diff --git a/Dockerfile b/Dockerfile
index 17a690b..994a62a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,4 +24,5 @@ EXPOSE 443/tcp
 
 USER root
 
-CMD ["/local-ip/local-ip"]
+# TODO: make these configurable too
+CMD ["/local-ip/local-ip", "--domain", "local-ip.sh", "--email", "admin@local-ip.sh", "--nameservers", "ns1.local-ip.sh.,ns2.local-ip.sh."]
diff --git a/certs/account.go b/certs/account.go
index f851285..614cf07 100644
--- a/certs/account.go
+++ b/certs/account.go
@@ -36,7 +36,8 @@ func (u *Account) GetPrivateKey() crypto.PrivateKey {
 }
 
 func LoadAccount() *Account {
-	jsonBytes, err := os.ReadFile(accountFilePath)
+	config := utils.GetConfig()
+	jsonBytes, err := os.ReadFile(config.AccountFilePath)
 	if err != nil {
 		if strings.Contains(err.Error(), "no such file or directory") {
 			RegisterAccount()
@@ -51,7 +52,7 @@ func LoadAccount() *Account {
 		utils.Logger.Fatal().Err(err).Msg("Failed to unmarshal account JSON file")
 	}
 
-	privKey, err := os.ReadFile(keyFilePath)
+	privKey, err := os.ReadFile(config.KeyFilePath)
 	if err != nil {
 		utils.Logger.Fatal().Err(err).Msg("Failed to read account's private key file")
 	}
@@ -61,41 +62,42 @@ func LoadAccount() *Account {
 }
 
 func RegisterAccount() {
+	config := utils.GetConfig()
 	privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 	if err != nil {
 		utils.Logger.Fatal().Err(err).Msg("Failed to generate account key")
 	}
 
 	account := &Account{
-		Email: email,
+		Email: config.Email,
 		key:   privateKey,
 	}
-	config := lego.NewConfig(account)
-	config.CADirURL = caDirUrl
-	legoClient, err := lego.NewClient(config)
+	legoConfig := lego.NewConfig(account)
+	legoConfig.CADirURL = config.CADirURL
+	legoClient, err := lego.NewClient(legoConfig)
 	if err != nil {
-		utils.Logger.Fatal().Err(err).Str("CA Directory URL", config.CADirURL).Msg("Failed to initialize lego client")
+		utils.Logger.Fatal().Err(err).Str("CA Directory URL", legoConfig.CADirURL).Msg("Failed to initialize lego client")
 	}
 
 	reg, err := legoClient.Registration.Register(registration.RegisterOptions{TermsOfServiceAgreed: true})
 	if err != nil {
-		utils.Logger.Fatal().Err(err).Str("CA Directory URL", config.CADirURL).Msg("Failed to register account to ACME server")
+		utils.Logger.Fatal().Err(err).Str("CA Directory URL", legoConfig.CADirURL).Msg("Failed to register account to ACME server")
 	}
 	if reg.Body.Status != "valid" {
-		utils.Logger.Fatal().Err(err).Str("CA Directory URL", config.CADirURL).Msgf("Registration failed with status %s", reg.Body.Status)
+		utils.Logger.Fatal().Err(err).Str("CA Directory URL", legoConfig.CADirURL).Msgf("Registration failed with status %s", reg.Body.Status)
 	}
 
 	utils.Logger.Debug().
-		Str("CA Directory URL", config.CADirURL).
+		Str("CA Directory URL", legoConfig.CADirURL).
 		Bool("TermsOfServiceAgreed", reg.Body.TermsOfServiceAgreed).
 		Msg("Successfully registered account to ACME server")
 	account.Registration = reg
 
-	os.MkdirAll(filepath.Dir(keyFilePath), os.ModePerm)
+	os.MkdirAll(filepath.Dir(config.KeyFilePath), os.ModePerm)
 	privKey := encode(privateKey)
-	err = os.WriteFile(keyFilePath, []byte(privKey), 0o644)
+	err = os.WriteFile(config.KeyFilePath, []byte(privKey), 0o644)
 	if err != nil {
-		utils.Logger.Fatal().Err(err).Str("path", keyFilePath).Msg("Failed to write account's private key file")
+		utils.Logger.Fatal().Err(err).Str("path", config.KeyFilePath).Msg("Failed to write account's private key file")
 	}
 
 	jsonBytes, err := json.MarshalIndent(account, "", "\t")
@@ -103,10 +105,10 @@ func RegisterAccount() {
 		utils.Logger.Fatal().Err(err).Msg("Failed to marshal account JSON file")
 	}
 
