diff --git a/routes/ping.js b/routes/ping.js
index 5ccce0b..d98000c 100644
--- a/routes/ping.js
+++ b/routes/ping.js
@@ -1,5 +1,6 @@
 let express = require("express");
 let ipaddr = require("ipaddr.js");
+let moment = require("moment");
 let db = require("../libs/Database").instance();
 let router = express.Router();
 
@@ -35,9 +36,9 @@ router.get("/:fqdn", (req, res) => {
 		if (!d) return res.status(404).send("Unknown FQDN");
 		res.send([
 		    d.ipv4 ? d.ipv4 : "0.0.0.0",
-		    d.ipv4LastPing,
+		    moment(d.ipv4LastPing).toISOString(),
 		    d.ipv6 ? d.ipv6 : "::",
-		    d.ipv6LastPing,
+		    moment(d.ipv6LastPing).toISOString(),
 		].reduce((a, b) => a + "\n" + b));
 	});
 });