diff --git a/.gitignore b/.gitignore
index de8fb30..c00f18c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -161,3 +161,5 @@ Network Trash Folder
 Temporary Items
 .apdisk
 
+# compile target directory
+dist/
diff --git a/ipgeo/ipfilter.go b/ipgeo/ipfilter.go
new file mode 100644
index 0000000..f47b80c
--- /dev/null
+++ b/ipgeo/ipfilter.go
@@ -0,0 +1,81 @@
+package ipgeo
+
+import (
+	"net"
+)
+
+func cidrRangeContains(cidrRange string, checkIP string) bool {
+	_, ipNet, err := net.ParseCIDR(cidrRange)
+	if err != nil {
+		return false
+	}
+	secondIP := net.ParseIP(checkIP)
+	return ipNet.Contains(secondIP)
+}
+
+// 被选到的返回 geodata, true  否则返回 nil, false
+func Filter(ip string) (*IPGeoData, bool) {
+	//geodata := &IPGeoData{}
+	asn := ""
+	whois := ""
+	isFiltered := false
+	switch {
+	//rfc1918
+	case net.ParseIP(ip).IsPrivate():
+		asn = ""
+		whois = "RFC1918"
+		isFiltered = true
+		break
+	//IANA Reserved Address Space
+	case cidrRangeContains("100.64.0.0/10", ip):
+		asn = ""
+		whois = "RFC6598"
+		isFiltered = true
+		break
+	case cidrRangeContains("198.18.0.0/15", ip):
+		asn = ""
+		whois = "RFC2544"
+		isFiltered = true
+		break
+	case cidrRangeContains("198.51.100.0/24", ip):
+	case cidrRangeContains("203.0.113.0/24", ip):
+		asn = ""
+		whois = "RFC5737"
+		isFiltered = true
+		break
+	case cidrRangeContains("240.0.0.0/4", ip):
+		asn = ""
+		whois = "RFC1112"
+		isFiltered = true
+		break
+	//Defense Information System Network
+	case cidrRangeContains("6.0.0.0/8", ip):
+	case cidrRangeContains("7.0.0.0/8", ip):
+	case cidrRangeContains("11.0.0.0/8", ip):
+	case cidrRangeContains("21.0.0.0/8", ip):
+	case cidrRangeContains("22.0.0.0/8", ip):
+	case cidrRangeContains("26.0.0.0/8", ip):
+	case cidrRangeContains("28.0.0.0/8", ip):
+	case cidrRangeContains("29.0.0.0/8", ip):
+	case cidrRangeContains("30.0.0.0/8", ip):
+	case cidrRangeContains("33.0.0.0/8", ip):
+	case cidrRangeContains("55.0.0.0/8", ip):
+	case cidrRangeContains("214.0.0.0/8", ip):
+	case cidrRangeContains("215.0.0.0/8", ip):
+		asn = ""
+		whois = "DOD"
+		isFiltered = true
+		break
+	default:
+	}
+	if isFiltered == false {
+		return nil, false
+	} else {
+		return &IPGeoData{
+			Asnumber: asn,
+			//Isp:      isp,
+			//Owner:    isp,
+			Whois: whois,
+		}, true
+	}
+}
diff --git a/printer/printer.go b/printer/printer.go
index d034c5b..aa3afab 100644
--- a/printer/printer.go
+++ b/printer/printer.go
@@ -74,12 +74,13 @@ func formatIpGeoData(ip string, data *ipgeo.IPGeoData) string {
 
 	// TODO: 判断阿里云和腾讯云内网，数据不足，有待进一步完善
 	// TODO: 移动IDC判断到Hop.fetchIPData函数，减少API调用
-	if strings.HasPrefix(ip, "9.") {
-		res = append(res, "LAN Address")
-	} else if strings.HasPrefix(ip, "11.") {
-		res = append(res, "LAN Address")
-	} else if data.Country == "" {
-		res = append(res, "LAN Address")
+	//if strings.HasPrefix(ip, "9.") {
+	//	res = append(res, "LAN Address")
+	//} else if strings.HasPrefix(ip, "11.") {
+	//	res = append(res, "LAN Address")
+	//} else if data.Country == "" {
+	//	res = append(res, "LAN Address")
+	if false {
 	} else {
 		// 有些IP的归属信息为空，这个时候将ISP的信息填入
 		if data.Owner == "" {
diff --git a/trace/trace.go b/trace/trace.go
index 05caf50..d5f8f7d 100644
--- a/trace/trace.go
+++ b/trace/trace.go
@@ -140,7 +140,11 @@ func (h *Hop) fetchIPData(c Config) (err error) {
 		}
 	}
 	if c.IPGeoSource != nil && h.Geo == nil {
-		h.Geo, err = c.IPGeoSource(h.Address.String())
+		res := false
+		h.Geo, res = ipgeo.Filter(h.Address.String())
+		if !res {
+			h.Geo, err = c.IPGeoSource(h.Address.String())
+		}
 	}
 	return
 }