diff --git a/whois.py b/whois.py
new file mode 100644
index 0000000..db20cfc
--- /dev/null
+++ b/whois.py
@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+import datetime
+from pathlib import Path
+from subprocess import check_output
+
+import requests
+from dateutil.parser import isoparse
+
+DOMAIN = 'google.com'
+TG_TOKEN = 'YOUR TOKEN HERE'
+# TG_CHAT_ID = 879777248
+TG_CHAT_ID = -1
+
+
+def log_tg(msg: str):
+    print(msg)
+    requests.get(f"https://api.telegram.org/{TG_TOKEN}/sendMessage",
+                 params={'chat_id': TG_CHAT_ID, 'text': msg, 'disable_web_page_preview': True})
+
+
+def check(domain: str):
+    date = datetime.datetime.now().strftime('%Y-%m-%d %H:%M')
+    p = Path(f'data/domain-{domain}-whois.txt')
+    p.parent.mkdir(parents=True, exist_ok=True)
+    new = check_output(['whois', domain]).decode('utf-8')
+
+    # Remove database update line
+    lines = []
+    db_update_date = 'Not found'
+    for i, line in enumerate(new.split('\n')):
+        if line.startswith('>>> Last update of Whois database:'):
+            print(line)
+            db_update_date = line.replace('>>> Last update of Whois database: ', '').replace(' <<<', '')
+            db_update_date = isoparse(db_update_date).astimezone().strftime('%Y-%m-%d %H:%M')
+        else:
+            lines.append(line)
+
+    new = '\n'.join(lines)
+
+    def report(msg: str, out: bool):
+        log_tg(f'Check on {date} (DB {db_update_date}): \n> {msg}')
+        if out:
+            log_tg('\n'.join(new.split('\n')[:20]))
+
+    if p.is_file():
+        old = p.read_text('utf-8')
+        if old == new:
+            report(f'No change detected.', False)
+        else:
+            report('Change detected.', True)
+    else:
+        report("The domain haven't been checked before.", True)
+
+    p.write_text(new)
+
+
+if __name__ == '__main__':
+    check(DOMAIN)