San Jose is most certainly not a pure coax network and is HFC. HSD does mean High Speed Data. On Mar 2, 2015 3:26 PM, "Owen DeLong" <[email protected]> wrote:
> Not so sure about that… > > 240.59.103.76.in-addr.arpa. 7200 IN PTR > c-76-103-59-240.hsd1.ca.comcast.net. > > is most definitely a business class service from Comcast. Seems to match > the entry for 24.7.48.153 pretty closely. > > I think the difference is the type of cable network in the particular > area. HFC is Hybrid Fiber Coax. The network in San Jose doesn’t really have > any fiber, so it’s likely not an HFC network. I’m not sure what HSD stands > for other than possibly “High Speed Data”, but I suspect it’s more likely > some cable-specific term for an all-copper alternative to HFC. > > Owen > > > On Mar 2, 2015, at 03:39 , Rich Kulawiec <[email protected]> wrote: > > > > 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 > >
