diff --git a/src/runtime/internal.ts b/src/runtime/internal.ts
index 1a9b71b26..cd386c2d3 100644
--- a/src/runtime/internal.ts
+++ b/src/runtime/internal.ts
@@ -3,16 +3,23 @@
 import { isArray, isString, isObject } from '@intlify/shared'
 import { hasProtocol } from 'ufo'
 import isHTTPS from 'is-https'
-import { useRequestHeaders, useRequestEvent, useCookie as useNuxtCookie, useRuntimeConfig, useNuxtApp } from '#imports'
+import {
+  useRequestHeaders,
+  useRequestEvent,
+  useCookie as useNuxtCookie,
+  useRuntimeConfig,
+  useNuxtApp,
+  useRouter
+} from '#imports'
 import { NUXT_I18N_MODULE_ID, DEFAULT_COOKIE_KEY, isSSG, localeCodes, normalizedLocales } from '#build/i18n.options.mjs'
-import { findBrowserLocale, getLocalesRegex } from './routing/utils'
+import { findBrowserLocale, getLocalesRegex, getRouteName } from './routing/utils'
 import { initCommonComposableOptions, type CommonComposableOptions } from './utils'
 import { createLogger } from 'virtual:nuxt-i18n-logger'
 
 import type { Locale } from 'vue-i18n'
 import type { DetectBrowserLanguageOptions, LocaleObject } from '#build/i18n.options.mjs'
 import type { RouteLocationNormalized, RouteLocationNormalizedLoaded } from 'vue-router'
-import type { CookieRef } from 'nuxt/app'
+import type { CookieRef, NuxtApp } from 'nuxt/app'
 import type { ModulePublicRuntimeConfig } from '../module'
 
 export function formatMessage(message: string) {
@@ -374,4 +381,66 @@ export const runtimeDetectBrowserLanguage = (
   return opts?.detectBrowserLanguage
 }
 
+/**
+ * Removes default routes depending on domain
+ */
+export function setupMultiDomainLocales(nuxtContext: NuxtApp, defaultLocaleDomain: string) {
+  const { multiDomainLocales, strategy, routesNameSeparator, defaultLocaleRouteNameSuffix } =
+    nuxtContext.$config.public.i18n
+
+  // feature disabled
+  if (!multiDomainLocales) return
+
+  // incompatible strategy
+  if (!(strategy === 'prefix_except_default' || strategy === 'prefix_and_default')) return
+
+  const router = useRouter()
+  const defaultRouteSuffix = [routesNameSeparator, defaultLocaleRouteNameSuffix].join('')
+
+  // remove or rename default routes if not applicable for domain
+  for (const route of router.getRoutes()) {
+    const routeName = getRouteName(route.name)
+
+    if (!routeName.includes(defaultRouteSuffix)) continue
+
+    const routeNameLocale = routeName.split(routesNameSeparator)[1]
+    if (routeNameLocale === defaultLocaleDomain) {
+      route.name = routeName.replace(defaultRouteSuffix, '')
+      continue
+    }
+
+    // use `route.name` directly as `routeName` stringifies `Symbol`
+    // @ts-expect-error type mismatch
+    router.removeRoute(route.name)
+  }
+}
+
+/**
+ * Returns default locale for the current domain, returns `defaultLocale` by default
+ */
+export function getDefaultLocaleForDomain(nuxtContext: NuxtApp) {
+  const { locales, defaultLocale, multiDomainLocales } = nuxtContext.$config.public.i18n
+
+  let defaultLocaleDomain: string = defaultLocale || ''
+
+  if (!multiDomainLocales) {
+    return defaultLocaleDomain
+  }
+
+  const host = getHost()
+  const hasDefaultForDomains = locales.some(
+    (l): l is LocaleObject => typeof l !== 'string' && Array.isArray(l.defaultForDomains)
+  )
+
+  if (hasDefaultForDomains) {
+    const findDefaultLocale = locales.find((l): l is LocaleObject =>
+      typeof l === 'string' || !Array.isArray(l.defaultForDomains) ? false : l.defaultForDomains.includes(host ?? '')
+    )
+
+    defaultLocaleDomain = findDefaultLocale?.code ?? ''
+  }
+
+  return defaultLocaleDomain
+}
+
 /* eslint-enable @typescript-eslint/no-explicit-any */
diff --git a/src/runtime/plugins/i18n.ts b/src/runtime/plugins/i18n.ts
index 71663dc2b..de2d43ded 100644
--- a/src/runtime/plugins/i18n.ts
+++ b/src/runtime/plugins/i18n.ts
@@ -1,13 +1,6 @@
 import { computed, ref, watch } from 'vue'
 import { createI18n } from 'vue-i18n'
-import {
-  defineNuxtPlugin,
-  useRoute,
-  addRouteMiddleware,
-  defineNuxtRouteMiddleware,
-  useNuxtApp,
-  useRouter
-} from '#imports'
+import { defineNuxtPlugin, useRoute, addRouteMiddleware, defineNuxtRouteMiddleware, useNuxtApp } from '#imports'
 import {
   localeCodes,
   vueI18nConfigs,
@@ -26,7 +19,8 @@ import {
   detectBrowserLanguage,
   getI18nCookie,
   runtimeDetectBrowserLanguage,
-  getHost
+  getDefaultLocaleForDomain,
+  setupMultiDomainLocales
 } from '../internal'
 import { inBrowser, resolveBaseUrl } from '../routing/utils'
 import { extendI18n, createLocaleFromRouteGetter } from '../routing/extends'
@@ -58,40 +52,9 @@ export default defineNuxtPlugin<NuxtI18nPluginInjections>({
     const route = useRoute()
     const { vueApp: app } = nuxt
     const nuxtContext = nuxt as unknown as NuxtApp
-    const host = getHost()
-    const { locales, defaultLocale, multiDomainLocales, strategy } = nuxtContext.$config.public.i18n
-
-    const hasDefaultForDomains = locales.some(
-      (l): l is LocaleObject => typeof l !== 'string' && Array.isArray(l.defaultForDomains)
-    )
-
-    let defaultLocaleDomain: string
-    if (defaultLocale) {
-      defaultLocaleDomain = defaultLocale
-    } else if (hasDefaultForDomains) {
-      const findDefaultLocale = locales.find((l): l is LocaleObject =>
-        typeof l === 'string' || !Array.isArray(l.defaultForDomains) ? false : l.defaultForDomains.includes(host ?? '')
-      )
-
-      defaultLocaleDomain = findDefaultLocale?.code ?? ''
-    } else {
-      defaultLocaleDomain = ''
-    }
 
-    if (multiDomainLocales && (strategy === 'prefix_except_default' || strategy === 'prefix_and_default')) {
-      const router = useRouter()
-      router.getRoutes().forEach(route => {
-        if (route.name?.toString().includes('___default')) {
-          const routeNameLocale = route.name.toString().split('___')[1]
-          if (routeNameLocale !== defaultLocaleDomain) {
-            router.removeRoute(route.name)
-          } else {
-            const newRouteName = route.name.toString().replace('___default', '')
-            route.name = newRouteName
-          }
-        }
-      })
-    }
+    const defaultLocaleDomain = getDefaultLocaleForDomain(nuxtContext)
+    setupMultiDomainLocales(nuxtContext, defaultLocaleDomain)
 
     // Fresh copy per request to prevent reusing mutated options
     const runtimeI18n = { ...nuxtContext.$config.public.i18n, defaultLocale: defaultLocaleDomain }