diff --git a/bgp_prefix.py b/bgp_prefix.py
new file mode 100644
index 0000000..8a146e6
--- /dev/null
+++ b/bgp_prefix.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+ 
+import sys
+import re
+import urllib.request
+import urllib.parse
+ 
+ 
+def fetch_prefixes(keyword: str) -> list[str]:
+    url = (
+        "https://bgp.he.net/search?"
+        + urllib.parse.urlencode({"search[search]": keyword, "commit": "Search"})
+    )
+ 
+    req = urllib.request.Request(
+        url,
+        headers={"User-Agent": "Mozilla/5.0 (compatible; bgp-search/1.0)"},
+    )
+ 
+    with urllib.request.urlopen(req, timeout=15) as resp:
+        html = resp.read().decode("utf-8", errors="replace")
+ 
+    prefixes = re.findall(
+        r'href="/net/([^"]+)"',
+        html,
+    )
+ 
+    return sorted(set(prefixes))
+ 
+ 
+def main():
+    if len(sys.argv) < 2:
+        print("Use: python3 bgp_search.py <key_word>", file=sys.stderr)
+        print("For example: python3 bgp_search.py ozon", file=sys.stderr)
+        sys.exit(1)
+ 
+    keyword = sys.argv[1]
+    prefixes = fetch_prefixes(keyword)
+ 
+    if not prefixes:
+        print(f"Network for '{keyword}' not found.", file=sys.stderr)
+        sys.exit(0)
+ 
+    for prefix in prefixes:
+        print(prefix)
+ 
+ 
+if __name__ == "__main__":
+    main()
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