[SANOG] Is there a way to check whether any particular segment was ever announced to the Internet

[Gaurav Kansal]

Thanks a lot Rahul and Anurag for valuable information. 

Thanks 
Gaurav Kansal

> On 23-Oct-2021, at 4:10 PM, rahul.m at estointernet.in wrote:
> 
> 
> Hi Gaurav,
> 
> There are route-collectors hosted publicly that do keep record of BGP advertisements. I just checked the given prefix on one such service provided by RIPE NCC and found that the given prefix has been announced from any ASN.
> 
> The only relevant announcement recorded after 2018 is by AS9498, but that is for the complete 2400::/12. I would consider that as a route leak instead of a valid announcement.
> 
> <image.png>
> 
> 
> Thank you.
> Rahul
> 
>> On Sat, Oct 23, 2021 at 4:01 PM Gaurav Kansal via sanog <sanog at sanog.org> wrote:
>> Hi folks,
>> 
>> I just want to check if there is any way to check whether any particular segment (I am interested to know whether 240e:2000::/19 , which was allotted by APNIC in 2018) was ever announced to the Internet.
>> 
>> Thanks,
>> Gaurav Kansal
>> 
>> 
>> 
>> 
>> 
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>> 
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