-	os.MkdirAll(filepath.Dir(accountFilePath), os.ModePerm)
-	err = os.WriteFile(accountFilePath, jsonBytes, 0o600)
+	os.MkdirAll(filepath.Dir(config.AccountFilePath), os.ModePerm)
+	err = os.WriteFile(config.AccountFilePath, jsonBytes, 0o600)
 	if err != nil {
-		utils.Logger.Fatal().Err(err).Str("path", accountFilePath).Msg("Failed to write account's JSON file")
+		utils.Logger.Fatal().Err(err).Str("path", config.AccountFilePath).Msg("Failed to write account's JSON file")
 	}
 }
 
diff --git a/certs/certs.go b/certs/certs.go
index 960483f..814a61b 100644
--- a/certs/certs.go
+++ b/certs/certs.go
@@ -27,14 +27,15 @@ func (c *certsClient) RequestCertificates() {
 }
 
 func (c *certsClient) requestCertificate(certType string) {
+	config := utils.GetConfig()
 	var lastCertificate *certificate.Resource
 	var domains []string
 	if certType == "wildcard" {
 		lastCertificate = c.lastWildcardCertificate
-		domains = []string{"*.local-ip.sh"}
+		domains = []string{fmt.Sprintf("*.%s", config.Domain)}
 	} else if certType == "root" {
 		lastCertificate = c.lastRootCertificate
-		domains = []string{"local-ip.sh"}
+		domains = []string{config.Domain}
 	} else {
 		utils.Logger.Fatal().Msgf("Unexpected certType %s. Only \"wildcard\" and \"root\" are supported", certType)
 	}
@@ -119,9 +120,10 @@ func persistFiles(certificates *certificate.Resource, certType string) {
 }
 
