feat(ipintelligence): add canonical RDAP CIDR coverage and derive CIDRs from IPv4 start/end ranges

readme.md

@@ -77,6 +77,7 @@ console.log(intel);
 //   registrantOrg: 'Google LLC',
 //   registrantCountry: 'United States',
 //   networkRange: '8.8.8.0/24',
+//   networkCidrs: ['8.8.8.0/24'],
 //   abuseContact: null,
 //   country: null,
 //   countryCode: 'US',
@@ -109,7 +110,8 @@ interface IIpIntelligenceResult {
   // Registration (RDAP)
   registrantOrg: string | null;
   registrantCountry: string | null;
-  networkRange: string | null;       // CIDR or range
+  networkRange: string | null;       // primary CIDR, or legacy start-end range when multiple CIDRs are needed
+  networkCidrs: string[] | null;     // canonical CIDR coverage for the RDAP network when available
   abuseContact: string | null;       // abuse email from RDAP
 
   // Geolocation (MaxMind GeoLite2)