nanog mailing list archives

Re: content regulation, was Verizon Policy Statement on Net Neutrality


From: Rich Kulawiec <rsk () gsp org>
Date: Mon, 2 Mar 2015 06:39:46 -0500

On Sun, Mar 01, 2015 at 11:58:34AM -0500, Christopher Morrow wrote:
business vs consumer edition products? (that'd be my bet)

I think these are all residential customers, as business customers
appear to use different subdomains and/or host naming conventions, e.g.:

        24.7.48.153     c-24-7-48-153.hsd1.ca.comcast.net
        24.10.217.142   c-24-10-217-142.hsd1.ut.comcast.net
        24.129.85.220   c-24-129-85-220.hsd1.fl.comcast.net
vs.
        70.88.25.201    70-88-25-201-chesterfield-va.hfc.comcastbusiness.net
        70.90.158.37    70-90-158-37-knoxville.hfc.comcastbusiness.net
        70.91.133.105   70-91-133-105-ma-ne.hfc.comcastbusiness.net

Or:
        23.240.176.98   cpe-23-240-176-98.socal.res.rr.com
        24.25.253.81    cpe-24-25-253-81.hawaii.res.rr.com
        24.27.121.156   cpe-24-27-121-156.tx.res.rr.com
vs.
        24.106.98.106   rrcs-24-106-98-106.central.biz.rr.com
        24.142.142.169  rrcs-24-142-142-169.central.biz.rr.com
        24.173.100.134  rrcs-24-173-100-134.sw.biz.rr.com

Those are all (very recent) direct-to-MX on port 25 spam sources, but it
looks to me like the first group in each set is residential and the second
group is business.  But perhaps I'm misinterpreting the naming.

---rsk


Current thread: