Get all test probes failing with 503

There seems to be an issue with one of the Apigee API’s, get all test probes, that is failing with a 503- Service Temporarily unavailable.

Request:
GET https://api.test.apigee.com/v1/organizations/{epsilon}/probes

Response:

HTTP/1.1 503 Service Unavailable
Connection:
keep-alive
Content-Length:
139
Content-Type:
application/json
Date:
Fri, 02 Sep 2016 18:39:09 GMT
Server:
Apigee Router
{
"fault": {
"faultstring": "The Service is temporarily unavailable",
"detail": {
"errorcode": "messaging.adaptors.http.flow.ServiceUnavailable"
}
}
}