 func NewCertsClient(xip *xip.Xip, user *Account) *certsClient {
-	config := lego.NewConfig(user)
-	config.CADirURL = caDirUrl
-	legoClient, err := lego.NewClient(config)
+	config := utils.GetConfig()
+	legoConfig := lego.NewConfig(user)
+	legoConfig.CADirURL = config.CADirURL
+	legoClient, err := lego.NewClient(legoConfig)
 	if err != nil {
 		utils.Logger.Fatal().Err(err).Msg("Failed to initialize lego client")
 	}
diff --git a/certs/config.go b/certs/config.go
deleted file mode 100644
index b9577b1..0000000
--- a/certs/config.go
+++ /dev/null
@@ -1,21 +0,0 @@
-package certs
-
-import (
-	"fmt"
-	"net/url"
-
-	"github.com/go-acme/lego/v4/lego"
-)
-
-const (
-	email    = "admin@local-ip.sh"
-	caDirUrl = lego.LEDirectoryProduction
-	// caDirUrl = lego.LEDirectoryStaging
-)
-
-var (
-	parsedCaDirUrl, _ = url.Parse(caDirUrl)
-	caDirHostname     = parsedCaDirUrl.Hostname()
-	accountFilePath   = fmt.Sprintf("./.lego/accounts/%s/%s/account.json", caDirHostname, email)
-	keyFilePath       = fmt.Sprintf("./.lego/accounts/%s/%s/keys/%s.key", caDirHostname, email, email)
-)
diff --git a/cmd/root.go b/cmd/root.go
new file mode 100644
index 0000000..4845961
--- /dev/null
+++ b/cmd/root.go
@@ -0,0 +1,98 @@
+package cmd
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"github.com/go-acme/lego/v4/lego"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"local-ip.sh/utils"
+)
+
+var command = &cobra.Command{
+	Use: "local-ip.sh",
+	PreRun: func(cmd *cobra.Command, args []string) {
+		staging, err := cmd.Flags().GetBool("staging")
+		if err != nil {
+			utils.Logger.Fatal().Err(err).Msg("Unexpected error")
+		}
+
+		nameservers, err := cmd.Flags().GetString("nameservers")
+		if err != nil {
+			utils.Logger.Fatal().Err(err).Msg("Unexpected error")
+		}
+		viper.Set("NameServers", strings.Split(nameservers, ","))
+
+		var caDir string
+		if staging {
+			caDir = lego.LEDirectoryStaging
+		} else {
+			caDir = lego.LEDirectoryProduction
+		}
+		viper.Set("CADirURL", caDir)
+
+		parsedCaDirUrl, _ := url.Parse(caDir)
+		caDirHostname := parsedCaDirUrl.Hostname()
+		email := viper.GetString("Email")
+
+		viper.Set("AccountFilePath", fmt.Sprintf("./.lego/accounts/%s/%s/account.json", caDirHostname, email))
+		viper.Set("KeyFilePath", fmt.Sprintf("./.lego/accounts/%s/%s/keys/%s.key", caDirHostname, email, email))
+
+		utils.InitConfig()
+	},
+	Run: func(cmd *cobra.Command, args []string) {
+		c := utils.GetConfig()
+		fmt.Printf("%#v\n", c)
+		fmt.Println(c)
+		// n := xip.NewXip()
+
+		// go func() {
+		// 	account := certs.LoadAccount()
+		// 	certsClient := certs.NewCertsClient(n, account)
+
+		// 	time.Sleep(5 * time.Second)
+		// 	certsClient.RequestCertificates()
+
+		// 	for {
+		// 		// try to renew certificate every day
+		// 		time.Sleep(24 * time.Hour)
+		// 		certsClient.RequestCertificates()
+		// 	}
+		// }()
+
+		// go http.ServeHttp()
+
+		// n.StartServer()
+	},
+}
+
+func Execute() {
+	command.Flags().Uint("dns-port", 53, "Port for the DNS server")
+	viper.BindPFlag("dns-port", command.Flags().Lookup("dns-port"))
+
+	command.Flags().Uint("http-port", 80, "Port for the HTTP server")
+	viper.BindPFlag("http-port", command.Flags().Lookup("http-port"))
+
+	command.Flags().Uint("https-port", 443, "Port for the HTTPS server")
+	viper.BindPFlag("https-port", command.Flags().Lookup("https-port"))
+
+	command.Flags().Bool("staging", false, "Enable to use the Let's Encrypt staging environment to obtain certificates")
+	viper.BindPFlag("staging", command.Flags().Lookup("staging"))
+
+	command.Flags().String("domain", "", "Root domain (required)")
+	command.MarkFlagRequired("domain")
+	viper.BindPFlag("domain", command.Flags().Lookup("domain"))
+
+	command.Flags().String("email", "", "ACME account email address (required)")
+	command.MarkFlagRequired("email")
+	viper.BindPFlag("email", command.Flags().Lookup("email"))
+
+	command.Flags().String("nameservers", "", "List of nameservers separated by commas")
+	command.MarkFlagRequired("nameservers")
+
+	if err := command.Execute(); err != nil {
+		utils.Logger.Fatal().Err(err).Msg("")
+	}
+}
diff --git a/go.mod b/go.mod
index ee68657..abb8468 100644
--- a/go.mod
+++ b/go.mod
@@ -6,18 +6,38 @@ require (
 	github.com/go-acme/lego/v4 v4.10.1
 	github.com/miekg/dns v1.1.57
 	github.com/rs/zerolog v1.33.0
-	golang.org/x/net v0.17.0
+	golang.org/x/net v0.23.0
 	gopkg.in/natefinch/lumberjack.v2 v2.2.1
 )
 
