diff --git a/dist/util.d.ts b/dist/util.d.ts
index c28be43..9c00655 100644
--- a/dist/util.d.ts
+++ b/dist/util.d.ts
@@ -6,4 +6,5 @@ export declare function isDomain(domain: string): boolean;
 export declare function resolverEmptyResponse(): DNSResult;
 export declare function resolverError(e: Error | string): DNSResult;
 export declare function resolveSuccess(records: DNSRecord[]): DNSResult;
+export declare function normalizeDomain(domain: string): string;
 //# sourceMappingURL=util.d.ts.map
diff --git a/dist/util.d.ts.map b/dist/util.d.ts.map
index 826c238..04fea8c 100644
--- a/dist/util.d.ts.map
+++ b/dist/util.d.ts.map
@@ -1 +1 @@
-{"version":3,"file":"util.d.ts","sourceRoot":"","sources":["../src/util.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,SAAS,EAAE,SAAS,EAAE,MAAM,YAAY,CAAC;AAElD,wBAAgB,MAAM,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAM7C;AAED,wBAAgB,MAAM,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAS7C;AAED,wBAAgB,IAAI,CAAC,EAAE,EAAE,MAAM,WAI9B;AAED,wBAAgB,QAAQ,CAAC,MAAM,EAAE,MAAM,WAItC;AACD,wBAAgB,qBAAqB,IAAI,SAAS,CAIjD;AAED,wBAAgB,aAAa,CAAC,CAAC,EAAE,KAAK,GAAG,MAAM,GAAG,SAAS,CAQ1D;AAED,wBAAgB,cAAc,CAAC,OAAO,EAAE,SAAS,EAAE,GAAG,SAAS,CAI9D"}
\ No newline at end of file
+{"version":3,"file":"util.d.ts","sourceRoot":"","sources":["../src/util.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,SAAS,EAAE,SAAS,EAAE,MAAM,YAAY,CAAC;AAElD,wBAAgB,MAAM,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAM7C;AAED,wBAAgB,MAAM,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAS7C;AAED,wBAAgB,IAAI,CAAC,EAAE,EAAE,MAAM,WAI9B;AAED,wBAAgB,QAAQ,CAAC,MAAM,EAAE,MAAM,WAItC;AACD,wBAAgB,qBAAqB,IAAI,SAAS,CAIjD;AAED,wBAAgB,aAAa,CAAC,CAAC,EAAE,KAAK,GAAG,MAAM,GAAG,SAAS,CAQ1D;AAED,wBAAgB,cAAc,CAAC,OAAO,EAAE,SAAS,EAAE,GAAG,SAAS,CAI9D;AACD,wBAAgB,eAAe,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAEtD"}
\ No newline at end of file
diff --git a/dist/util.js b/dist/util.js
index c53e9c2..7391861 100644
--- a/dist/util.js
+++ b/dist/util.js
@@ -38,3 +38,6 @@ export function resolveSuccess(records) {
         records,
     };
 }
+export function normalizeDomain(domain) {
+    return domain.replace(/^\.+|\.+$/g, "").replace(/^\/+|\/+$/g, "");
+}