upsilon.cc: stefano zacchiroli home page

upsilon.cc whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: UPSILON.CC
Registry Domain ID: 87546037_DOMAIN_CC-VRSN
Registrar WHOIS Server: whois.gandi.net
Registrar URL: http://www.gandi.net
Updated Date: 2022-10-20T16:08:36Z
Creation Date: 2007-11-20T18:50:01Z
Registry Expiry Date: 2023-11-20T18:50:01Z
Registrar: Gandi SAS
Registrar IANA ID: 81
Registrar Abuse Contact Email: abuse@support.gandi.net
Registrar Abuse Contact Phone: +33.170377661
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS-160-C.GANDI.NET
Name Server: NS-240-B.GANDI.NET
Name Server: NS-9-A.GANDI.NET
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of WHOIS database: 2023-09-11T10:39:17Z

upsilon.cc server information

Servers Location

upsilon.cc desktop page speed rank

Last tested: 2019-03-07

Desktop Speed Medium

84/100

upsilon.cc Desktop Speed Test Quick Summary

priority - 6Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 59.6KiB (79% reduction).

Compressing https://upsilon.cc/~zack/index/300x-zack-2016-inria-swh.jpg could save 59.3KiB (81% reduction).
Compressing https://upsilon.cc/~zack/img/microformat_hcard.png could save 268B (16% reduction).

priority - 6Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking CSS resources. This causes a delay in rendering your page.

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https://upsilon.cc/~zack/style.css
https://upsilon.cc/~zack/local.css

priority - 3Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://upsilon.cc/
https://upsilon.cc/
https://upsilon.cc/~zack/

priority - 3Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://upsilon.cc/~zack/img/microformat_hcard.png (expiration not specified)
https://upsilon.cc/~zack/img/valid-xhtml10-blue.png (expiration not specified)
https://upsilon.cc/~zack/index/300x-zack-2016-inria-swh.jpg (expiration not specified)
https://upsilon.cc/~zack/local.css (expiration not specified)
https://upsilon.cc/~zack/style.css (expiration not specified)

priority - 0Minify CSS

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Minify CSS for the following resources to reduce their size by 472B (18% reduction).

Minifying https://upsilon.cc/~zack/style.css could save 472B (18% reduction) after compression.

upsilon.cc Desktop Resource Breakdown

Total Resources	10
Number of Hosts	3
Static Resources	6
CSS Resources	2

upsilon.cc mobile page speed rank

Last tested: 2019-03-07

Mobile Speed Medium

70/100

upsilon.cc Mobile Speed Test Quick Summary

priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

https://upsilon.cc/~zack/style.css
https://upsilon.cc/~zack/local.css

priority - 10Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://upsilon.cc/
https://upsilon.cc/
https://upsilon.cc/~zack/

priority - 6Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 59.6KiB (79% reduction).

Compressing https://upsilon.cc/~zack/index/300x-zack-2016-inria-swh.jpg could save 59.3KiB (81% reduction).
Compressing https://upsilon.cc/~zack/img/microformat_hcard.png could save 268B (16% reduction).

priority - 4Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

https://upsilon.cc/~zack/img/microformat_hcard.png (expiration not specified)
https://upsilon.cc/~zack/img/valid-xhtml10-blue.png (expiration not specified)
https://upsilon.cc/~zack/index/300x-zack-2016-inria-swh.jpg (expiration not specified)
https://upsilon.cc/~zack/local.css (expiration not specified)
https://upsilon.cc/~zack/style.css (expiration not specified)

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 472B (18% reduction).

Minifying https://upsilon.cc/~zack/style.css could save 472B (18% reduction) after compression.

upsilon.cc Mobile Resource Breakdown

Total Resources	10
Number of Hosts	3
Static Resources	6
CSS Resources	2

upsilon.cc mobile page usability

Last tested: 2019-03-07

Mobile Usability Bad

61/100

upsilon.cc Mobile Usability Test Quick Summary

priority - 37Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

RecentChanges and 4 others render only 5 pixels tall (13 CSS pixels).

Discussion renders only 5 pixels tall (13 CSS pixels).

home renders only 6 pixels tall (16 CSS pixels).

research and 6 others render only 6 pixels tall (16 CSS pixels).

publications and 4 others render only 5 pixels tall (14 CSS pixels).

CC BY-ND 4.0 renders only 3 pixels tall (9 CSS pixels).

and this is and 2 others render only 6 pixels tall (16 CSS pixels).