 require (
 	github.com/cenkalti/backoff/v4 v4.2.0 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
 	github.com/go-jose/go-jose/v3 v3.0.0 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	golang.org/x/crypto v0.14.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/cobra v1.8.1 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.19.0 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.9.0 // indirect
+	golang.org/x/crypto v0.21.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
 	golang.org/x/mod v0.12.0 // indirect
 	golang.org/x/sys v0.22.0 // indirect
-	golang.org/x/text v0.13.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/tools v0.13.0 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )
diff --git a/go.sum b/go.sum
index fc0a859..e9ffe18 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,13 @@
 github.com/cenkalti/backoff/v4 v4.2.0 h1:HN5dHm3WBOgndBH6E8V0q2jIYIR3s9yglV8k/+MN3u4=
 github.com/cenkalti/backoff/v4 v4.2.0/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
 github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/fsnotify/fsnotify v1.7.0 h1:8JEhPFa5W2WU7YfeZzPNqzMP6Lwt7L2715Ggo0nosvA=
+github.com/fsnotify/fsnotify v1.7.0/go.mod h1:40Bi/Hjc2AVfZrqy+aj+yEI+/bRxZnMJyTJwOpGvigM=
 github.com/go-acme/lego/v4 v4.10.1 h1:MiJvoBXNdmAwEK/SImyhwZ8ZL4IR0jtWDD1wST+N138=
 github.com/go-acme/lego/v4 v4.10.1/go.mod h1:EMbf0Jmqwv94nJ5WL9qWnSXIBZnvsS9gNypansHGc6U=
 github.com/go-jose/go-jose/v3 v3.0.0 h1:s6rrhirfEP/CGIoc6p+PZAeogN2SxKav6Wp7+dyMWVo=
@@ -11,6 +15,12 @@ github.com/go-jose/go-jose/v3 v3.0.0/go.mod h1:RNkWWRld676jZEYoV3+XK8L2ZnNSvIsxF
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/google/go-cmp v0.5.0 h1:/QaMHBdZ26BB3SSst0Iwl10Epc+xhTquomWX0oZEB6w=
 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0VQdvPDY=
+github.com/magiconair/properties v1.8.7/go.mod h1:Dhd985XPs7jluiymwWYZ0G4Z61jb3vdS329zhj2hYo0=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
 github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
@@ -19,25 +29,68 @@ github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWE
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/miekg/dns v1.1.57 h1:Jzi7ApEIzwEPLHWRcafCN9LZSBbqQpxjt/wpgvg7wcM=
 github.com/miekg/dns v1.1.57/go.mod h1:uqRjCRUuEAA6qsOiJvDd+CFo/vW+y5WR6SNmHE55hZk=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6Wq+LM=
+github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
 github.com/rs/zerolog v1.33.0 h1:1cU2KZkvPxNyfgEmhHAz/1A9Bz+llsdYzklWFzgp0r8=
 github.com/rs/zerolog v1.33.0/go.mod h1:/7mN4D5sKwJLZQ2b/znpjC3/GQWY/xaDXUM0kKWRHss=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/sagikazarmark/locafero v0.4.0 h1:HApY1R9zGo4DBgr7dqsTH/JJxLTTsOt7u6keLGt6kNQ=
+github.com/sagikazarmark/locafero v0.4.0/go.mod h1:Pe1W6UlPYUk/+wc/6KFhbORCfqzgYEpgQ3O5fPuL3H4=
+github.com/sagikazarmark/slog-shim v0.1.0 h1:diDBnUNK9N/354PgrxMywXnAwEr1QZcOr6gto+ugjYE=
+github.com/sagikazarmark/slog-shim v0.1.0/go.mod h1:SrcSrq8aKtyuqEI1uvTDTK1arOWRIczQRv+GVI1AkeQ=
+github.com/sourcegraph/conc v0.3.0 h1:OQTbbt6P72L20UqAkXXuLOj79LfEanQ+YQFNpLA9ySo=
+github.com/sourcegraph/conc v0.3.0/go.mod h1:Sdozi7LEKbFPqYX2/J+iBAM6HpqSLTASQIKqDmF7Mt0=
+github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
+github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
+github.com/spf13/cast v1.6.0 h1:GEiTHELF+vaR5dhz3VqZfFSzZjYbgeKDpBxQVS4GYJ0=
+github.com/spf13/cast v1.6.0/go.mod h1:ancEpBxwJDODSW/UG4rDrAqiKolqNNh2DX3mk86cAdo=
+github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
+github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
+github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/spf13/viper v1.19.0 h1:RWq5SEjt8o25SROyN3z2OrDB9l7RPd3lwTWU8EcEdcI=
+github.com/spf13/viper v1.19.0/go.mod h1:GQUN9bilAbhU/jgc1bKs99f/suXKeUMct8Adx5+Ntkg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
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 golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
 golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
+golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=
+golang.org/x/crypto v0.21.0/go.mod h1:0BP7YvVV9gBbVKyeTG0Gyn+gZm94bibOW5BjDEYAOMs=
+golang.org/x/exp v0.0.0-20230905200255-921286631fa9 h1:GoHiUyI/Tp2nVkLI2mCxVkOjsbSXD66ic0XW0js0R9g=
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 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
 golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
+golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
+golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
 golang.org/x/sync v0.4.0 h1:zxkM55ReGkDlKSM+Fu41A+zmbZuaPVbGMzvvdUPznYQ=
 golang.org/x/sync v0.4.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -50,10 +103,14 @@ golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
 golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/tools v0.13.0 h1:Iey4qkscZuv0VvIt8E0neZjtPVQFSc870HQ448QgEmQ=
 golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/ini.v1 v1.67.0 h1:Dgnx+6+nfE+IfzjUEISNeydPJh9AXNNsWbGP9KzCsOA=
+gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/natefinch/lumberjack.v2 v2.2.1 h1:bBRl1b0OH9s/DuPhuXpNl+VtCaJXFZ5/uEFST95x9zc=
 gopkg.in/natefinch/lumberjack.v2 v2.2.1/go.mod h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/main.go b/main.go
index 9f4d601..38e41d6 100644
--- a/main.go
+++ b/main.go
@@ -1,35 +1,9 @@
 package main
 
