OT: Whois protocol

[Frank Cisco]

A bit off topic, but I'm not sure where to post this one.

What the feck does the number after the slash mean with 'inetnum'?

eg. 123.456.789/20 -- what's the 20 signify?

it's also on 'inetrev'. What's that?

 

[Bryce]

A bit off topic, but I'm not sure where to post this one.

What the feck does the number after the slash mean with 'inetnum'?

eg. 123.456.789/20 -- what's the 20 signify?

it's also on 'inetrev'. What's that?

It's CIDR-speak for a 20-bit subnet. For the whole story, see

http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

 

[Frank Cisco]

Thanks for that. So it's short-hand for defining a netblock?

 

[Bryce]

Thanks for that. So it's short-hand for defining a netblock?

"Netblock" is a new one to me, but I think you're right. Here's
another reference that says more:
http://www.bind.com/netmasks.html