Dear RIPE DB wg, The RDAP for querying ip and network information on rdap.db.ripe.net is really useful. Currently you support the rdapConformance level "rdap_level_0" and this is missing the CIDR or Prefix Information about the Length/Mask. Other RIR have implemented a rdap conformance level "cidr0" for this: * https://rdap.arin.net/registry/ip/9.9.9.9 * https://rdap.apnic.net/ip/1.1.1.1 with the desired information: "cidr0_cidrs": [ { "v4prefix": "1.1.1.0", "length": 24 } ] Information about the Origin ASN is also available by arin with "arin_originas0", which is also very helpful, but the format seems to be arin specific and not standardized. May I suggest to also implement the cidr0 level, or even additionally the "origin as" for the RIPE DB RDAP? Kind regards, Benjamin