How to know IronPort ASN (Asynchrounous System Number)

[pbabu6001]

I am very new about ASN and could you please let me know what is the ASN for my IronPort servers? I need to know this information as SORBS spam blacklisted one of our IronPort server IP and our internal users unable to send to some of the external domains. Thank you!

[Ken Stieers]

Your ASN is basically the block your IPs are on, its used in the BGP routing system used across the internet.   

https://en.wikipedia.org/wiki/Autonomous_system_(Internet)

[pbabu6001]

Hi Ken,

How to know my ASN number of IronPort servers. 

[Ken Stieers]

Go here: 

http://www.tcpiputils.com/browse/as

Enter your ip at the top, and hit search...

[dmccabej]

Hello,

Are you referring to the ASN box when registering for a SORBS account? If so, then this is not needed. Simply keep the ASN field blank and complete your registration, and then proceed to try and delist the IP address via the provided SORBS steps.

Thanks!

-Dennis M.

[pbabu6001]

Thanks Dennis for that. But I would to know my ASN number because I don't have the privilege to delist the IP address of our IronPort server.