diff --git a/api.py b/api.py
index 32c478304f5a5a65bdefb6bf2810b8c1cb06e6c8..1425fec76333ac8c85e422ad7aee8e302cdf83a4 100755
--- a/api.py
+++ b/api.py
@@ -21,7 +21,7 @@ def buildEmailAddress(listContacts):
     hrefList = []
 
     for email in listCtcs:
-       hrefList.append("<a href='%s'>%s</a>" % (email,email.replace('mailto:', '')))
+       hrefList.append(f"<a href='{email}'>{email.replace('mailto:', '')}</a>")
  
     return hrefList
 
@@ -34,7 +34,7 @@ def existsInFile(file_path, value, research_item, eccsDataTable, date):
         if (eccsDataTable):
            return ''
         else:
-           return jsonify(error='FileNotFound: ECCS2 script has not been executed on %s yet' % date)
+           return jsonify(error=f'FileNotFound: ECCS2 script has not been executed on {date} yet')
 
     for line in lines:
         aux = json.loads(line)
@@ -70,19 +70,20 @@ class Test(Resource):
 class EccsResults(Resource):
     def get(self):
 
-       file_path = "%s/eccs2_%s.log" % (ECCS2OUTPUTDIR,DAY)
+       file_path = f"{ECCS2OUTPUTDIR}/eccs2_{DAY}.log"
        date = DAY
        status = None
        idp = None
        reg_auth = None
        eccsDataTable = False
        simple = False
+       check_result = None
 
        if 'eccsdt' in request.args:
           eccsDataTable = True
        if 'date' in request.args:
           date = request.args['date']
-          file_path = "%s/eccs2_%s.log" % (ECCS2OUTPUTDIR,date)
+          file_path = f"{ECCS2OUTPUTDIR}/eccs2_{date}.log"
        if 'status' in request.args:
           status = request.args['status'].upper()
           if (status not in ['OK','DISABLED','ERROR']):
@@ -90,14 +91,18 @@ class EccsResults(Resource):
        if 'idp' in request.args:
           idp = request.args['idp']
           if (not existsInFile(file_path, idp, "entityID", eccsDataTable, date)):
-             return jsonify(error="Identity Provider not found with the entityID: %s" % idp)
+             return jsonify(error=f"Identity Provider not found with the entityID: {idp}")
        if 'reg_auth' in request.args:
           reg_auth = request.args['reg_auth']
           if (not existsInFile(file_path, reg_auth, "registrationAuthority", eccsDataTable, date)):
-             return jsonify(error="Identity Providers not found with the Registration Authority: %s" % reg_auth)
+             return jsonify(error=f"Identity Providers not found with the Registration Authority: {reg_auth}")
        if 'format' in request.args:
           if 'simple' == request.args['format']:
              simple = True
+       if 'check_result' in request.args:
+          check_result = request.args['check_result']
+          if (check_result not in ['OK','Timeout','Invalid-Form','Connection-Error','No-eduGAIN-Metadata','SSL-Error','DISABLED']):
+              return jsonify(error="Incorrect check_result value provided. It can be 'OK','Timeout','Invalid-Form','Connection-Error','No-eduGAIN-Metadata','SSL-Error' ok 'DISABLED'")
 
        lines = []
        results = []
@@ -109,7 +114,7 @@ class EccsResults(Resource):
            if (eccsDataTable):
               return ''
            else:
-              return jsonify(error='FileNotFound: ECCS2 script has not been executed on %s' % date)
+              return jsonify(error=f'FileNotFound: ECCS2 script has not been executed on {date}')
 
        for line in lines:
           # Strip the line feed and carriage return characters
@@ -163,9 +168,17 @@ class EccsResults(Resource):
                     results.append(auxSimple)
                  else:
                     results.append(aux)
+          elif (check_result):
+              if (check_result == aux['sp1']['checkResult'] or check_result == aux['sp2']['checkResult']):
+                 if (simple):              
+                    auxSimple = getSimpleDict(aux)
+                    results.append(auxSimple)
+                 else:
+                    results.append(aux)
           elif (simple):
               auxSimple = getSimpleDict(aux)
               results.append(auxSimple)
+
           else:
              results.append(aux)
 
