import { SubdomainData } from '../types/index.js';
export declare class SubdomainService {
    private commonSubdomains;
    discoverSubdomains(domain: string): Promise<SubdomainData>;
    private certificateTransparencyLookup;
    private commonSubdomainCheck;
    private checkSubdomain;
    private checkWildcardDNS;
    private isValidSubdomain;
}
//# sourceMappingURL=subdomain.d.ts.map