import type { isFQDNRes } from "./typings.d";
export declare const isIPv4: (str: string) => boolean;
export declare const isIPv6: (str: string) => boolean;
export declare const isIP: (str: string) => 0 | 4 | 6;
export declare const isSameIPV4Segment: (startIP: string, endIP: string, lang?: any) => isFQDNRes;
export declare const isLoopback: (host: string) => boolean;