Add AXFR database API

README.md

@@ -140,6 +140,7 @@ A collective list of JSON APIs for use in web development.
 | API | Description | OAuth |Link |
 |---|---|---|---|
 | UK Police | UK Police data | No | [Go!](https://data.police.uk/docs/) |
+| AXFR Database | AXFR public database API | No | [Go'](http://api.axfrcheck.com) |
 
 ### Science