@@ -178,14 +191,14 @@ class FedStats(Resource):
        list_feds = get_list_feds(ECCS2LISTFEDSURL, ECCS2LISTFEDSFILE)
        regAuthDict = get_reg_auth_dict(list_feds)
 
-       file_path = "%s/eccs2_%s.log" % (ECCS2OUTPUTDIR,DAY)
+       file_path = f"{ECCS2OUTPUTDIR}/eccs2_{DAY}.log"
        date = DAY
        reg_auth = None
        eccsDataTable = False
 
        if ('date' in request.args):
           date = request.args['date']
-          file_path = "%s/eccs2_%s.log" % (ECCS2OUTPUTDIR,date)
+          file_path = f"{ECCS2OUTPUTDIR}/eccs2_{date}.log"
        if ('reg_auth' in request.args):
           reg_auth = request.args['reg_auth']
           if (not existsInFile(file_path, reg_auth, "registrationAuthority", eccsDataTable, date)):
@@ -201,7 +214,7 @@ class FedStats(Resource):
            if (eccsDataTable):
               return ''
            else:
-              return jsonify(error='FileNotFound: ECCS2 script has not been executed on %s yet' % date)
+              return jsonify(error=f'FileNotFound: ECCS2 script has not been executed on {date} yet')
 
        if (reg_auth):
           resultDict = {'date': date, 'registrationAuthority': reg_auth, 'OK': 0, 'ERROR': 0, 'DISABLED': 0}
diff --git a/web/eccs2.js b/web/eccs2.js
index 76e6e784b8826bf313fff9ad0b1dc46675e661a2..7c9a821a48675daa68a728b350d81681e4cc4e76 100644
--- a/web/eccs2.js
+++ b/web/eccs2.js
@@ -147,6 +147,7 @@ function SHA1(msg) {
 // date (date time of the check)
 // reg_auth (the IdP RegistrationAuthority)
 // status (the ECCS2 IdP Status)
+// check_result (the ECCS2 check result)
 if (date) {
    url = url.concat("&date=" + date);
 }
@@ -159,7 +160,9 @@ if (idp) {
 if (status) {
    url = url.concat("&status=" + status);
 }
-
+if (check_result) {
+   url = url.concat("&check_result=" + check_result);
+}
 
 function getPastResults() {
    var checkDate = $.datepicker.formatDate("yy-mm-dd", $('#datepicker').datepicker().datepicker('getDate'));
diff --git a/web/index.php b/web/index.php
index dcb97641b2eed547da2ca9b6cd433700379b3550..16440964be418ef8949deca2d952953540d7b019 100644
--- a/web/index.php
+++ b/web/index.php
@@ -17,6 +17,7 @@ $data['idp'] = htmlspecialchars($_GET["idp"]);
 $data['reg_auth'] = htmlspecialchars($_GET["reg_auth"]);
 $data['date'] = (htmlspecialchars($_GET["date"]) ? htmlspecialchars($_GET["date"] : $lastDate);
 $data['status'] = htmlspecialchars($_GET["status"]);
+$data['check_result'] = htmlspecialchars($_GET["check_result"]);
 ?>
 
 <!DOCTYPE html>
@@ -83,6 +84,7 @@ $data['status'] = htmlspecialchars($_GET["status"]);
        var reg_auth = "<?php echo $data['reg_auth'] ?>";
        var idp = "<?php echo $data['idp'] ?>";
        var status = "<?php echo $data['status'] ?>";
+       var check_result = "<?php echo $data['check_result'] ?>";
     </script>
     <script type="text/javascript" src="eccs2.js" /></script>
   </body>