Getting Error: connect ECONNREFUSED 167.172.99.5:1129 in postman

I am trying to call API using postman but i am getting below error,

GET http://tools.do7a.io:1129/api/instance
Error: connect ECONNREFUSED 167.172.99.5:1129
:arrow_forward:Request Headers
User-Agent: PostmanRuntime/7.28.0
Accept: /
Postman-Token: f0e1ab2e-53b5-4a86-aaa3-b745f571a046
Host: tools.do7a.io:1129
Accept-Encoding: gzip, deflate, br

Can anyone please help me with this.