diff --git a/components/RelatedDomains.tsx b/components/RelatedDomains.tsx
index 8809279..272d916 100644
--- a/components/RelatedDomains.tsx
+++ b/components/RelatedDomains.tsx
@@ -9,19 +9,26 @@ type RelatedDomainsProps = {
   domain: string;
 };
 
-const RelatedDomains: FC<RelatedDomainsProps> = ({ domain: original }) => {
+const getRecommendations = (original: string) => {
   const domains = [];
 
   const splitOriginal = original.split('.');
-  for (let i = 1; i < splitOriginal.length - 1; i++) {
+  for (let i = 0; i < splitOriginal.length; i++) {
     const domain = splitOriginal.slice(i).join('.');
+    if (domain === original) continue;
     domains.push(domain);
   }
 
-  if (!original.startsWith('www.')) {
+  if (!original.startsWith('www.') && splitOriginal.length >= 2) {
     domains.unshift(`www.${original}`);
   }
 
+  return domains;
+};
+
+const RelatedDomains: FC<RelatedDomainsProps> = ({ domain: original }) => {
+  const domains = getRecommendations(original);
+
   return (
     <div className="my-4 flex flex-wrap gap-4">
       {domains.map((domain) => (
diff --git a/components/SearchForm.tsx b/components/SearchForm.tsx
index 7a7f62e..3247510 100644
--- a/components/SearchForm.tsx
+++ b/components/SearchForm.tsx
@@ -1,6 +1,5 @@
 'use client';
 
-import isValidDomain from 'is-valid-domain';
 import { Loader2 } from 'lucide-react';
 import { usePathname, useRouter } from 'next/navigation';
 import { toASCII } from 'punycode';
@@ -10,6 +9,7 @@ import { Button } from '@/components/ui/button';
 import { Input } from '@/components/ui/input';
 
 import { cn } from '@/lib/utils';
+import isValidDomain from '@/utils/isValidDomain';
 
 enum FormStates {
   Initial,
diff --git a/components/WhoisQuickInfo.tsx b/components/WhoisQuickInfo.tsx
index 2b70d5f..29c3a1d 100644
--- a/components/WhoisQuickInfo.tsx
+++ b/components/WhoisQuickInfo.tsx
@@ -1,7 +1,8 @@
-import isValidDomain from 'is-valid-domain';
 import { FC } from 'react';
 import whoiser, { type WhoisSearchResult } from 'whoiser';
 
+import isValidDomain from '@/utils/isValidDomain';
+
 import { Skeleton } from './ui/skeleton';
 
 type WhoisQuickInfoProps = {
diff --git a/package.json b/package.json
index ba53a1e..9724a6f 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,6 @@
     "clsx": "^2.0.0",
     "dataloader": "^2.2.2",
     "dns-packet": "^5.6.1",
-    "is-valid-domain": "^0.1.6",
     "leaflet": "^1.9.4",
     "leaflet-defaulticon-compatibility": "^0.1.2",
     "lucide-react": "^0.294.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 7d98664..2d4188f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -50,9 +50,6 @@ dependencies:
   dns-packet:
     specifier: ^5.6.1
     version: 5.6.1
-  is-valid-domain:
-    specifier: ^0.1.6
-    version: 0.1.6
   leaflet:
     specifier: ^1.9.4
     version: 1.9.4
@@ -4083,12 +4080,6 @@ packages:
       which-typed-array: 1.1.13
     dev: true
 
-  /is-valid-domain@0.1.6:
-    resolution: {integrity: sha512-ZKtq737eFkZr71At8NxOFcP9O1K89gW3DkdrGMpp1upr/ueWjj+Weh4l9AI4rN0Gt8W2M1w7jrG2b/Yv83Ljpg==}
-    dependencies:
-      punycode: 2.3.1
-    dev: false
-
   /is-weakmap@2.0.1:
     resolution: {integrity: sha512-NSBR4kH5oVj1Uwvv970ruUkCV7O1mzgVFO4/rev2cLRda9Tm9HrL70ZPut4rOHgY0FNrUu9BCbXA2sdQ+x0chA==}
     dev: true
diff --git a/utils/isValidDomain.ts b/utils/isValidDomain.ts
new file mode 100644
index 0000000..af2ccf6
--- /dev/null
+++ b/utils/isValidDomain.ts
@@ -0,0 +1,3 @@
+const isValidDomain = (domain: string) => /^(((?!-))(xn--|_)?[a-z0-9-]{0,61}[a-z0-9]{1,1}\.)*(xn--)?([a-z0-9][a-z0-9\-]{0,60}|[a-z0-9-]{1,30}\.[a-z]{2,})$/.test(domain)
+
+export default isValidDomain