diff --git a/libsubfinder/engines/passive/passive.go b/libsubfinder/engines/passive/passive.go
index a5627ef..10449ca 100644
--- a/libsubfinder/engines/passive/passive.go
+++ b/libsubfinder/engines/passive/passive.go
@@ -36,6 +36,7 @@ import (
 	"github.com/Ice3man543/subfinder/libsubfinder/sources/waybackarchive"
 	"github.com/Ice3man543/subfinder/libsubfinder/sources/baidu"
 	"github.com/Ice3man543/subfinder/libsubfinder/sources/bing"
+	"github.com/Ice3man543/subfinder/libsubfinder/sources/ask"
 )
 
 // Sources configuration structure specifying what should we use
@@ -60,6 +61,7 @@ type Source struct {
 	Dnsdb          bool
 	Baidu          bool
 	Bing           bool
+	Ask            bool
 
 	NoOfSources int
 }
@@ -90,7 +92,8 @@ func PassiveDiscovery(state *helper.State) (finalPassiveSubdomains []string) {
 			fmt.Printf("\n[-] Searching For Subdomains in Netcraft")
 			fmt.Printf("\n[-] Searching For Subdomains in Dnsdb")
 			fmt.Printf("\n[-] Searching For Subdomains in Baidu")
-			fmt.Printf("\n[-] Searching For Subdomains in Bing\n")
+			fmt.Printf("\n[-] Searching For Subdomains in Bing")
+			fmt.Printf("\n[-] Searching For Subdomains in Ask\n")
 		}
 
 		sourceConfig = Source{true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, true, 19}
@@ -212,6 +215,11 @@ func PassiveDiscovery(state *helper.State) (finalPassiveSubdomains []string) {
 					fmt.Printf("\n[-] Searching For Subdomains in Bing")
 				}
 				sourceConfig.Bing = true
+			} else if source == "ask" {
+				if state.Silent != true {
+					fmt.Printf("\n[-] Searching For Subdomains in Ask")
+				}
+				sourceConfig.Ask = true
 				sourceConfig.NoOfSources = sourceConfig.NoOfSources + 1
 			}
 		}
@@ -278,6 +286,8 @@ func PassiveDiscovery(state *helper.State) (finalPassiveSubdomains []string) {
 	}
 	if sourceConfig.Bing == true {
 		go bing.Query(state, ch)
+	if sourceConfig.Ask == true {
+		go ask.Query(state, ch)
 	}
 
 	// Recieve data from all goroutines running
diff --git a/libsubfinder/sources/ask/ask.go b/libsubfinder/sources/ask/ask.go
new file mode 100644
index 0000000..0b6664f
--- /dev/null
+++ b/libsubfinder/sources/ask/ask.go
@@ -0,0 +1,96 @@
+//
+// Written By : @Mzack9999 (Marco Rivoli)
+//
+// Distributed Under MIT License
+// Copyrights (C) 2018 Ice3man
+//
+
+// A golang client for Ask Subdomain Discovery
+package ask
+
+import (
+	"fmt"
+	"io/ioutil"
+	"regexp"
+	"strconv"
+	"sort"
+	"net/url"
+
+	"github.com/Ice3man543/subfinder/libsubfinder/helper"
+)
+
+// all subdomains found
+var subdomains []string
+
+// Query function returns all subdomains found using the service.
+func Query(state *helper.State, ch chan helper.Result) {
+
+	var result helper.Result
+	result.Subdomains = subdomains
+	min_iterations := 15
+	max_iterations := 760
+	search_query := ""
+	current_page := 0
+	for current_iteration := 0; current_iteration <= max_iterations; current_iteration++ {
+		new_search_query := "site:" + state.Domain
+		if len(subdomains) > 0 {
+			new_search_query += " -www." + state.Domain
+		}
+		new_search_query = url.QueryEscape(new_search_query)
+		if search_query != new_search_query {
+			current_page = 0
+			search_query = new_search_query
+		}
+		
+		resp, err := helper.GetHTTPResponse("http://www.ask.com/web?q=" + search_query + "&page=" + strconv.Itoa(current_page) + "&qid=8D6EE6BF52E0C04527E51F64F22C4534&o=0&l=dir&qsrc=998&qo=pagination", state.Timeout)
+		if err != nil {
+			result.Error = err
+			ch <- result
+			return
+		}
+
+		// Get the response body
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			result.Error = err
+			ch <- result
+			return
+		}
+		src := string(body)
+		
+		re := regexp.MustCompile(`([a-z0-9]+\.)+` + state.Domain)
+		match := re.FindAllString(src, -1)
+
+		new_subdomains_found := 0
+		for _, subdomain := range match {
+			if sort.StringsAreSorted(subdomains) == false {
+				sort.Strings(subdomains)
+			}
+			
+			insert_index := sort.SearchStrings(subdomains, subdomain)
+			if insert_index < len(subdomains) && subdomains[insert_index] == subdomain {
+				continue
+			}
+
+			if state.Verbose == true {
+				if state.Color == true {
+					fmt.Printf("\n[%sAsk%s] %s", helper.Red, helper.Reset, subdomain)
+				} else {
+					fmt.Printf("\n[Ask] %s", subdomain)
+				}
+			}
+
+			subdomains = append(subdomains, subdomain)
+			new_subdomains_found++
+		}
+		// If no new subdomains are found exits after min_iterations
+		if new_subdomains_found == 0 && current_iteration > min_iterations {
+			break
+		}
+		current_page++
+	}
+
+	result.Subdomains = subdomains
+	result.Error = nil
+	ch <- result
+}
\ No newline at end of file
diff --git a/main.go b/main.go
index 8db9e85..6151592 100644
--- a/main.go
+++ b/main.go
@@ -86,7 +86,24 @@ func main() {
 			object := strings.Split(config, "=")
 
 			// Change value dynamically using reflect package
-			reflect.ValueOf(&state.ConfigState).Elem().FieldByName(object[0]).SetString(object[1])
+			if strings.EqualFold(object[0], "virustotalapikey") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("VirustotalAPIKey").SetString(object[1])
+			} else if strings.EqualFold(object[0], "passivetotalusername") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("PassivetotalUsername").SetString(object[1])
+			} else if strings.EqualFold(object[0], "passivetotalkey") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("PassivetotalKey").SetString(object[1])
+			} else if strings.EqualFold(object[0], "securitytrailskey") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("SecurityTrailsKey").SetString(object[1])
+			} else if strings.EqualFold(object[0], "riddleremail") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("RiddlerEmail").SetString(object[1])
+			} else if strings.EqualFold(object[0], "riddlerpassword") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("RiddlerPassword").SetString(object[1])
+			} else if strings.EqualFold(object[0], "censysusername") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("CensysUsername").SetString(object[1])
+			} else if strings.EqualFold(object[0], "censyssecret") == true {
+				reflect.ValueOf(&state.ConfigState).Elem().FieldByName("CensysSecret").SetString(object[1])
+			}
+
 			configJson, _ := json.MarshalIndent(state.ConfigState, "", "	")
 			err = ioutil.WriteFile(path, configJson, 0644)
 			if err != nil {