diff --git a/frontend/src/IPRangesManager.jsx b/frontend/src/IPRangesManager.jsx
index 2f80ca8..a3c8084 100644
--- a/frontend/src/IPRangesManager.jsx
+++ b/frontend/src/IPRangesManager.jsx
@@ -228,7 +228,7 @@ function IPRangesManager() {
   const [analysisResultsOpen, setAnalysisResultsOpen] = useState(false);
   const [analysisPreview, setAnalysisPreview] = useState(null);
   const [overwriteConfirmOpen, setOverwriteConfirmOpen] = useState(false);
-  const [analyzeFilters, setAnalyzeFilters] = useState({ community: '', minMask: 0, maxMask: 32, type: 'any' });
+  const [analyzeFilters, setAnalyzeFilters] = useState({ community: '', minMask: 0, maxMask: 32, type: 'any', supernet16: false });
 
   const handlePreviewDiff = () => {
     const valid = items.filter(i => isValidCidr(i.ipRange) && isValidCommunity(i.community))
@@ -437,6 +437,7 @@ function IPRangesManager() {
     parts.push(`Маска: /${analyzeFilters.minMask}..../${analyzeFilters.maxMask}`);
     const typeLabel = analyzeFilters.type === 'any' ? 'любой' : (analyzeFilters.type === 'private' ? 'только приватные' : (analyzeFilters.type === 'public' ? 'только публичные' : 'только CGNAT'));
     parts.push(`Тип: ${typeLabel}`);
+    parts.push(`Агрегировать >2 префиксов в одном /16 до /16: ${analyzeFilters.supernet16 ? 'да' : 'нет'}`);
     return parts.join('\n');
   };
 
@@ -522,6 +523,28 @@ function IPRangesManager() {
     return out;
   };
 
+  // Агрессивная агрегация: если в одном /16 > 2 префиксов — свернуть в /16
+  const get16BaseCidr = (cidr) => {
+    const ip = String(cidr).split('/')[0];
+    const ipNum = ipToInt(ip);
+    const start = ipNum & (~0n << 16n);
+    return `${intToIp(start)}/16`;
+  };
+
+  const applySupernet16 = (cidrs) => {
+    const buckets = new Map();
+    for (const c of cidrs) {
+      const base16 = get16BaseCidr(c);
+      if (!buckets.has(base16)) buckets.set(base16, []);
+      buckets.get(base16).push(c);
+    }
+    const out = [];
+    for (const [base16, list] of buckets) {
+      if (list.length > 2) out.push(base16); else out.push(...list);
+    }
+    return Array.from(new Set(out));
+  };
+
   const runAnalysis = () => {
     const community = String(analyzeFilters.community || '').trim();
     if (!community) { window.notify?.error?.('Выберите community'); return; }
@@ -539,7 +562,10 @@ function IPRangesManager() {
     const unchanged = allForCommunity.filter(i => !filtered.includes(i));
 
     const beforeCidrs = filtered.map(i => i.ipRange);
-    const afterCidrs = summarizeCidrs(beforeCidrs);
+    let afterCidrs = summarizeCidrs(beforeCidrs);
+    if (analyzeFilters.supernet16) {
+      afterCidrs = applySupernet16(afterCidrs);
+    }
     const processedBefore = beforeCidrs.length;
     const processedAfter = afterCidrs.length;
     const totalAfter = processedAfter + unchanged.length;
@@ -1018,6 +1044,14 @@ function IPRangesManager() {
                       </div>
                       <div className="form-text">Определение типа по первому IP в CIDR.</div>
                     </div>
+                    <div className="mb-3">
+                      <label className="form-label">Агрессивная агрегация</label>
+                      <label className="form-check">
+                        <input className="form-check-input" type="checkbox" checked={analyzeFilters.supernet16} onChange={e => setAnalyzeFilters(f => ({ ...f, supernet16: e.target.checked }))} />
+                        <span className="form-check-label">Если в одном /16 более 2 префиксов — свернуть в /16</span>
+                      </label>
+                      <div className="form-text">Например: 157.240.12.0/23, 157.240.15.0/24, 157.240.16.0/23 → 157.240.0.0/16</div>
+                    </div>
                   </div>
                 </div>
               </div>