[arin-tech-discuss] Easy way to check if a block is legacy?

Owen DeLong owen at delong.com
Thu Nov 6 12:44:37 EST 2014

Perhaps it would be worth while to add a “RSA Version” field to Whois with possible values of:

RSA v<X>

Where <X> is the appropriate version number.

This doesn’t disclose the details of the custom RSA, but at least it allows others to know which terms the block is covered by or that those terms are unknown to the community.


> On Nov 6, 2014, at 3:22 AM, John Curran <jcurran at arin.net> wrote:
> On Nov 6, 2014, at 11:06 AM, Aaron Hughes <aaronh at tcp0.com> wrote:
>> ARIN Tech Team,
>> In scripting some ROA related stuff the question came up, how does one check to see if block is legacy. Is there a flag in restwhois to identify this?
> Aaron -
> An address block is legacy in origin if issued prior to ARIN's inception
> on December 22, 1997.  Legacy address blocks may subsequently be covered 
> by an RSA or LRSA agreement, so scripting specifically on being issued 
> prior to ARIN's inception may to be fruitful.
> FYI,
> /John
> John Curran
> President and CEO
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