[arin-announce] Reminder: Changes to Whois-RWS and RDAP Scheduled for 12 February 2020

ARIN info at arin.net
Fri Dec 13 13:28:44 EST 2019

As we originally announced on 15 October 2019, there will be a change 
made to ARIN’s Whois-RWS and RDAP services on 12 February 2020. This 
change may impact the way you interface programmatically with ARIN to 
query and retrieve information from these services.

ARIN will no longer be supporting TLS 1.0 for Whois-RWS and RDAP 
services. There are well-known security issues with this protocol. We 
will continue to support TLS 1.1 and 1.2. Please make sure your client 
implementation will support TLS 1.1 or 1.2. Read 
for further details.

Because these changes will be implemented in about 60 days, we recommend 
that you review your clients that interface with the Whois-RWS and RDAP 
services, and make any required configuration or code changes in advance 
of this change. Both TLS 1.1 and TLS 1.2 are available now. We encourage 
you to make these changes so you will have no operational impact when we 
disable the vulnerable transport protocols.

So that you can plan your upgrades accordingly, we would also like to 
inform you of future planned events for this service. We will be adding 
TLS 1.3 support to Whois-RWS and RDAP in the near future. We also 
anticipate announcing end-of-service support for TLS 1.1, with another 
corresponding 120-day warning notice.


Mark Kosters
Chief Technology Officer

American Registry for Internet Numbers (ARIN)

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