Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!ncar!elroy.jpl.nasa.gov!swrinde!mips!pacbell.com!att!ucbvax!dog.ee.lbl.gov!elf.ee.lbl.gov!torek From: torek@elf.ee.lbl.gov (Chris Torek) Newsgroups: comp.unix.questions Subject: Re: Internet Sites Message-ID: <12170@dog.ee.lbl.gov> Date: 17 Apr 91 16:44:14 GMT References: Reply-To: torek@elf.ee.lbl.gov (Chris Torek) Organization: Lawrence Berkeley Laboratory, Berkeley Lines: 18 X-Local-Date: Wed, 17 Apr 91 09:44:14 PDT In article jy0q+@andrew.cmu.edu (Jules Andrew Yasuna) writes: >Is there any way to obtain a list of all the internet adresses w/ >[host]names. It is possible to do a domain tree walk using zone transfers (see, e.g., robodoc). This takes several weeks, and at the rate the Internet changes, any complete host table will be out of date within about 10 minutes. (I have assumed 100000 changes per year, or one every 447 seconds, in a uniform distribution. This is inexact but fairly close.) A complete domain tree walk is not possible as some large sites refuse zone transfers; however, you should be able to assemble a list of about 300000 hosts. -- In-Real-Life: Chris Torek, Lawrence Berkeley Lab CSE/EE (+1 415 486 5427) Berkeley, CA Domain: torek@ee.lbl.gov