diff --git a/api.go b/api.go
new file mode 100644
index 0000000..3b6aaef
--- /dev/null
+++ b/api.go
@@ -0,0 +1,38 @@
+package mullsox
+
+type MyIPDetails struct {
+	Ip                    string  `json:"ip"`
+	Country               string  `json:"country"`
+	City                  string  `json:"city"`
+	Longitude             float64 `json:"longitude"`
+	Latitude              float64 `json:"latitude"`
+	MullvadExitIp         bool    `json:"mullvad_exit_ip"`
+	MullvadExitIpHostname string  `json:"mullvad_exit_ip_hostname"`
+	MullvadServerType     string  `json:"mullvad_server_type"`
+	Blacklisted           struct {
+		Blacklisted bool `json:"blacklisted"`
+		Results     []struct {
+			Name        string `json:"name"`
+			Link        string `json:"link"`
+			Blacklisted bool   `json:"blacklisted"`
+		} `json:"results"`
+	} `json:"blacklisted"`
+	Organization string `json:"organization"`
+}
+
+type MullvadServer struct {
+	Hostname         string `json:"hostname"`
+	CountryCode      string `json:"country_code"`
+	CountryName      string `json:"country_name"`
+	CityCode         string `json:"city_code"`
+	CityName         string `json:"city_name"`
+	Active           bool   `json:"active"`
+	Owned            bool   `json:"owned"`
+	Provider         string `json:"provider"`
+	Ipv4AddrIn       string `json:"ipv4_addr_in"`
+	Ipv6AddrIn       string `json:"ipv6_addr_in"`
+	NetworkPortSpeed int    `json:"network_port_speed"`
+	Pubkey           string `json:"pubkey"`
+	MultihopPort     int    `json:"multihop_port"`
+	SocksName        string `json:"socks_name"`
+}
diff --git a/mullvad.go b/check.go
similarity index 55%
rename from mullvad.go
rename to check.go
index 34a163d..c5205da 100644
--- a/mullvad.go
+++ b/check.go
@@ -1,4 +1,4 @@
-package main
+package mullsox
 
 import (
 	"context"
@@ -9,9 +9,9 @@ import (
 	"time"
 )
 
-const AimHost = "am.i.mullvad.net"
-const Ipv4Endpoint = `https://ipv4.` + AimHost
-const Ipv6Endpoint = `https://ipv6.` + AimHost
+const baseEndpoint = "am.i.mullvad.net"
+const Ipv4Endpoint = `https://ipv4.` + baseEndpoint
+const Ipv6Endpoint = `https://ipv6.` + baseEndpoint
 
 func CheckIP4(ctx context.Context, h *http.Client) (details *MyIPDetails, err error) {
 	return checkIP(ctx, h, false)
@@ -102,40 +102,3 @@ func checkIP(ctx context.Context, h *http.Client, ipv6 bool) (details *MyIPDetai
 	err = json.Unmarshal(cytes, &details)
 	return
 }
-
-type MyIPDetails struct {
-	Ip                    string  `json:"ip"`
-	Country               string  `json:"country"`
-	City                  string  `json:"city"`
-	Longitude             float64 `json:"longitude"`
-	Latitude              float64 `json:"latitude"`
-	MullvadExitIp         bool    `json:"mullvad_exit_ip"`
-	MullvadExitIpHostname string  `json:"mullvad_exit_ip_hostname"`
-	MullvadServerType     string  `json:"mullvad_server_type"`
-	Blacklisted           struct {
-		Blacklisted bool `json:"blacklisted"`
-		Results     []struct {
-			Name        string `json:"name"`
-			Link        string `json:"link"`
-			Blacklisted bool   `json:"blacklisted"`
-		} `json:"results"`
-	} `json:"blacklisted"`
-	Organization string `json:"organization"`
-}
-
-type MullvadServer struct {
-	Hostname         string `json:"hostname"`
-	CountryCode      string `json:"country_code"`
-	CountryName      string `json:"country_name"`
-	CityCode         string `json:"city_code"`
-	CityName         string `json:"city_name"`
-	Active           bool   `json:"active"`
-	Owned            bool   `json:"owned"`
-	Provider         string `json:"provider"`
-	Ipv4AddrIn       string `json:"ipv4_addr_in"`
-	Ipv6AddrIn       string `json:"ipv6_addr_in"`
-	NetworkPortSpeed int    `json:"network_port_speed"`
-	Pubkey           string `json:"pubkey"`
-	MultihopPort     int    `json:"multihop_port"`
-	SocksName        string `json:"socks_name"`
-}
diff --git a/mullvad_test.go b/check_test.go
similarity index 98%
rename from mullvad_test.go
rename to check_test.go
index 48f83c2..083b1a6 100644
--- a/mullvad_test.go
+++ b/check_test.go
@@ -1,4 +1,4 @@
-package main
+package mullsox
 
 import (
 	"context"