diff --git a/src/auth/remote-sms-auth.guard.ts b/src/auth/remote-sms-auth.guard.ts
index b2e6f28..30e7683 100644
--- a/src/auth/remote-sms-auth.guard.ts
+++ b/src/auth/remote-sms-auth.guard.ts
@@ -7,6 +7,10 @@ import {
 import { ConfigService } from '@nestjs/config';
 import { createHmac, timingSafeEqual } from 'crypto';
 import { PrismaService } from '../prisma/prisma.service';
+import {
+  findTenantForHost,
+  normalizeTenantHost,
+} from './tenant-host.util';
 
 const MAX_SKEW_SECONDS = 300;
 
@@ -88,7 +92,7 @@ export class RemoteSmsAuthGuard implements CanActivate {
       throw new UnauthorizedException('timestamp منقضی است');
     }
 
-    const domain = this.normalizeHost(domainRaw);
+    const domain = normalizeTenantHost(domainRaw);
     if (!domain) {
       throw new UnauthorizedException('دامنه نامعتبر است');
     }
@@ -138,7 +142,7 @@ export class RemoteSmsAuthGuard implements CanActivate {
   }
 
   private async findTenantByDomain(host: string) {
-    const normalizedHost = this.normalizeHost(host);
+    const normalizedHost = normalizeTenantHost(host);
     if (!normalizedHost) return null;
 
     const tenants = await this.prisma.tenant.findMany({
@@ -156,89 +160,18 @@ export class RemoteSmsAuthGuard implements CanActivate {
       },
     });
 
-    let best: { row: TenantHostRow; score: number } | null = null;
-    for (const row of tenants) {
-      const score = this.scoreHostMatch(row, normalizedHost);
-      if (score <= 0) continue;
-      if (!best || score > best.score) {
-        best = { row, score };
-      }
-    }
-    if (!best) return null;
+    const hit = findTenantForHost(tenants as TenantHostRow[], normalizedHost);
+    if (!hit) return null;
 
     return {
-      id: best.row.id,
-      nameFa: best.row.nameFa,
-      domain: best.row.domain,
-      product: best.row.product,
-      isActive: best.row.isActive,
+      id: hit.id,
+      nameFa: hit.nameFa,
+      domain: hit.domain,
+      product: hit.product,
+      isActive: hit.isActive,
     };
   }
 
