What does mean "block of addresses"

I've got a reply by ISP, which I, in all honesty, do no understand.

They told me they allocated a:

"block of public address" - what does that mean?

Also what is VIP DGW?

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Pete LongTechnical ConsultantCommented:
It will be a network address, type it into my subnet calculator and it will tell you the usable range, and the broadcast address :)

So in your example; is the subnet address is the mask is the broadcast address to 122 are usable (you get 2 hosts with a /30 address)


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Pete LongTechnical ConsultantCommented:
VIP =Virtual IP
DGW=Default Gateway
DP230Network AdministratorCommented:
Maybe your Router/modem's interface will have IP of, the other side of ISP has IP address of

IP address always go with subnet mask, it defines the number of networks and hosts which a address block can serve.
mrmutAuthor Commented:
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