diff --git a/.forgejo/workflows/deploy.yaml b/.forgejo/workflows/deploy.yaml
index eacaa88..2bc2ed3 100644
--- a/.forgejo/workflows/deploy.yaml
+++ b/.forgejo/workflows/deploy.yaml
@@ -139,7 +139,7 @@ jobs:
             S3_SECRET_KEY=${ASXPIO_S3_SECRET_KEY}
             LTC_ADDRESS=${LTC_ADDRESS}
             CRYPTO_ADDRESSES=${CRYPTO_ADDRESSES}
-            BINGO_HOST=bingo.asxp.io
+            BINGO_HOST=datacenterbingo.xyz
             EOF
             chmod 600 /opt/asxpio/.env
 
diff --git a/CLAUDE.md b/CLAUDE.md
index af6d8e3..9d807d5 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -117,7 +117,7 @@ Admin pages use a shared dark palette extended in `public/style.css` (search for
 
 ## Datacenter bingo
 
-A second public site served from the **same process** on `BINGO_HOST` (`bingo.asxp.io`, non-secret config in `deploy.yaml` → `.env` → Traefik router `asxpio-bingo` via compose interpolation). `config.ru` dispatches by Host: `BINGO_HOST` → `BingoWeb` (`bingo_web.rb`), everything else → `AsxpioWeb`. Unset `BINGO_HOST` = bingo unreachable.
+A second public site served from the **same process** on `BINGO_HOST` (`datacenterbingo.xyz`, `www.` redirects to it; non-secret config in `deploy.yaml` → `.env` → Traefik router `asxpio-bingo` via compose interpolation). `config.ru` dispatches by Host: `BINGO_HOST` → `BingoWeb` (`bingo_web.rb`), everything else → `AsxpioWeb`. Unset `BINGO_HOST` = bingo unreachable.
 
 - 5×5 card of the 25 largest Russian datacenters; a cell is crossed out when an incident (with a public source) is recorded. Rows/columns/diagonals → BINGO banner.
 - Locales `ru` / `en` / `uk` at `/ru`, `/en`, `/uk`; `/` redirects by `Accept-Language` (fallback `en`). Per-locale DB columns (`name_*`, `city_*`, `title_*`); `ru` is required, others fall back to it. UI strings in `Bingo::T` (`lib/bingo.rb`).
diff --git a/config.ru b/config.ru
index 38de138..3f1c1f3 100644
--- a/config.ru
+++ b/config.ru
@@ -8,6 +8,10 @@ bingo      = BingoWeb.new
 bingo_host = ENV['BINGO_HOST']
 
 run lambda { |env|
-  host = Rack::Request.new(env).host
-  (bingo_host && host == bingo_host ? bingo : asxpio).call(env)
+  req = Rack::Request.new(env)
+  if bingo_host && req.host == "www.#{bingo_host}"
+    [301, { 'location' => "https://#{bingo_host}#{req.fullpath}" }, []]
+  else
+    (bingo_host && req.host == bingo_host ? bingo : asxpio).call(env)
+  end
 }
diff --git a/docker-compose.yml b/docker-compose.yml
index 34e2d9a..9a22d6a 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -20,7 +20,7 @@ services:
       - "traefik.http.services.asxpio.loadbalancer.server.port=3000"
       # Datacenter bingo: same container, routed by Host in config.ru.
       # BINGO_HOST is interpolated from /opt/asxpio/.env (written by deploy).
-      - "traefik.http.routers.asxpio-bingo.rule=Host(`${BINGO_HOST}`)"
+      - "traefik.http.routers.asxpio-bingo.rule=Host(`${BINGO_HOST}`) || Host(`www.${BINGO_HOST}`)"
       - "traefik.http.routers.asxpio-bingo.entrypoints=websecure"
       - "traefik.http.routers.asxpio-bingo.tls=true"
       - "traefik.http.routers.asxpio-bingo.tls.certresolver=letsencrypt"