{"id":17881955,"url":"https://github.com/amine7536/reverse-scan","last_synced_at":"2026-03-08T01:02:17.810Z","repository":{"id":73941109,"uuid":"95888828","full_name":"amine7536/reverse-scan","owner":"amine7536","description":"Perform reverse DNS lookups on huge network 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unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["dispatch","dns","golang","huge-network-ranges","reverse-dns-lookups","workers"],"created_at":"2024-10-28T12:46:21.048Z","updated_at":"2026-03-08T01:02:17.766Z","avatar_url":"https://github.com/amine7536.png","language":"Go","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Reverse-Scan\n\nPerform reverse DNS lookups on huge network ranges\n\nThis utility uses the \"Dispatcher/Workers\" pattern discribed here :\n- https://gobyexample.com/worker-pools\n- https://nesv.github.io/golang/2014/02/25/worker-queues-in-go.html\n- http://marcio.io/2015/07/handling-1-million-requests-per-minute-with-golang/\n\n# Installation\n\n## Download Binary\n\nDownload the latest binary from the [releases page](https://github.com/amine7536/reverse-scan/releases):\n\n```bash\n# Example for Linux amd64\nwget https://github.com/amine7536/reverse-scan/releases/latest/download/reverse-scan_Linux_x86_64.tar.gz\ntar xzf reverse-scan_Linux_x86_64.tar.gz\nchmod +x reverse-scan\n```\n\n## Docker\n\n```bash\ndocker pull amine7536/reverse-scan:latest\ndocker run --rm amine7536/reverse-scan:latest --help\n```\n\n## Go Install\n\n```bash\ngo install github.com/amine7536/reverse-scan@latest\n```\n\n# Getting Started\n\nUsage :\n\n```bash\n./reverse-scan --help\nReverse Scan\n\nUsage:\n  reverse-scan [flags]\n  reverse-scan [command]\n\nAvailable Commands:\n  help        Help about any command\n  version     Print the version number\n\nFlags:\n  -c, --cidr string     CIDR notation (e.g., 192.168.1.0/24)\n  -e, --end string      ip range end\n  -h, --help            help for reverse-scan\n  -o, --output string   csv output file\n  -s, --start string    ip range start\n  -w, --workers int     number of workers (default 8)\n\nUse \"reverse-scan [command] --help\" for more information about a command\n```\n\nRun with IP range:\n\n```bash\n./reverse-scan --start 37.160.0.0 --end 37.175.255.255 --output /tmp/out.csv -w 1024\n2017/06/30 15:01:29 Resolving from 37.160.0.0 to 37.175.255.255\n2017/06/30 15:01:29 Calculated CIDR is 37.160.0.0/12\n2017/06/30 15:01:29 Number of IPs to scan: 1048576\n2017/06/30 15:01:29 Starting 1024 Workers\n   9s [======================================================\u003e-------------]  81%\n```\n\nOr run with CIDR notation:\n\n```bash\n./reverse-scan --cidr 127.0.0.1/24 --output /tmp/out.csv -w 1024\n2017/06/30 15:01:29 Resolving from 127.0.0.0 to 127.0.0.255\n2017/06/30 15:01:29 Calculated CIDR is 127.0.0.0/24\n2017/06/30 15:01:29 Number of IPs to scan: 256\n2017/06/30 15:01:29 Starting 1024 Workers\n   1s [===========================================================\u003e------]  91%\n```\n\nYou can specify either:\n- IP range using `--start` and `--end` flags, or\n- CIDR notation using `--cidr` flag\n\nYou specify the number of workers with the option `-w`, by default the utility starts with 8 workers.\nYou must also specify an output CSV file.\n\n# Development\n\nFor information about the release process and how to create new releases, see [RELEASE.md](RELEASE.md).\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Famine7536%2Freverse-scan","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Famine7536%2Freverse-scan","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Famine7536%2Freverse-scan/lists"}