APNIC has whowas also https://www.apnic.net/static/whowas-ui/ For RWhois, check with the organization operating rwhoisd? They might have the information beyond RWhois. Yang On Mon, Dec 18, 2017 at 9:11 AM, Benoit Panizzon <benoit.panizzon@imp.ch> wrote:
Well @ RIPE ist is quite simple to query historical data:
https://www.ripe.net/manage-ips-and-asns/db/support/documentation/ripe-datab...
I don't know if other registries offer similar services.
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