diff --git a/check_mijn.host.sh b/check_mijn.host.sh
new file mode 100644
index 0000000..18460ce
--- /dev/null
+++ b/check_mijn.host.sh
@@ -0,0 +1,61 @@
+#!/bin/bash
+# Nagios Check - 2023 MIJN.HOST API CHECK EXPIRY DOMAIN
+# 20230614 v1.0 - Step (debian 11.x tested)
+
+#
+# API key is required, ask support@mijn.host for an API key.
+# WARNING: SCRIPT NEEDS TO BE TESTED IF MULTIPLE DOMAINS!
+#
+
+# Main Vars
+OK=0
+WARNING=1
+CRITICAL=2
+ERROR=4
+
+crit=30
+warn=60
+
+domain=$1
+apikey=$2
+
+# Check for curl & dateutils
+if ! [ -x "$(command -v curl)" ]; then
+  echo 'Error: curl is not installed.' >&2
+  exit $ERROR
+fi
+
+if ! [ -x "$(command -v dateutils.ddiff)" ]; then
+  echo 'Error: dateutils is not installed.' >&2
+  exit $ERROR
+fi
+
+if [ -z "$domain" ] || [ -z "$apikey" ]
+# $domain is required but is not used except for display in output.
+then
+        echo Usage: "$0 <domain> <apikey> (requires dateutils and curl)"
+        exit $ERROR
+fi
+
+# Check date today
+today=$(date "+%Y-%m-%d")
+
+# Run complete check for domain expiry
+expiredate=$(curl -s --location --request POST 'https://mijn.host/api/v1/domain/domains/' --header 'API-Key: '$apikey'' --header 'Content-Type: application/x-www-form-urlencoded' --header 'Accept: application/json' | jq -r '.data."domains" | .[] | .renewal_date')
+remainingdays=$(( ($(date --date="$expiredate UTC" +%s) - $(date --date="$today UTC" +%s) )/(60*60*24) ))
+output=$(dateutils.ddiff -f '%Y years, %m months, %d days' today "$(dateutils.dadd now $remainingdays)")
+
+if [ "$remainingdays" -lt "$crit" ]; 
+	then
+		echo "CRITICAL - Renew domain $1. It expires in: $output | Remaining(Days)=$remainingdays"
+		exit $CRITICAL
+	else 
+		if [ "$remainingdays" -lt "$warn" ];
+			then 
+				echo "WARNING - Renew domain $1. It expires in: $output | Remaining(Days)=$remainingdays"
+				exit $WARNING
+			else
+				echo "DOMAIN OK - Domain $1 expires in: $output | Remaining(Days)=$remainingdays"
+				exit $OK
+		fi
+fi