content regulation, was Verizon Policy Statement on Net Neutrality

Scott Helms khelms at zcorum.com
Mon Mar 2 20:29:06 UTC 2015


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" <owen at delong.com> 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 <rsk at gsp.org> 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
>
>


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