diff --git a/AsbCloudApp/Data/DatesRangeDto.cs b/AsbCloudApp/Data/DatesRangeDto.cs
new file mode 100644
index 00000000..8df4776b
--- /dev/null
+++ b/AsbCloudApp/Data/DatesRangeDto.cs
@@ -0,0 +1,10 @@
+using System;
+
+namespace AsbCloudApp.Data
+{
+    public class DatesRangeDto
+    {
+        public DateTime From { get; set; }
+        public DateTime To { get; set; }
+    }
+}
diff --git a/AsbCloudApp/Services/IMessageService.cs b/AsbCloudApp/Services/IMessageService.cs
index 9f3b13d0..0ca4b916 100644
--- a/AsbCloudApp/Services/IMessageService.cs
+++ b/AsbCloudApp/Services/IMessageService.cs
@@ -7,7 +7,7 @@ namespace AsbCloudApp.Services
     public interface IMessageService
     {
         PaginationContainer<MessageDto> GetMessages(int wellId, IEnumerable<int> categoryids = null, DateTime begin = default, DateTime end = default, int skip = 0, int take = 32);
-        IDictionary<string, DateTime> GetMessagesDatesRange(int wellId);
+        DatesRangeDto GetMessagesDatesRange(int wellId);
         void Insert(string uid, IEnumerable<TelemetryMessageDto> dtos);
     }
 }
\ No newline at end of file
diff --git a/AsbCloudApp/Services/IWellService.cs b/AsbCloudApp/Services/IWellService.cs
index e3d111c7..88378e6f 100644
--- a/AsbCloudApp/Services/IWellService.cs
+++ b/AsbCloudApp/Services/IWellService.cs
@@ -1,5 +1,6 @@
 using AsbCloudApp.Data;
 using System.Collections.Generic;
+using System.Security.Claims;
 
 namespace AsbCloudApp.Services
 {
@@ -7,5 +8,6 @@ namespace AsbCloudApp.Services
     {
         IEnumerable<WellDto> GetWellsByCustomer(int idCustomer);
         IEnumerable<WellDto> GetTransmittingWells(int idCustomer);
+        bool CheckWellOwnership(int idCustomer, int wellId);
     }
 }
diff --git a/AsbCloudInfrastructure/Services/MessageService.cs b/AsbCloudInfrastructure/Services/MessageService.cs
index f1f0f0e0..ce840653 100644
--- a/AsbCloudInfrastructure/Services/MessageService.cs
+++ b/AsbCloudInfrastructure/Services/MessageService.cs
@@ -31,7 +31,7 @@ namespace AsbCloudInfrastructure.Services
             cacheWells = cacheDb.GetCachedTable<Well>((AsbCloudDbContext)db);
         }
 
-        private IEnumerable<Message> GetMessagesByWell(int wellId)
+        private Telemetry GetTelemetryByWellId(int wellId)
         {
             var well = cacheWells.FirstOrDefault(w => w.Id == wellId);
             if (well is null)
@@ -41,20 +41,12 @@ namespace AsbCloudInfrastructure.Services
             if (telemetry is null)
                 return null;
 
-            var messages = from m in db.Messages
-                           where m.IdTelemetry == telemetry.Id
-                           select m;
-
-            return messages;
+            return telemetry;
         }
 
         public PaginationContainer<MessageDto> GetMessages(int wellId, IEnumerable<int> categoryids = default, DateTime begin = default, DateTime end = default, int skip = 0, int take = 32)
         {
-            var well = cacheWells.FirstOrDefault(w => w.Id == wellId);
-            if (well is null)
-                return null;
-
-            var telemetry = cacheTelemetry.FirstOrDefault(t => t.Id == well.Id);
+            var telemetry = GetTelemetryByWellId(wellId);
             if (telemetry is null)
                 return null;
 
@@ -123,19 +115,21 @@ namespace AsbCloudInfrastructure.Services
             return result;
         }
 
-        public IDictionary<string, DateTime> GetMessagesDatesRange(int wellId)
+        public DatesRangeDto GetMessagesDatesRange(int wellId)
         {
-            IEnumerable<Message> wellMessages = GetMessagesByWell(wellId) ?? new List<Message>();
+            var telemetry = GetTelemetryByWellId(wellId);
+            if (telemetry is null)
+                return null;
 
