diff --git a/.github/addrcheck.md b/.github/addrcheck.md
new file mode 100644
index 000000000..94a4f023e
--- /dev/null
+++ b/.github/addrcheck.md
@@ -0,0 +1,10 @@
+---
+title: Missing address entries
+labels: ['ci', '@all.json']
+---
+
+cc @polkadot-js/notifications
+
+Additional entries for addresses have been detected.
+
+Check the nightly cron output or run `yarn phishing:addrcheck` locally. The output as found from the test includes:
diff --git a/.github/crosscheck.md b/.github/crosscheck.md
index d8edf0721..2ddef7d66 100644
--- a/.github/crosscheck.md
+++ b/.github/crosscheck.md
@@ -1,5 +1,5 @@
 ---
-title: Phishing missing cross-check entries
+title: Missing cross-check entries
 labels: ['ci', '@all.json']
 ---
 
diff --git a/.github/workflows/crosscheck.yml b/.github/workflows/crosscheck.yml
index c44e2bd5c..163bc832b 100644
--- a/.github/workflows/crosscheck.yml
+++ b/.github/workflows/crosscheck.yml
@@ -14,7 +14,6 @@ jobs:
       run: |
         yarn install --immutable | grep -v 'YN0013'
         yarn phishing:crosscheck
-
     - name: issue
       if: ${{ failure() }}
       uses: JasonEtco/create-an-issue@v2
@@ -22,3 +21,21 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GH_PAT }}
       with:
         filename: .github/crosscheck.md
+
+  addrcheck:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: check
+      env:
+        CI_LOG: 123
+      run: |
+        yarn install --immutable | grep -v 'YN0013'
+        yarn phishing:addrcheck
+    - name: issue
+      if: ${{ failure() }}
+      uses: JasonEtco/create-an-issue@v2
+      env:
+        GITHUB_TOKEN: ${{ secrets.GH_PAT }}
+      with:
+        filename: .github/addrcheck.md
diff --git a/package.json b/package.json
index 597ae2b6b..1a4ea287d 100644
--- a/package.json
+++ b/package.json
@@ -15,9 +15,10 @@
     "build:release": "polkadot-ci-ghact-build --skip-beta",
     "lint": "polkadot-dev-run-lint",
     "clean": "polkadot-dev-clean-build",
+    "phishing:addrcheck": "polkadot-dev-run-test packages/phishing/src/addrcheck",
     "phishing:crosscheck": "polkadot-dev-run-test packages/phishing/src/crosscheck",
     "postinstall": "polkadot-dev-yarn-only",
-    "test": "polkadot-dev-run-test --coverage --runInBand --testPathIgnorePatterns crosscheck"
+    "test": "polkadot-dev-run-test --coverage --runInBand --testPathIgnorePatterns addrcheck --testPathIgnorePatterns crosscheck"
   },
   "devDependencies": {
     "@babel/core": "^7.12.10",
diff --git a/packages/phishing/src/addrcheck.spec.ts b/packages/phishing/src/addrcheck.spec.ts
new file mode 100644
index 000000000..76a31c05a
--- /dev/null
+++ b/packages/phishing/src/addrcheck.spec.ts
@@ -0,0 +1,55 @@
+// Copyright 2020-2021 @polkadot/phishing authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import fs from 'fs';
+
+import { fetch } from '@polkadot/x-fetch';
+
+import { retrieveAddrList } from '.';
+
+function assertAndLog (check: boolean, error: string): void {
+  if (!check) {
+    process.env.CI_LOG && fs.appendFileSync('./.github/addrcheck.md', `
+
+${error}
+`);
+
+    throw new Error(error);
+  }
+}
+
+function delayLoop (): Promise<void> {
+  return new Promise((resolve): void => {
+    setTimeout(() => resolve(), 1500);
+  });
+}
+
+describe('addrcheck', (): void => {
+  let ours: Record<string, string[]>;
+
+  beforeAll(async (): Promise<void> => {
+    jest.setTimeout(120000);
+    ours = await retrieveAddrList();
+  });
+
+  it('has all entries from polkadot.center', async (): Promise<void> => {
+    const found: string[] = [];
+
+    for (let i = 0; i < 25; i++) {
+      const result = await (await fetch('https://polkadot.center/get_wallet.php')).json() as Record<string, string>;
+      const wallet = result.wallet.replace('\r', '');
+
+      if (!found.includes(wallet)) {
+        found.push(wallet);
+      }
+
+      await delayLoop();
+    }
+
+    console.log('polkadot.center', JSON.stringify(found));
+
+    const missing = found.filter((a) => !ours['polkadot.center'].includes(a));
+
+    assertAndLog(missing.length === 0, `Missing entries found for polkadot.center: ${JSON.stringify(missing)}`);
+  });
+});
diff --git a/packages/phishing/src/crosscheck.spec.ts b/packages/phishing/src/crosscheck.spec.ts
index 16b8ded8f..874b91593 100644
--- a/packages/phishing/src/crosscheck.spec.ts
+++ b/packages/phishing/src/crosscheck.spec.ts
@@ -40,6 +40,7 @@ describe('crosscheck', (): void => {
   let ours: string[];
 
   beforeAll(async (): Promise<void> => {
+    jest.setTimeout(120000);
     ours = (await retrieveHostList()).deny;
   });