diff --git a/const.go b/const.go
index 8290a9a..aa09f24 100644
--- a/const.go
+++ b/const.go
@@ -1,3 +1,3 @@
 package goip
 
-const Version = "1.0.27"
+const Version = "1.0.28"
diff --git a/ip2region/ip2region.db b/ip2region/ip.db
similarity index 100%
rename from ip2region/ip2region.db
rename to ip2region/ip.db
diff --git a/ip2region/ip2region.go b/ip2region/ip2region.go
index a767860..cef1492 100644
--- a/ip2region/ip2region.go
+++ b/ip2region/ip2region.go
@@ -6,6 +6,7 @@ import (
 	"go.dtapp.net/gostring"
 	"io/ioutil"
 	"log"
+	"net"
 	"os"
 	"strconv"
 	"strings"
@@ -36,7 +37,7 @@ type Ip2Region struct {
 	dbFile string
 }
 
-//go:embed ip2region.db
+//go:embed ip.db
 var dbBinStr []byte
 
 type IpInfo struct {
@@ -89,6 +90,11 @@ func getIpInfo(ipStr string, cityId int64, line []byte) (ipInfo IpInfo) {
 func (r *Ip2Region) MemorySearch(ipStr string) (ipInfo IpInfo, err error) {
 
 	ipInfo.IP = ipStr
+	if net.ParseIP(ipStr).To4() == nil {
+		if net.ParseIP(ipStr).To16() == nil {
+			return ipInfo, err
+		}
+	}
 
 	if r.totalBlocks == 0 {
 
diff --git a/v4/qqwry.dat b/v4/ip.dat
similarity index 100%
rename from v4/qqwry.dat
rename to v4/ip.dat
diff --git a/v4/ipv4.go b/v4/ipv4.go
index 2cef237..1ca739e 100644
--- a/v4/ipv4.go
+++ b/v4/ipv4.go
@@ -20,7 +20,7 @@ var (
 	end     uint32
 )
 
-//go:embed qqwry.dat
+//go:embed ip.dat
 var dat []byte
 
 type Pointer struct {
@@ -62,11 +62,11 @@ func (q *Pointer) readData(length uint32) (rs []byte) {
 }
 
 // Find ip地址查询对应归属地信息
-func (q *Pointer) Find(ip string) (res Result) {
+func (q *Pointer) Find(ipStr string) (res Result) {
 
 	// 赋值
-	res.IP = ip
-	if net.ParseIP("61.241.55.180").To4() == nil {
+	res.IP = ipStr
+	if net.ParseIP(ipStr).To4() == nil {
 		// 不是ip地址
 		return res
 	}
@@ -74,7 +74,7 @@ func (q *Pointer) Find(ip string) (res Result) {
 	q.Offset = 0
 
 	// 偏移
-	offset = q.searchIndex(binary.BigEndian.Uint32(net.ParseIP(ip).To4()))
+	offset = q.searchIndex(binary.BigEndian.Uint32(net.ParseIP(ipStr).To4()))
 	if offset <= 0 {
 		return
 	}
diff --git a/v6/ipv6wry.db b/v6/ip.db
similarity index 100%
rename from v6/ipv6wry.db
rename to v6/ip.db
diff --git a/v6/ipv6.go b/v6/ipv6.go
index 414426f..024d1ff 100644
--- a/v6/ipv6.go
+++ b/v6/ipv6.go
@@ -31,7 +31,7 @@ type Result struct {
 	Isp      string `json:"isp,omitempty"`      // 运营商
 }
 
-//go:embed ipv6wry.db
+//go:embed ip.db
 var dat []byte
 
 type Pointer struct {
@@ -66,15 +66,19 @@ func (q *Pointer) readData(length uint32) (rs []byte) {
 }
 
 // Find ip地址查询对应归属地信息
-func (q *Pointer) Find(ip string) (res Result) {
+func (q *Pointer) Find(ipStr string) (res Result) {
 
 	res = Result{}
-	res.IP = ip
+	res.IP = ipStr
+	if net.ParseIP(ipStr).To16() == nil {
+		return Result{}
+	}
+
 	q.Offset = 0
 
 	tp := big.NewInt(0)
 	op := big.NewInt(0)
-	tp.SetBytes(net.ParseIP(ip).To16())
+	tp.SetBytes(net.ParseIP(ipStr).To16())
 	op.SetString("18446744073709551616", 10)
 	op.Div(tp, op)
 	tp.SetString("FFFFFFFFFFFFFFFF", 16)