>> which in this case showed a dozen or so copies

Yeah sorry, I should have said that I was only looking into the time frame 2017 till now.

>> I think it's possible that the bogin list just doesn't change that frequently.

I think I aggree that it is unlikely to change frequently, however, there is not a single snapshot in archive.org for 2018.

Best regards,
Lars

Am 15.12.18 um 17:38 schrieb Mel Beckman:
My understanding is that the calendar, which in this case showed a dozen or so 
copies, lists only crawled instances that had changed since The previous crawl. 
Well it certainly true that time elapses between each crawl, so it's possible 
that some changes could be missed, my understanding is that the Internet the 
scroll frequently enough that changes would be detected at least every month or 
so.

I think it's possible that the bogin list just doesn't change that frequently.

-mel via cell

On Dec 15, 2018, at 1:30 AM, Lars Prehn <lpr...@inet.tu-berlin.de> wrote:

Hi Mel,

I already checked Archive.org - it holds two previous copies.

lets you download each version of the list that archive.org noticed changed
According to Archive.org's own Note this seems to be inaccurate:
This calendar view maps the number of times 
https://www.cidr-report.org/bogons/freespace-dec.txt was crawled by the Wayback 
Machine, not how many times the site was actually updated.

, or am I missing something?

Best regards,
Lars

Am 15.12.18 um 09:47 schrieb Mel Beckman:
Lars,

Archive.org has snapshots going back several year. Just feed in the URL you 
posted, ad you’ll get a history that lets you download each version of the list 
that archive.org noticed changed. In my experience, that is pretty 
comprehensive.

  -mel beckman

On Dec 15, 2018, at 12:31 AM, Lars Prehn <lpr...@inet.tu-berlin.de> wrote:

Hi everyone,

In order to sanitize historical BGP data I would like to use historical Bogon 
lists. The CIDR report generates those lists on a daily basis (e.g. 
https://www.cidr-report.org/bogons/freespace-dec.txt for prefixes) but, as far 
as I know, it does not keep a history of those files - it only holds the most 
up-to-date file. Does anybody know of a repository that contains such bogon 
lists for historical data, or, did anybody continiously fecthed and saved CIDR 
report's bogon lists?

Best regards,

Lars


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