diff --git a/changelog.d/stats-peers-from-instances.change b/changelog.d/stats-peers-from-instances.change
index c493b4550..a3dfe2e0c 100644
--- a/changelog.d/stats-peers-from-instances.change
+++ b/changelog.d/stats-peers-from-instances.change
@@ -1 +1 @@
-Read the peer list from the instances table and update instance stats every 5 minutes instead of every minute; the old peers query was one of the most expensive regular queries
+Read the peer list from the instances table (hosts of remote actors, without our own host) and update instance stats every 5 minutes; the old peers query scanned all remote users every minute
diff --git a/lib/pleroma/stats.ex b/lib/pleroma/stats.ex
index 328aa110a..079f6f7dd 100644
--- a/lib/pleroma/stats.ex
+++ b/lib/pleroma/stats.ex
@@ -67,7 +67,10 @@ defmodule Pleroma.Stats do
   def calculate_stat_data do
     # Hosts are unique in instances, and remote users add theirs. Scanning
     # all remote users for their domains was one of the costliest queries.
-    peers = Repo.all(from(i in Instance, select: i.host))
+    # Favicon lookups for local accounts can add our own host, so skip it.
+    peers =
+      from(i in Instance, where: i.host != ^local_host(), select: i.host)
+      |> Repo.all()
 
     domain_count = Enum.count(peers)
 
@@ -93,6 +96,9 @@ defmodule Pleroma.Stats do
     }
   end
 
+  # Read from the config: this also runs before the endpoint has started.
+  defp local_host, do: Pleroma.Config.get([Pleroma.Web.Endpoint, :url, :host])
+
   @spec get_status_visibility_count(String.t() | nil) :: map()
   def get_status_visibility_count(instance \\ nil) do
     if is_nil(instance) do
diff --git a/priv/repo/migrations/20261028000000_backfill_instances_from_users.exs b/priv/repo/migrations/20261028000000_backfill_instances_from_users.exs
index 13d805c30..88dfe9ec5 100644
--- a/priv/repo/migrations/20261028000000_backfill_instances_from_users.exs
+++ b/priv/repo/migrations/20261028000000_backfill_instances_from_users.exs
@@ -13,7 +13,8 @@ defmodule Pleroma.Repo.Migrations.BackfillInstancesFromUsers do
       INSERT INTO instances (host, inserted_at, updated_at)
       SELECT DISTINCT host, now(), now()
       FROM (
-        SELECT substring(ap_id from '^[A-Za-z][A-Za-z0-9+.-]*://([^/:?#]+)') AS host
+        -- Skips userinfo; IPv6 literals give NULL and are left out.
+        SELECT substring(ap_id from '^[A-Za-z][A-Za-z0-9+.-]*://(?:[^/?#@]*@)?([^/:?#\\[]+)') AS host
         FROM users
         WHERE local = false AND ap_id IS NOT NULL
       ) AS hosts
diff --git a/test/pleroma/repo/migrations/backfill_instances_from_users_test.exs b/test/pleroma/repo/migrations/backfill_instances_from_users_test.exs
index 733c6644b..811e336bd 100644
--- a/test/pleroma/repo/migrations/backfill_instances_from_users_test.exs
+++ b/test/pleroma/repo/migrations/backfill_instances_from_users_test.exs
@@ -19,12 +19,14 @@ defmodule Pleroma.Repo.Migrations.BackfillInstancesFromUsersTest do
     insert(:user, local: false, ap_id: "https://new.example/users/a")
     insert(:user, local: false, ap_id: "https://new.example/users/b")
     insert(:user, local: false, ap_id: "https://ported.example:8443/users/c")
+    insert(:user, local: false, ap_id: "https://user@userinfo.example/users/d")
+    insert(:user, local: false, ap_id: "https://[2001:db8::1]/users/e")
     insert(:user, local: true)
 
     migration.up()
 
     hosts = Instance |> Repo.all() |> Enum.map(& &1.host) |> Enum.sort()
-    assert hosts == ["known.example", "new.example", "ported.example"]
+    assert hosts == ["known.example", "new.example", "ported.example", "userinfo.example"]
 
     assert %{unreachable_since: ^unreachable_since} = Repo.get_by(Instance, host: "known.example")
   end
diff --git a/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs b/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs
index 404d276db..f9d42d981 100644
--- a/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs
+++ b/test/pleroma/web/mastodon_api/controllers/instance_controller_test.exs
@@ -86,6 +86,8 @@ defmodule Pleroma.Web.MastodonAPI.InstanceControllerTest do
     # Peers come from the instances table, which remote users add to.
     insert(:instance, host: "peer1.com")
     insert(:instance, host: "peer2.com")
+    # Favicon lookups for local accounts can add our own host.
+    insert(:instance, host: Pleroma.Web.Endpoint.host())
 
     Pleroma.Stats.force_update()