const locationName = 'myLocation'
    // Create a CIDR collection
    const cidrCollection = new route53.CfnCidrCollection(this, 'MyCidrCollection', {
      name: 'MyCidrCollection',
      locations: [
        {
          cidrList: ['192.168.1.0/24', '192.168.2.0/24'],
          locationName,
        }
      ]
    });

    // Create a RecordSet that uses the CIDR collection
    new route53.CfnRecordSet(this, 'MyRecordSet', {
      // ... other properties ...
      // Reference the CIDR collection
      cidrRoutingConfig: {
        collectionId: cidrCollection.ref,
        locationName,
      },
    });

interface CidrRoutingConfig {
  collectionName?: string;
  locations: Location[];
  // Define only if sharing the same collection with other RecordSets
  collection?: CfnCidrCollection:
}

interface Location {
  cidrList: string[];
  locationName?: string;
}

const record1 = new route53.RecordSet(this, 'IPBasedRoutingRecordSet1', {
  // ... other properties ...
  cidrRoutingConfig: {
    collectionName: 'MyCollection', // optional
    locations: [
      {
        locationName: 'Location1', // optional
        cidrList: ['192.168.1.0/24', '192.168.2.0/24'],
      },
    ],
  },
});

// By adding Location2 to the CfnCidrCollection created in record1, the same CidrCollection can be shared.
const record2 = new route53.RecordSet(this, 'IPBasedRoutingRecordSet2', {
  // ... other properties ...
  cidrRoutingConfig: {
    collection: record1.cidrCollection,
    locations: [
      {
        locationName: 'Location2', // optional
        cidrList: ['192.168.3.0/24', '192.168.4.0/24'],
      },
    ],
  },
});