diff --git a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/Typealiases.kt b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/Typealiases.kt
index 752baa8..72e0d78 100644
--- a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/Typealiases.kt
+++ b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/Typealiases.kt
@@ -4,4 +4,6 @@ public typealias URL = String
 
 public typealias HTML = String
 
-public typealias Language = String
\ No newline at end of file
+public typealias Language = String
+
+public typealias SHA256 = String
\ No newline at end of file
diff --git a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/CanonicalEmailBlock.kt b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/CanonicalEmailBlock.kt
new file mode 100644
index 0000000..c3698bf
--- /dev/null
+++ b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/CanonicalEmailBlock.kt
@@ -0,0 +1,17 @@
+package xyz.wingio.fediapi.software.mastodon.model.admin
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+import xyz.wingio.fediapi.SHA256
+
+/**
+ * Represents a canonical email block (hashed).
+ *
+ * @param id The ID of the email block in the database.
+ * @param canonicalEmailHash The SHA256 hash of the canonical email address.
+ */
+@Serializable
+public data class CanonicalEmailBlock(
+    val id: String,
+    @SerialName("canonical_email_hash") val canonicalEmailHash: SHA256
+)
diff --git a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/Cohort.kt b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/Cohort.kt
new file mode 100644
index 0000000..c63a086
--- /dev/null
+++ b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/Cohort.kt
@@ -0,0 +1,48 @@
+package xyz.wingio.fediapi.software.mastodon.model.admin
+
+import kotlinx.datetime.Instant
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * Represents a retention metric.
+ *
+ * @param period The timestamp for the start of the period, at midnight.
+ * @param frequency The size of the bucket for the returned data.
+ * @param data Retention data for users who registered during the given period.
+ */
+@Serializable
+public data class Cohort(
+    val period: Instant,
+    val frequency: Frequency,
+    val data: List<Data>
+) {
+
+    @Serializable
+    public enum class Frequency {
+        /**
+         * Daily buckets
+         */
+        @SerialName("day") DAILY,
+
+        /**
+         * Monthly buckets
+         */
+        @SerialName("month") MONTHLY,
+    }
+
+    /**
+     * Data for users who registered during a given period.
+     *
+     * @param date The timestamp for the start of the bucket, at midnight.
+     * @param rate The percentage rate of users who registered in the specified [period] and were active for the given [date] bucket.
+     * @param value How many users registered in the specified [period] and were active for the given [date] bucket.
+     */
+    @Serializable
+    public data class Data(
+        val date: Instant,
+        val rate: Float,
+        val value: Int
+    )
+
+}
\ No newline at end of file
diff --git a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/Dimension.kt b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/Dimension.kt
new file mode 100644
index 0000000..64cf3b2
--- /dev/null
+++ b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/Dimension.kt
@@ -0,0 +1,36 @@
+package xyz.wingio.fediapi.software.mastodon.model.admin
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * Represents qualitative data about the server.
+ *
+ * @param key The unique keystring for the requested dimension.
+ * @param data The data available for the requested dimension.
+ */
+@Serializable
+public data class Dimension(
+    val key: String,
+    val data: List<Data>
+) {
+
+    /**
+     * Data available for a given dimension
+     *
+     * @param key The unique keystring for this data item.
+     * @param humanKey A human-readable key for this data item.
+     * @param value The value for this data item.
+     * @param unit The units associated with this data item’s value, if applicable.
+     * @param humanValue A human-readable formatted value for this data item.
+     */
+    @Serializable
+    public data class Data(
+        val key: String,
+        @SerialName("human_key") val humanKey: String,
+        val value: String,
+        val unit: String? = null,
+        @SerialName("human_value") val humanValue: String? = null
+    )
+
+}
diff --git a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/DomainAllow.kt b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/DomainAllow.kt
new file mode 100644
index 0000000..bb36ed9
--- /dev/null
+++ b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/DomainAllow.kt
@@ -0,0 +1,19 @@
+package xyz.wingio.fediapi.software.mastodon.model.admin
+
+import kotlinx.datetime.Instant
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * Represents a domain allowed to federate.
+ *
+ * @param id The ID of the [DomainAllow] in the database.
+ * @param domain The domain that is allowed to federate.
+ * @param createdAt When the domain was allowed to federate.
+ */
+@Serializable
+public data class DomainAllow(
+    val id: String,
+    val domain: String,
+    @SerialName("created_at") val createdAt: Instant
+)
\ No newline at end of file
diff --git a/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/DomainBlock.kt b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/DomainBlock.kt
new file mode 100644
index 0000000..0098ff3
--- /dev/null
+++ b/fediapi/src/commonMain/kotlin/xyz/wingio/fediapi/software/mastodon/model/admin/DomainBlock.kt
@@ -0,0 +1,50 @@
+package xyz.wingio.fediapi.software.mastodon.model.admin
+
+import kotlinx.datetime.Instant
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+/**
+ * Represents a domain limited from federating.
+ *
+ * @param id The ID of the [DomainBlock] in the database.
+ * @param domain The domain that is not allowed to federate.
+ * @param createdAt When the domain was blocked from federating.
+ * @param severity The policy to be applied by this domain block.
+ * @param rejectMedia Whether to reject media attachments from this domain
+ * @param rejectReports Whether to reject reports from this domain
+ * @param privateComment Reason for why this domain is blocked
+ * @param publicComment Publicly shown reason for this block
+ * @param obfuscate Whether to obfuscate public displays of this domain block
+ */
+@Serializable
+public data class DomainBlock(
+    val id: String,
+    val domain: String,
+    @SerialName("created_at") val createdAt: Instant,
+    val severity: Severity,
+    @SerialName("reject_media") val rejectMedia: Boolean,
+    @SerialName("reject_reports") val rejectReports: Boolean,
+    @SerialName("private_comment") val privateComment: String?,
+    @SerialName("public_comment") val publicComment: String?,
+    val obfuscate: Boolean
+) {
+
+    public enum class Severity {
+        /**
+         * Account statuses from this domain will be hidden by default
+         */
+        @SerialName("silence") SILENCE,
+
+        /**
+         * All incoming data from this domain will be rejected
+         */
+        @SerialName("suspend") SUSPEND,
+
+        /**
+         * Do nothing. Allows for rejecting media or reports
+         */
+        @SerialName("noop") NOOP
+    }
+
+}