-  /**
-   * امتیاز بالاتر = هویت دقیق‌تر نسخه.
-   * nodeServer ضعیف است چون چند نسخه ممکن است یک API مشترک داشته باشند.
-   */
-  private scoreHostMatch(tenant: TenantHostRow, host: string): number {
-    const hostNoWww = host.replace(/^www\./, '');
-    const eq = (raw?: string | null) => {
-      const normalized = this.normalizeHost(raw);
-      if (!normalized) return false;
-      return (
-        normalized === host || normalized.replace(/^www\./, '') === hostNoWww
-      );
-    };
-
-    if (eq(tenant.domain)) return 100;
-
-    for (const alias of this.readDomains(tenant.domains)) {
-      if (eq(alias)) return 90;
-    }
-
-    if (eq(tenant.appUrl)) return 80;
-
-    // adminUrl گاهی موبایل است؛ فقط اگر شبیه میزبان باشد
-    if (this.looksLikeHostname(tenant.adminUrl) && eq(tenant.adminUrl)) {
-      return 50;
-    }
-
-    if (eq(tenant.nodeServer)) return 10;
-
-    return 0;
-  }
-
-  private looksLikeHostname(value?: string | null) {
-    const normalized = this.normalizeHost(value);
-    if (!normalized || !normalized.includes('.')) return false;
-    if (/^\d+(\.\d+)*$/.test(normalized)) return false;
-    if (/^09\d{9}$/.test(normalized)) return false;
-    return true;
-  }
-
-  private readDomains(raw: unknown): string[] {
-    if (!raw) return [];
-    if (Array.isArray(raw)) return raw.map(String);
-    if (typeof raw === 'string') {
-      try {
-        const parsed = JSON.parse(raw);
-        return Array.isArray(parsed) ? parsed.map(String) : [];
-      } catch {
-        return [];
-      }
-    }
-    return [];
-  }
-
-  private normalizeHost(value?: string | null) {
-    if (!value) return '';
-    return String(value)
-      .trim()
-      .toLowerCase()
-      .replace(/^https?:\/\//, '')
-      .split('/')[0]
-      .split(':')[0];
-  }
-
   private equalHex(a: string, b: string) {
     try {
       const left = Buffer.from(String(a).toLowerCase(), 'utf8');
diff --git a/src/auth/tenant-host.util.ts b/src/auth/tenant-host.util.ts
new file mode 100644
index 0000000..96ac3c4
--- /dev/null
+++ b/src/auth/tenant-host.util.ts
@@ -0,0 +1,101 @@
+export type TenantHostFields = {
+  domain?: string | null;
+  domains?: unknown;
+  adminUrl?: string | null;
+  appUrl?: string | null;
+  nodeServer?: string | null;
+};
+
+export function normalizeTenantHost(value?: string | null): string {
+  if (!value) return '';
+  return String(value)
+    .trim()
+    .toLowerCase()
+    .replace(/^https?:\/\//, '')
+    .split('/')[0]
+    .split(':')[0]
+    .replace(/\.$/, '');
+}
+
+/** aliases JSON array, object map, CSV, or a single host/URL */
+export function readHostList(raw: unknown): string[] {
+  if (!raw) return [];
+  if (Array.isArray(raw)) return raw.flatMap((item) => readHostList(item));
+  if (typeof raw === 'object') {
+    return Object.values(raw as Record<string, unknown>).flatMap(readHostList);
+  }
+  const text = String(raw).trim();
+  if (!text) return [];
+  if (
+    (text.startsWith('[') && text.endsWith(']')) ||
+    (text.startsWith('{') && text.endsWith('}'))
+  ) {
+    try {
+      return readHostList(JSON.parse(text));
+    } catch {
+      /* fall through */
+    }
+  }
+  return text
+    .split(/[\s,;]+/)
+    .map((item) => item.trim())
+    .filter(Boolean);
+}
+
+function looksLikeHostname(value: string): boolean {
+  if (!value.includes('.')) return false;
+  if (/^\d+(\.\d+)*$/.test(value)) return false;
+  if (/^09\d{9}$/.test(value)) return false;
+  return true;
+}
+
+function hostsEqual(left: string, right: string): boolean {
+  if (!left || !right) return false;
+  if (left === right) return true;
+  return left.replace(/^www\./, '') === right.replace(/^www\./, '');
+}
+
+/**
+ * Same identity as GET /get_user?domain= — primary domain, then aliases,
+ * then app/admin/node URLs so HMAC and get_user cannot disagree.
+ */
+export function scoreTenantHost(
+  tenant: TenantHostFields,
+  hostRaw: string,
+): number {
+  const host = normalizeTenantHost(hostRaw);
+  if (!host) return 0;
+  const eq = (raw?: string | null) =>
+    hostsEqual(normalizeTenantHost(raw), host);
+
+  if (eq(tenant.domain)) return 100;
+  for (const alias of readHostList(tenant.domains)) {
+    if (eq(alias)) return 90;
+  }
+  for (const value of readHostList(tenant.appUrl)) {
+    if (eq(value)) return 80;
+  }
+  for (const value of readHostList(tenant.adminUrl)) {
+    const normalized = normalizeTenantHost(value);
+    if (looksLikeHostname(normalized) && hostsEqual(normalized, host)) {
+      return 50;
+    }
+  }
+  for (const value of readHostList(tenant.nodeServer)) {
+    if (eq(value)) return 10;
+  }
+  return 0;
+}
+
+export function findTenantForHost<T extends TenantHostFields>(
+  tenants: T[],
+  host: string,
+): T | undefined {
+  let best: { row: T; score: number } | undefined;
+  for (const row of tenants) {
+    const score = scoreTenantHost(row, host);
+    if (score <= 0) continue;
+    if (!best || score > best.score) best = { row, score };
+  }
+  return best?.row;
+}
diff --git a/src/get-user/get-user.service.ts b/src/get-user/get-user.service.ts
index 77ce18e..7ab890b 100644
--- a/src/get-user/get-user.service.ts
+++ b/src/get-user/get-user.service.ts
@@ -4,6 +4,10 @@ import { PrismaService } from '../prisma/prisma.service';
 import { applyKhanegiNavSample } from './khanegi-nav-sample';
 import { rewriteLegacyUploadUrl } from '../uploads/uploads.util';
 import { PLUGIN_STORE_SETTING_KEY } from '../program-settings/runtime-setting-keys';
+import {
+  findTenantForHost as matchTenantForHost,
+  normalizeTenantHost,
+} from '../auth/tenant-host.util';
 
