allowed}").'
         )