diff --git a/database.py b/database.py
index 3327438..1e8c4da 100755
--- a/database.py
+++ b/database.py
@@ -23,7 +23,7 @@ DbValue = typing.Union[None, int, float, str, bytes]
 
 
 class Database():
-    VERSION = 4
+    VERSION = 5
     PATH = "blocking.db"
 
     def open(self) -> None:
@@ -250,6 +250,24 @@ class Database():
             else:
                 yield val
 
+    def count_rules(self,
+                    first_party_only: bool = False,
+                    ) -> str:
+        counts: typing.List[str] = list()
+        cursor = self.conn.cursor()
+        for table in ['asn', 'ip4network', 'ip4address', 'zone', 'hostname']:
+            command = f'SELECT count(*) FROM rules ' \
+                f'INNER JOIN {table} ON rules.id = {table}.entry ' \
+                'WHERE rules.level = 0'
+            if first_party_only:
+                command += ' AND first_party=1'
+            cursor.execute(command)
+            count, = cursor.fetchone()
+            if count > 0:
+                counts.append(f'{table}: {count}')
+
+        return ', '.join(counts)
+
     def get_domain(self, domain: str) -> typing.Iterable[int]:
         self.enter_step('get_domain_prepare')
         domain_prep = self.pack_hostname(domain)
diff --git a/database_schema.sql b/database_schema.sql
index a61f7f2..3116a09 100644
--- a/database_schema.sql
+++ b/database_schema.sql
@@ -11,6 +11,8 @@ CREATE TABLE rules (
     FOREIGN KEY (source) REFERENCES rules(id) ON DELETE CASCADE
 );
 CREATE INDEX rules_source ON rules (source); -- for references recounting
+CREATE INDEX rules_updated ON rules (updated); -- for pruning
+CREATE INDEX rules_level_firstparty ON rules (level, first_party); -- for counting rules
 
 CREATE TABLE asn (
     val INTEGER PRIMARY KEY,
diff --git a/export.py b/export.py
index 49051c9..886582c 100755
--- a/export.py
+++ b/export.py
@@ -22,15 +22,28 @@ if __name__ == '__main__':
     parser.add_argument(
         '-x', '--explain', action='store_true',
         help="TODO")
+    parser.add_argument(
+        '-r', '--rules', action='store_true',
+        help="TODO")
+    parser.add_argument(
+        '-c', '--count', action='store_true',
+        help="TODO")
     args = parser.parse_args()
 
     DB = database.Database()
 
-    for domain in DB.export(
-        first_party_only=args.first_party,
-        end_chain_only=args.end_chain,
-        explain=args.explain,
-    ):
-        print(domain, file=args.output)
+    if args.rules:
+        if not args.count:
+            raise NotImplementedError
+        print(DB.count_rules(first_party_only=args.first_party))
+    else:
+        if args.count:
+            raise NotImplementedError
+        for domain in DB.export(
+            first_party_only=args.first_party,
+            end_chain_only=args.end_chain,
+            explain=args.explain,
+        ):
+            print(domain, file=args.output)
 
     DB.close()
diff --git a/filter_subdomains.sh b/filter_subdomains.sh
index 516efae..d4b90ae 100755
--- a/filter_subdomains.sh
+++ b/filter_subdomains.sh
@@ -4,6 +4,9 @@ function log() {
     echo -e "\033[33m$@\033[0m"
 }
 
+log "Pruning old data…"
+./database.py --prune
+
 log "Recounting references…"
 ./database.py --references
 
@@ -14,6 +17,8 @@ log "Exporting lists…"
 ./export.py --end-chain --output dist/multiparty-only-trackers.txt
 
 log "Generating hosts lists…"
+./export.py --rules --count --first-party > temp/count_rules_firstparty.txt
+./export.py --rules --count > temp/count_rules_multiparty.txt
 function generate_hosts {
     basename="$1"
     description="$2"
@@ -39,15 +44,16 @@ function generate_hosts {
         echo "#"
         echo "# Generation date: $(date -Isec)"
         echo "# Generation software: eulaurarien $(git describe --tags)"
-        echo "# Number of source websites: TODO"
-        echo "# Number of source subdomains: TODO"
+        echo "# Number of source websites: $(wc -l temp/all_websites.list | cut -d' ' -f1)"
+        echo "# Number of source subdomains: $(wc -l temp/all_subdomains.list | cut -d' ' -f1)"
+        echo "# Number of source DNS records: ~2M + $(wc -l temp/all_resolved.json | cut -d' ' -f1)"
         echo "#"
-        echo "# Number of known first-party trackers: TODO"
-        echo "# Number of first-party subdomains: $(wc -l dist/firstparty-trackers.txt | cut -d' ' -f1)"
+        echo "# Known first-party trackers: $(cat temp/count_rules_firstparty.txt)"
+        echo "# Number of first-party hostnames: $(wc -l dist/firstparty-trackers.txt | cut -d' ' -f1)"
         echo "# … excluding redirected: $(wc -l dist/firstparty-only-trackers.txt | cut -d' ' -f1)"
         echo "#"
-        echo "# Number of known multi-party trackers: TODO"
-        echo "# Number of multi-party subdomains: $(wc -l dist/multiparty-trackers.txt | cut -d' ' -f1)"
+        echo "# Known multi-party trackers: $(cat temp/count_rules_multiparty.txt)"
+        echo "# Number of multi-party hostnames: $(wc -l dist/multiparty-trackers.txt | cut -d' ' -f1)"
         echo "# … excluding redirected: $(wc -l dist/multiparty-only-trackers.txt | cut -d' ' -f1)"
         echo
         sed 's|^|0.0.0.0 |' "dist/$basename.txt"
diff --git a/new_workflow.sh b/new_workflow.sh
index bc2a78b..c98cd46 100755
--- a/new_workflow.sh
+++ b/new_workflow.sh
@@ -4,9 +4,7 @@ function log() {
     echo -e "\033[33m$@\033[0m"
 }
 
-log "Preparing database…"
-./database.py --expire
-
+./fetch_resources.sh
 ./import_rules.sh
 
 # TODO Fetch 'em