 type UiSetting = { key: string; value: string };
 
@@ -28,7 +32,7 @@ export class GetUserService {
   constructor(private readonly prisma: PrismaService) {}
 
   async resolveByHost(hostHeader?: string, domainQuery?: string) {
-    const host = this.normalizeHost(domainQuery || hostHeader || '');
+    const host = normalizeTenantHost(domainQuery || hostHeader || '');
     if (!host) {
       throw new NotFoundException('domain required');
     }
@@ -374,75 +378,12 @@ export class GetUserService {
   }
 
   /**
-   * اول دامنهٔ اصلی (Tenant.domain)، بعد aliases داخل domains[].
-   * اگر چند نسخه یک دامنه را داشته باشند، نسخهٔ primary برنده است.
+   * همان منطق HMAC ریموت: دامنهٔ اصلی، aliases، بعد admin/app/node URL.
    */
-  private findTenantForHost<
-    T extends {
-      domain: string;
-      domains: unknown;
-    },
-  >(tenants: T[], host: string): T | undefined {
-    const normalizedHost = this.normalizeHost(host);
-    const hostNoWww = normalizedHost.replace(/^www\./, '');
-
-    const primary = tenants.find((item) => {
-      const d = this.normalizeHost(item.domain);
-      return d === normalizedHost || d.replace(/^www\./, '') === hostNoWww;
-    });
-    if (primary) return primary;
-
-    return tenants.find((item) => this.matchesAliasHost(item, normalizedHost));
-  }
-
-  private matchesAliasHost(
-    tenant: {
-      domain: string;
-      domains: unknown;
-    },
+  private findTenantForHost<T extends { domain: string; domains: unknown }>(
+    tenants: T[],
     host: string,
-  ) {
-    const hostNoWww = host.replace(/^www\./, '');
-    for (const value of this.readDomains(tenant.domains)) {
-      const normalized = this.normalizeHost(value);
-      if (!normalized) continue;
-      if (normalized === host || normalized.replace(/^www\./, '') === hostNoWww) {
-        return true;
-      }
-    }
-    return false;
-  }
-
-  private matchesHost(
-    tenant: {
-      domain: string;
-      domains: unknown;
-    },
-    host: string,
-  ) {
-    return Boolean(this.findTenantForHost([tenant], host));
-  }
-
-  private readDomains(raw: unknown): string[] {
-    if (!raw) return [];
-    if (Array.isArray(raw)) return raw.map(String);
-    if (typeof raw === 'string') {
-      try {
-        const parsed = JSON.parse(raw);
-        return Array.isArray(parsed) ? parsed.map(String) : [];
-      } catch {
-        return [];
-      }
-    }
-    return [];
-  }
-
-  private normalizeHost(value: string) {
-    return value
-      .trim()
-      .toLowerCase()
-      .replace(/^https?:\/\//, '')
-      .split('/')[0]
-      .split(':')[0];
+  ): T | undefined {
+    return matchTenantForHost(tenants, host);
   }
 }