diff --git a/src/url/build_url_with_filter.ts b/src/url/build_url_with_filter.ts
deleted file mode 100644
index 2b624b3..0000000
--- a/src/url/build_url_with_filter.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-export default function buildUrlWithFilter(
-  url : string, 
-  filter? : Record<string, string>
-) : string {
-  if (filter) {
-    return `${url}/?${Object.entries(filter).map(([key, value]) => `${key}=${value}`).join('&')}`
-  }
-  
-  return url;
-}
diff --git a/src/url/parse_url_parameters.ts b/src/url/parse_url_parameters.ts
deleted file mode 100644
index 6923f9e..0000000
--- a/src/url/parse_url_parameters.ts
+++ /dev/null
@@ -1,24 +0,0 @@
-import { URLParameters } from './url_parameters.ts';
-import { DNSRecord } from '../record/dns_record.ts'
-
-export function parseUrlParameters(parameters : URLSearchParams) : URLParameters {
-  const token = parameters.get('token');
-  const zoneId = parameters.get('zoneId');
-  const records = parameters.get('records');
-
-  if (!token) {
-    throw new Error('Missing parameter: "token"')
-  }
-  if (!zoneId) {
-    throw new Error('Missing parameter: "zoneId"')
-  }
-  if (!records) {
-    throw new Error('Missing parameter: "records"')
-  }
-
-  return {
-    token,
-    zoneId,
-    records: JSON.parse(records) as DNSRecord[]
-  }
-}
diff --git a/src/url/url_parameters.ts b/src/url/url_parameters.ts
deleted file mode 100644
index 64794cc..0000000
--- a/src/url/url_parameters.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { DNSRecord } from '../record/dns_record.ts';
-
-export interface URLParameters {
-  token : string,
-  zoneId : string,
-  records : DNSRecord[]
-}