l i n u x - u s e r s - g r o u p - o f - d a v i s
Next Meeting:
July 7: Social gathering
Next Installfest:
Latest News:
Jun. 14: June LUGOD meeting cancelled
Page last updated:
2004 Sep 27 10:08

The following is an archive of a post made to our 'vox-tech mailing list' by one of its subscribers.

Report this post as spam:

(Enter your email address)
[vox-tech] Getting next-closest hostname for an IP address
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[vox-tech] Getting next-closest hostname for an IP address

I have a problem which I'm hoping one of the networking gurus out here can
help me with.

I'm trying to determine the hostname of a system that's one step closer to
me than the IP address I have in my hand.  The IP address I have is temporary
and unnamed (FYI, it's a cellphone), so "host", "nslookup" and "resolveip"
all fail.

To explain graphically:

  [My server] -> ... -> ... -> [Wireless provider] -> [Cellphone]

I have the IP address of the cellphone, but it has no hostname.
So I'm hoping to be able to get the hostname of some machine in the
wireless provider's network, so I can determine who the carrier is.

If I do a "traceroute" or "mtr" on the IP address, for example, I can see
that the last few hops are "###.sub-##-###-##.myvzw.com".  From that
I can determine, "oh, 'myvzw.com'... must be Verizon."

But is there a tool I can use that can get this information?
(I need it fairly quickly, and in a format easy for pulling in via a
script -- I need to get this information _while_ responding to the phone
when it connects to my server.  It would be simiar to "gethostbyaddr($IP)"
or calling `host $IP` in PHP, except it'd get the name of the next hop up.)


bill@newbreedsoftware.com                            New Breed Software
http://www.newbreedsoftware.com/       Tux Paint 0.9.14 -- Coming soon!
vox-tech mailing list

LUGOD Group on LinkedIn
Sign up for LUGOD event announcements
Your email address:
LUGOD Group on Facebook
'Like' LUGOD on Facebook:

Hosting provided by:
Sunset Systems
Sunset Systems offers preconfigured Linux systems, remote system administration and custom software development.

LUGOD: Linux Users' Group of Davis
PO Box 2082, Davis, CA 95617
Contact Us

LUGOD is a 501(c)7 non-profit organization
based in Davis, California
and serving the Sacramento area.
"Linux" is a trademark of Linus Torvalds.

Sponsored in part by:
Sunset Systems
Who graciously hosts our website & mailing lists!