Hello, Thank you for the quick response. I created the measurement on RIPE atlas portal. Please find the below image for reference, every time I check the Set DO bit field. I’ve also used the Rest API and the measurement looks like this, "af": 4, "query_class": "IN", "query_type": "RRSIG", "query_argument": "example.com<http://example.com>", "use_macros": false, "description": "DNS measurement to", "use_probe_resolver": true, "resolve_on_probe": false, "set_nsid_bit": false, "protocol": "UDP", "udp_payload_size": 512, "retry": 0, "skip_dns_check": false, "include_qbuf": false, "include_abuf": true, "prepend_probe_id": false, "set_rd_bit": false, "set_do_bit": true, "set_cd_bit": false, "timeout": 5000, "type": "dns" [cid:A4892F22-405F-478C-9630-C487C5955BB8] Thanks On Jul 6, 2021, at 10:59 AM, Philip Homburg <philip.homburg@ripe.net<mailto:philip.homburg@ripe.net>> wrote: On 2021/07/06 16:18 , pravicha wrote: The measurement ID is 31426231. I query for DNSKEY records, have the do bit set in this and yet don’t get back the RRSIGs. Hi, DNSSEC OK flag is false in this measurement. See https://atlas.ripe.net/measurements/31426231/#general and then 'DNS Specific Settings'. Maybe something went wrong in the creation of the measurement. What tool did you use? Philip
