{"endpoint":{"id":6878,"url":"https://dns-whois-lookup.underscoredone.com/.well-known/agent-card.json","host":"dns-whois-lookup.underscoredone.com","kind":"a2a","first_seen":"2026-09-07T00:02:57+00:00","last_seen":"2026-09-11T15:25:46+00:00","last_probed_at":"2026-09-11T12:12:35+00:00","last_outcome":"http-error","last_score":null,"last_latency_ms":796,"last_http_status":404,"last_inferred":0},"probes":[{"id":720108,"endpoint_id":6878,"probed_at":"2026-09-11T12:12:35+00:00","probe_kind":"a2a","outcome":"http-error","http_status":404,"latency_ms":796,"protocol_version":null,"score":null,"capabilities":{},"error":"HTTP 404","meta":{"card_url":"https://dns-whois-lookup.underscoredone.com/.well-known/agent.json","http_version":"HTTP/1.1","vantage":"us-east-1"},"ip":"104.21.44.180"},{"id":612193,"endpoint_id":6878,"probed_at":"2026-09-10T11:13:04+00:00","probe_kind":"a2a","outcome":"http-error","http_status":404,"latency_ms":1077,"protocol_version":null,"score":null,"capabilities":{},"error":"HTTP 404","meta":{"card_url":"https://dns-whois-lookup.underscoredone.com/.well-known/agent.json","http_version":"HTTP/1.1","vantage":"us-east-1"},"ip":"104.21.44.180"},{"id":461452,"endpoint_id":6878,"probed_at":"2026-09-09T10:16:00+00:00","probe_kind":"a2a","outcome":"http-error","http_status":404,"latency_ms":643,"protocol_version":null,"score":null,"capabilities":{},"error":"HTTP 404","meta":{"card_url":"https://dns-whois-lookup.underscoredone.com/.well-known/agent.json","http_version":"HTTP/1.1","vantage":"us-east-1"},"ip":"104.21.44.180"},{"id":385303,"endpoint_id":6878,"probed_at":"2026-09-09T09:15:51+00:00","probe_kind":"a2a","outcome":"connect-fail","http_status":null,"latency_ms":1142,"protocol_version":null,"score":null,"capabilities":{},"error":"h2: Invalid input ConnectionInputs.SEND_SETTINGS in state ConnectionState.CLOSED","meta":{"vantage":"us-east-1"},"ip":"104.21.44.180"},{"id":279185,"endpoint_id":6878,"probed_at":"2026-09-08T08:13:47+00:00","probe_kind":"a2a","outcome":"connect-fail","http_status":null,"latency_ms":859,"protocol_version":null,"score":null,"capabilities":{},"error":"h2: Invalid input ConnectionInputs.SEND_SETTINGS in state ConnectionState.CLOSED","meta":{"vantage":"us-east-1"},"ip":"104.21.44.180"},{"id":22403,"endpoint_id":6878,"probed_at":"2026-09-07T05:01:49+00:00","probe_kind":"a2a","outcome":"http-error","http_status":404,"latency_ms":96,"protocol_version":null,"score":null,"capabilities":{},"error":"HTTP 404","meta":{"card_url":"https://dns-whois-lookup.underscoredone.com/.well-known/agent.json"},"ip":"104.21.44.180"}]}