 import (
-	"flag"
-	"time"
-
-	"local-ip.sh/certs"
-	"local-ip.sh/http"
-	"local-ip.sh/xip"
+	"local-ip.sh/cmd"
 )
 
 func main() {
-	port := flag.Int("port", 53, "port the DNS server should bind to")
-	flag.Parse()
-
-	n := xip.NewXip(*port)
-
-	go func() {
-		account := certs.LoadAccount()
-		certsClient := certs.NewCertsClient(n, account)
-
-		time.Sleep(5 * time.Second)
-		certsClient.RequestCertificates()
-
-		for {
-			// try to renew certificate every day
-			time.Sleep(24 * time.Hour)
-			certsClient.RequestCertificates()
-		}
-	}()
-
-	go http.ServeHttp()
-
-	n.StartServer()
+	cmd.Execute()
 }
diff --git a/utils/config.go b/utils/config.go
new file mode 100644
index 0000000..f2ff1cc
--- /dev/null
+++ b/utils/config.go
@@ -0,0 +1,29 @@
+package utils
+
+import (
+	"github.com/spf13/viper"
+)
+
+type config struct {
+	DnsPort   uint `mapstructure:"dns-port"`
+	HttpPort  uint `mapstructure:"http-port"`
+	HttpsPort uint `mapstructure:"https-port"`
+	Domain    string
+	Email     string
+
+	NameServers     []string
+	CADirURL        string
+	AccountFilePath string
+	KeyFilePath     string
+}
+
+var conf = &config{}
+
+func InitConfig() *config {
+	viper.Unmarshal(conf)
+	return conf
+}
+
+func GetConfig() *config {
+	return conf
+}
diff --git a/xip/xip.go b/xip/xip.go
index c9fae2f..3099f42 100644
--- a/xip/xip.go
+++ b/xip/xip.go
@@ -26,16 +26,12 @@ type HardcodedRecord struct {
 	SRV   *dns.SRV
 }
 
-const (
-	zone        = "local-ip.sh."
-	nameservers = "ns1.local-ip.sh.,ns2.local-ip.sh."
-)
-
 var (
 	flyRegion        = os.Getenv("FLY_REGION")
 	dottedIpV4Regex  = regexp.MustCompile(`(?:^|(?:[\w\d])+\.)(((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\.?\b){4})($|[.-])`)
 	dashedIpV4Regex  = regexp.MustCompile(`(?:^|(?:[\w\d])+\.)(((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\-?\b){4})($|[.-])`)
 	hardcodedRecords = map[string]HardcodedRecord{
+		// TODO: maybe --nameservers ns1.local-ip.sh.=137.66.40.11,ns2.local-ip.sh.=137.66.40.12
 		"ns.local-ip.sh.": {
 			// record holding ip addresses of ns1 and ns2
 			A: []net.IP{
@@ -424,18 +420,20 @@ func (xip *Xip) StartServer() {
 	utils.Logger.Info().Str("dns_address", xip.server.Addr).Msg("DNS server listening")
 }
 
-func NewXip(port int) (xip *Xip) {
+func NewXip() (xip *Xip) {
+	config := utils.GetConfig()
 	xip = &Xip{}
 
-	for _, ns := range strings.Split(nameservers, ",") {
+	for _, ns := range config.NameServers {
 		xip.nameServers = append(xip.nameServers, &dns.NS{Ns: ns})
 	}
 
 	xip.server = dns.Server{
-		Addr: fmt.Sprintf(":%d", port),
+		Addr: fmt.Sprintf(":%d", config.DnsPort),
 		Net:  "udp",
 	}
 
+	zone := fmt.Sprintf("%s.", config.Domain)
 	dns.HandleFunc(zone, xip.handleDnsRequest)
 
 	return xip