diff --git a/domains/_vercel.grassist.json b/domains/_vercel.grassist.json
new file mode 100644
index 0000000000..930312c412
--- /dev/null
+++ b/domains/_vercel.grassist.json
@@ -0,0 +1,14 @@
+{
+  "owner": {
+    "username": "mynameisgrass",
+    "email": "k26longnh1@ntthnue.edu.vn"
+  },
+  "records": {
+    "TXT": [
+      "vc-domain-verify=grassist.is-a.dev,4fc1f183d329a0584d9c",
+      "vc-domain-verify=casio.grassist.is-a.dev,59f8f1509ab12ba4b803",
+      "vc-domain-verify=calc.grassist.is-a.dev,2c108a72892cdddbacfe",
+      "vc-domain-verify=casioguide.grassist.is-a.dev,eeb161c4d9a31532edfc"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/domains/calc.grassist.json b/domains/calc.grassist.json
new file mode 100644
index 0000000000..c833eefc7a
--- /dev/null
+++ b/domains/calc.grassist.json
@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mynameisgrass",
+    "email": "k26longnh1@ntthnue.edu.vn"
+  },
+  "records": {
+    "CNAME": "5c3dc01d848c8447.vercel-dns-017.com"
+  }
+}
\ No newline at end of file
diff --git a/domains/casio.grassist.json b/domains/casio.grassist.json
new file mode 100644
index 0000000000..a95c486a8a
--- /dev/null
+++ b/domains/casio.grassist.json
@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mynameisgrass",
+    "email": "k26longnh1@ntthnue.edu.vn"
+  },
+  "records": {
+    "CNAME": "049e519c7c6aca6c.vercel-dns-017.com"
+  }
+}
\ No newline at end of file
diff --git a/domains/casioguide.grassist.json b/domains/casioguide.grassist.json
new file mode 100644
index 0000000000..d4f839dd68
--- /dev/null
+++ b/domains/casioguide.grassist.json
@@ -0,0 +1,9 @@
+{
+  "owner": {
+    "username": "mynameisgrass",
+    "email": "k26longnh1@ntthnue.edu.vn"
+  },
+  "records": {
+    "CNAME": "50dc26f1c6c9cb34.vercel-dns-017.com"
+  }
+}
\ No newline at end of file
diff --git a/domains/grassist.json b/domains/grassist.json
new file mode 100644
index 0000000000..3d780d3191
--- /dev/null
+++ b/domains/grassist.json
@@ -0,0 +1,11 @@
+{
+  "owner": {
+    "username": "mynameisgrass",
+    "email": "k26longnh1@ntthnue.edu.vn"
+  },
+  "records": {
+    "A": [
+      "216.198.79.1"
+    ]
+  }
+}
\ No newline at end of file