diff --git a/src/netcheck/exporter.py b/src/netcheck/exporter.py
index 898d81b..a75453f 100644
--- a/src/netcheck/exporter.py
+++ b/src/netcheck/exporter.py
@@ -89,8 +89,9 @@ def egress_asn(report: dict[str, Any]) -> str | None:
 
 
 def write_report(report: dict[str, Any], markdown: str, logs_dir: Path) -> tuple[Path, Path]:
-    started = (report.get("meta") or {}).get("started_at", "")
-    asn = egress_asn(report)
+    meta = report.get("meta") or {}
+    started = meta.get("started_at", "")
+    asn = meta.get("target") or egress_asn(report)
     base = Path(logs_dir)
     json_path = atomic_write(base / report_filename(asn, started, "json"), dump_json(report))
     md_path = atomic_write(base / report_filename(asn, started, "md"), markdown)
diff --git a/tests/test_exporter.py b/tests/test_exporter.py
index f8df2eb..1e6883d 100644
--- a/tests/test_exporter.py
+++ b/tests/test_exporter.py
@@ -193,6 +193,13 @@ def test_egress_asn_is_read_out_of_the_assembled_report():
     assert egress_asn({}) is None
 
 
+def test_write_report_names_the_file_after_the_target_in_target_mode(tmp_path: Path):
+    report = build_report({**meta(), "mode": "target", "target": "AS15169"}, modules(), [], {})
+    json_path, md_path = write_report(report, "# netcheck report\n", tmp_path)
+    assert json_path.name == "report_AS15169_20260808T191200Z.json"
+    assert md_path.name == "report_AS15169_20260808T191200Z.md"
+
+
 def test_atomic_write_creates_the_directory_and_leaves_no_temp_file(tmp_path: Path):
     target = tmp_path / "logs" / "report.json"
     atomic_write(target, '{"a": 1}')