-            IEnumerable<DateTime> wellMessagesDates = wellMessages.Select(wm => wm.Date);
+            var messagesDatesRange = (from m in db.Messages
+                                      where m.IdTelemetry == telemetry.Id
+                                      group m by m.IdTelemetry into g
+                                      select new DatesRangeDto { 
+                                         From = g.Min(d => d.Date),
+                                         To = g.Max(d => d.Date)
+                                      }).FirstOrDefault();
 
-            IDictionary<string, DateTime> messagesDatesRange = new Dictionary<string, DateTime>();
-
-            messagesDatesRange.Add("From", wellMessagesDates.Any() ? wellMessagesDates.Min() : DateTime.MinValue);
-
-            messagesDatesRange.Add("To", wellMessagesDates.Any() ? wellMessagesDates.Max() : DateTime.MaxValue);
-
-            return messagesDatesRange;
+            return messagesDatesRange ?? new DatesRangeDto { From = DateTime.MinValue, To = DateTime.MaxValue};
         }
 
         public void Insert(string uid, IEnumerable<TelemetryMessageDto> dtos)
diff --git a/AsbCloudInfrastructure/Services/WellService.cs b/AsbCloudInfrastructure/Services/WellService.cs
index 83df1397..a358c97b 100644
--- a/AsbCloudInfrastructure/Services/WellService.cs
+++ b/AsbCloudInfrastructure/Services/WellService.cs
@@ -1,6 +1,7 @@
 using AsbCloudApp.Data;
 using AsbCloudApp.Services;
 using AsbCloudDb.Model;
+using AsbCloudInfrastructure.Services.Cache;
 using System.Collections.Generic;
 using System.Linq;
 using System;
@@ -11,11 +12,13 @@ namespace AsbCloudInfrastructure.Services
     {
         private readonly IAsbCloudDbContext db;
         private readonly ITelemetryTracker telemetryTracker;
+        private readonly ICacheTable<Well> cacheWells;
 
-        public WellService(IAsbCloudDbContext db, ITelemetryTracker telemetryTracker)
+        public WellService(IAsbCloudDbContext db, ITelemetryTracker telemetryTracker, CacheDb cacheDb)
         {
             this.db = db;
             this.telemetryTracker = telemetryTracker;
+            cacheWells = cacheDb.GetCachedTable<Well>((AsbCloudDbContext)db);
         }
 
         public IEnumerable<WellDto> GetTransmittingWells(int idCustomer)
@@ -37,6 +40,10 @@ namespace AsbCloudInfrastructure.Services
             return wells.Select(w => From(w));
         }
 
+        public bool CheckWellOwnership(int idCustomer, int wellId)
+         => cacheWells.Contains(w => w.Id == wellId && w.IdCustomer == idCustomer);
+
+
         private static WellDto From(Well well)
         {
             var wellDto = new WellDto
diff --git a/AsbCloudWebApi/Controllers/MessageController.cs b/AsbCloudWebApi/Controllers/MessageController.cs
index e3c1fbbd..3331eb04 100644
--- a/AsbCloudWebApi/Controllers/MessageController.cs
+++ b/AsbCloudWebApi/Controllers/MessageController.cs
@@ -11,10 +11,12 @@ namespace AsbCloudWebApi.Controllers
     public class MessageController : ControllerBase
     {
         private readonly IMessageService messageService;
+        private readonly IWellService wellService;
 
-        public MessageController(IMessageService messageService)
+        public MessageController(IMessageService messageService, IWellService wellService)
         {
             this.messageService = messageService;
+            this.wellService = wellService;
         }
 
         /// <summary>
@@ -44,10 +46,20 @@ namespace AsbCloudWebApi.Controllers
 
         [HttpGet]
         [Route("{wellId}/messagesDatesRange")]
-        [ProducesResponseType(typeof(IDictionary<string, DateTime>), (int)System.Net.HttpStatusCode.OK)]
+        [ProducesResponseType(typeof(DatesRangeDto), (int)System.Net.HttpStatusCode.OK)]
         public IActionResult GetMessagesDateRange(int wellId)
         {
-            IDictionary<string, DateTime> wellMessagesDatesRange = messageService.GetMessagesDatesRange(wellId);
+            int? idCustomer = User.GetCustomerId();
+
+            if (idCustomer is null)
+                return BadRequest();
+
+            bool isCustomerOwnsWell = wellService.CheckWellOwnership((int)idCustomer, wellId);
+            
+            if (!isCustomerOwnsWell)
+                return Forbid();
+
+            DatesRangeDto wellMessagesDatesRange = messageService.GetMessagesDatesRange(wellId);
 
             return Ok(wellMessagesDatesRange);
         }