c-ares is a C library for asynchronous DNS requests (including name
C89 compatibility, MIT licensed, builds for and
runs on POSIX, Windows, Netware, Android and many more operating systems.
c-ares 1.17.2 (10-aug-2021)
You can also download old packages
Discussions around c-ares, its use and its development, are held on the c-ares mailing
list. Please, do not mail volunteers privately about c-ares. Mailing list archive
Security vulnerabilities are treated according to our security procedure, please email c-ares-security at
haxx.se if you suspect one. Previous security
Browse the git repository on github.
Check out from git like this:
git clone https://github.com/c-ares/c-ares.git
Contributions have been made by these friendly
c-ares is being used by libcurl, UnreadlIRCd, BZFlag, Xymon,
Please let us know if you use it!