ipv4

ZMap is a fast single packet network scanner designed for Internet-wide network surveys.

🚩 自动更新域名解析到本机IP(支持dnspod,阿里DNS,CloudFlare,华为云,DNSCOM...)

Smart DNS proxy to watch Netflix

Network utility for sending / receiving TCP, UDP, SSL, HTTP

The BGP swiss army knife of networking

🌚 🌍 🌝 GeoIP 规则文件加强版，同时支持定制 V2Ray dat 格式路由规则文件 geoip.dat 和 MaxMind mmdb 格式文件 Country.mmdb。Enhanced edition of GeoIP files for V2Ray, Xray-core, Trojan-Go, Clash and Leaf, with replaced CN IPv4 CIDR available from ipip.net, appended CIDR lists and more.

🖖 Fast, modern, easy-to-use network scanner

🇨🇳免费IP地址数据库，已支持IPV4+IPV6 ，结构化输出为国家、省、市、县、运营商)，中文数据库，方便实用。

Enterprise Network Flow Collector (IPFIX, sFlow, Netflow)

Dynamic DNS service

goscan is a simple and efficient IPv4 network scanner that discovers all active devices on local subnet.

A network address manipulation library for Python

Fork of DDoS Deflate with fixes, improvements and new features.

Reliable UDP networking library

FAST command to manage a centralised wireguard VPN. Think wg-quick but quicker: key generation + address allocation.

Highly portable C system library: threads and synchronization primitives, sockets (TCP, UDP, SCTP), IPv4 and IPv6, IPC, hash functions (MD5, SHA-1, SHA-2, SHA-3, GOST), binary trees (RB, AVL) and more. Native code performance.

Retrieve and parse whois data for IPv4 and IPv6 addresses

💻 a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript

IPNetwork command line and C# library take care of complex network, IP, IPv4, IPv6, netmask, CIDR, subnet, subnetting, supernet, and supernetting calculation for .NET developers. It works with IPv4 as well as IPv6, is written in C#, has a light and clean API, and is fully unit-tested

Managed C# abstraction of GameNetworkingSockets library by Valve Software