Re: DOD prefixes and AS8003 / GRSCORP

[John Curran <jcurran () arin net>]

On 11 Mar 2021, at 7:56 AM, Siyuan Miao <aveline () misaka io<mailto:aveline () misaka io>> wrote:

Hi Folks,

Just noticed that almost all DOD prefixes (7.0.0.0/8,11.0.0.0/8,22.0.0.0/8<http://7.0.0.0/8,11.0.0.0/8,22.0.0.0/8> and 
bunch of /22s)  are now announced under AS8003 (GRSCORP) which was just formed a few months ago.

It looks so suspicious. Does anyone know if it's authorized?

Siyuan -

If you have concerns, you can confirm whether these IP address blocks are being routed as intended by verification with 
their listed technical contacts - e.g. https://search.arin.net/rdap/?query=22.0.0.0

As I noted on this list several weeks back - "lack of routing history is not at all a reliable indicator of the 
potential for valid routing of a given IPv4 block in the future, so best practice suggest that allocated address space 
should not be blocked by others without specific cause. Doing otherwise opens one up to unexpected surprises when 
issued space suddenly becomes more active in routing and is yet is inexplicably unreachable for some destinations."

Thanks!
/John

John Curran
President and CEO
American Registry for Internet Numbers