[196107] in North American Network Operators' Group
Re: Question about Customer Population by ASN for Canada
daemon@ATHENA.MIT.EDU (Geoff Huston)
Tue Oct 3 04:57:53 2017
X-Original-To: nanog@nanog.org
From: Geoff Huston <gih@apnic.net>
In-Reply-To: <D5F8112F.5EF46%jacques.latour@cira.ca>
Date: Tue, 3 Oct 2017 08:53:59 +1100
To: Jacques Latour <jacques.latour@cira.ca>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> On 3 Oct 2017, at 6:57 am, Jacques Latour <jacques.latour@cira.ca> =
wrote:
>=20
> Hi all!
>=20
> I'm working on our IPv6 and DNSSEC adoption report for Canada and the =
data I use comes largely from APNIC =
(https://stats.labs.apnic.net/dnssec/CA) and =
(https://stats.labs.apnic.net/ipv6/CA).
>=20
> Labs.APNIC has a pretty cool system to measure this kind of stuff by =
deploying specially crafted google ads, see "How Big is that Network?" =
https://labs.apnic.net/?p=3D526, and APNIC is able to assess the =
population behind a network based on ad placement distribution. See =
https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA for Canada.
>=20
> The question I have is why does OVH come #6 with an estimated =
population of 1,480,927 behind its ASN? Remember these are actual =
placement of ads. Should I count those users as part of my stats?
>=20
> Rank ASN AS Name CC Users (est.) % of country % of =
Internet Samples
> 1 AS812 ROGERS-CABLE - Rogers Cable Communications Inc. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 5,420,034 =
16.72 0.16 555,718
> 2 AS577 BACOM - Bell Canada =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 4,474,012 =
13.8 0.132 458,722
> 3 AS6327 SHAW - Shaw Communications Inc. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 3,708,414 =
11.44 0.109 380,225
> 4 AS852 ASN852 - TELUS Communications Inc. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 2,914,405 =
8.99 0.086 298,815
> 5 AS5769 VIDEOTRON - Videotron Telecom Ltee =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 2,189,946 =
6.76 0.065 224,536
> 6 AS16276 OVH =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 1,480,927 =
4.57 0.044 151,840
> 7 AS15290 ALLST-15290 - Allstream Corp. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 1,272,374 =
3.93 0.038 130,457
> 8 AS855 CANET-ASN-4 - Bell Aliant Regional Communications, =
Inc. CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 1,211,485 =
3.74 0.036 124,214
> 9 AS7992 COGECOWAVE - Cogeco Cable =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 1,112,002 =
3.43 0.033 114,014
> 10 AS5645 TEKSAVVY - TekSavvy Solutions, Inc. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 967,401 2.98 =
0.029 99,188
> 11 AS11260 EASTLINK-HSI - EastLink =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 695,598 2.15 =
0.021 71,320
> 12 AS47027 SEASIDE-COMM - Seaside Communications, Inc. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 425,561 1.31 =
0.013 43,633
> 13 AS803 SASKTEL - Saskatchewan Telecommunications =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 392,186 1.21 =
0.012 40,211
> 14 AS11814 DISTRIBUTEL-AS11814 - DISTRIBUTEL COMMUNICATIONS LTD. =
CA<https://stats.labs.apnic.net/cgi-bin/aspop?c=3DCA> 370,348 1.14 =
0.011 37,972
Let me explain our system in a little more detail.
When we serve an ad we note the origin AS of the Ad. Now we assume =
(probably wrongly but we have no better data) that the ad=E2=80=99s are =
smeared evenly across the user population of each country. So we assume =
that the relative weight of ad placement within an AS is proportionate =
to the relative number of users in that same country. So if AS 131072 =
receives 50% of the Ads in a country then we assume that AS131072 holds =
one half of the number of users of the same country. Thats the first =
piece of data and the first assumption
The second assumption is that your government is not lying! That means =
that whatever stats your government lodged with the ITU-T relating to =
the number of Internet users in your country we believe. (and we =
actually use the world population data to update these numbers to =
represent the estimated user population today.)
Mashing the two togeether gives the table per country that you are =
citing here.
So your question is =E2=80=9C:Why is Google delivering 4.57% of the ads =
in Canada into a network ASN that is the ASN registered against OVH=E2=80=9D=
OVH is an overlay network, but its certainly clear that it is used by a =
lot of folk and Google appear to find their users to be an attractive =
target to ad placement. So we get a high placement count of Ads coming =
from OVH and we geolocate those users to CA. Maybe there is a =
geolocation issue and IVH should not be CA. Of there really are a lot of =
eyeballs behind OVH in Canada.
regards,
Geoff
