Henky!!@charims Depends on where you will implement it. Reverse DNS is commonly offered on VPS instances, however on residential internet its usually not available. With a good VPS host it will be offered trough the control panel and updated almost instantly.
Jonkman Microblog is a social network, courtesy of SOBAC Microcomputer Services. It runs on GNU social, version 1.2.0-beta5, available under the GNU Affero General Public License.
All Jonkman Microblog content and data are available under the Creative Commons Attribution 3.0 license.