diff --git a/src/fr/devinsy/statoolinfos/metrics/http/HttpAccessLog.java b/src/fr/devinsy/statoolinfos/metrics/http/HttpAccessLog.java
index dafc30b..82f1bca 100644
--- a/src/fr/devinsy/statoolinfos/metrics/http/HttpAccessLog.java
+++ b/src/fr/devinsy/statoolinfos/metrics/http/HttpAccessLog.java
@@ -21,7 +21,6 @@ package fr.devinsy.statoolinfos.metrics.http;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.Locale;
-import java.util.regex.Pattern;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -36,9 +35,6 @@ public class HttpAccessLog
 {
     private static Logger logger = LoggerFactory.getLogger(HttpAccessLog.class);
 
-    public static final Pattern IPV4_PATTERN = Pattern.compile("\\d{0,3}\\.\\d{0,3}\\.\\d{0,3}\\.\\d{0,3}");
-    public static final Pattern IPV6_PATTERN = Pattern.compile("([0-9a-f]{1,4}:{1,2}){4,7}([0-9a-f]){1,4}", Pattern.CASE_INSENSITIVE);
-
     private String ip;
     private String remoteUser;
     private LocalDateTime time;
diff --git a/src/fr/devinsy/statoolinfos/util/IpUtils.java b/src/fr/devinsy/statoolinfos/util/IpUtils.java
new file mode 100644
index 0000000..36fa32f
--- /dev/null
+++ b/src/fr/devinsy/statoolinfos/util/IpUtils.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2021 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of StatoolInfos, simple service statistics tool.
+ * 
+ * StatoolInfos is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * StatoolInfos is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with StatoolInfos.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.statoolinfos.util;
+
+import java.util.regex.Pattern;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * The Class IpUtils.
+ */
+public class IpUtils
+{
+    private static Logger logger = LoggerFactory.getLogger(IpUtils.class);
+
+    public static final Pattern IPV4_PATTERN = Pattern.compile("\\d{0,3}\\.\\d{0,3}\\.\\d{0,3}\\.\\d{0,3}");
+    public static final Pattern IPV6_PATTERN = Pattern.compile("([0-9a-f]{1,4}:{1,2}){4,7}([0-9a-f]){1,4}", Pattern.CASE_INSENSITIVE);
+
+    private IpUtils()
+    {
+    }
+
+    /**
+     * Checks if is ipv 4.
+     *
+     * @param input
+     *            the input
+     * @return true, if is ipv 4
+     */
+    public static boolean isIpv4(final String input)
+    {
+        boolean result;
+
+        result = IPV4_PATTERN.matcher(input).matches();
+
+        //
+        return result;
+    }
+
+    /**
+     * Checks if is ipv 6.
+     *
+     * @param input
+     *            the input
+     * @return true, if is ipv 6
+     */
+    public static boolean isIpv6(final String input)
+    {
+        boolean result;
+
+        result = IPV6_PATTERN.matcher(input).matches();
+
+        //
+        return result;
+    }
+}
\ No newline at end of file