Zack renders only 6 pixels tall (16 CSS pixels).

Maître de conférences and 16 others render only 6 pixels tall (16 CSS pixels).

affiliation and 4 others render only 6 pixels tall (16 CSS pixels).

Developer, former 3 times and 11 others render only 6 pixels tall (16 CSS pixels).

Université Paris Diderot and 14 others render only 6 pixels tall (16 CSS pixels).

(please mail o…r mail anyhow) and 3 others render only 5 pixels tall (13 CSS pixels).

, ... and and 8 others render only 6 pixels tall (16 CSS pixels).

work renders only 6 pixels tall (16 CSS pixels).

zack@upsilon.cc and 2 others render only 6 pixels tall (16 CSS pixels).

GPG renders only 6 pixels tall (16 CSS pixels).

stats renders only 5 pixels tall (13 CSS pixels).

More about my…be found in my and 22 others render only 6 pixels tall (16 CSS pixels).

Highlights renders only 7 pixels tall (18 CSS pixels).

Atom and 1 others render only 5 pixels tall (13 CSS pixels).

Links: renders only 5 pixels tall (13 CSS pixels).

teaching/1112/progsyst and 9 others render only 5 pixels tall (13 CSS pixels).

... renders only 5 pixels tall (13 CSS pixels).

<zack@upsilon.cc> renders only 5 pixels tall (13 CSS pixels).

Creative Commo…tional License renders only 5 pixels tall (13 CSS pixels).

priority - 20Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="https://upsilo…dit&page=index">Edit</a> and 3 others are close to other tap targets.

The tap target <a href="./research/">research</a> and 6 others are close to other tap targets.

The tap target <a href="./research/publications/">publications</a> and 4 others are close to other tap targets.

The tap target <a href="http://creativ…nd/4.0/deed.en">CC BY-ND 4.0</a> is close to 1 other tap targets.

The tap target <a href="http://upsilon.cc/~zack" class="url">my homepage</a> and 13 others are close to other tap targets.

The tap target <a href="http://en.wiki…de_conferences">Maître de conférences</a> and 14 others are close to other tap targets.

The tap target <a href="mailto:zack@upsilon.cc" class="email">zack@upsilon.cc</a> and 1 others are close to other tap targets.

The tap target <a href="http://www.gnupg.org/">GPG</a> is close to 3 other tap targets.

The tap target <a href="http://pgp.cs.…/6D866396.html">stats</a> is close to 3 other tap targets.

The tap target <a href="http://microfo…org/wiki/hcard"></a> is close to 2 other tap targets.

The tap target <a href="index/hilights.rss" class="feedbutton">RSS</a> and 1 others are close to other tap targets.

The tap target <a href="./blog/">blog</a> and 5 others are close to other tap targets.

The tap target <a href="mailto:zack@upsilon.cc"><zack@upsilon.cc></a> is close to 1 other tap targets.

The tap target <a href="//creativecomm…ses/by-sa/4.0/"></a> is close to 1 other tap targets.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

upsilon.cc HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Line: 2 Column: 1 - 56
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.1//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-2.dtd"> <html..."

Bad value “vcs-git” for attribute “rel” on element “link”: The string “vcs-git” is not a registered keyword.

Line: 18 Column: 1 - 91
"....atom" /> <link rel="vcs-git" href="git://git.upsilon.cc/homepage.git" title="wiki git repository" /> </he..."

The “acronym” element is obsolete. Use the “abbr” element instead.

Line: 125 Column: 1 - 40
"...herches"> <acronym title= "Habilitation à diriger des recherches">HDR</a..." Line: 134 Column: 48 - 53
"...irif.fr/"><acronym title= "Institut de Recherche en Informatique Fondamentale">IRIF</..." Line: 138 Column: 44 - 54
"...rill.org"><acronym title= "Center for Research and Innovation on Free Software">IRILL<..." Line: 186 Column: 37 - 20
"...upg.org/"><acronym title= "GNU Privacy Guard">GPG</a..."

The “tt” element is obsolete. Use CSS instead.

Line: 168 Column: 5 - 8
"...</th> <td><tt><a cla..." Line: 169 Column: 52 - 55
".../a></tt>, <tt><a cla..." Line: 171 Column: 1 - 4
".../a></tt>, <tt><a cla..."

Attribute “xmlns:dct” not allowed here.

Line: 342 Column: 185 - 249
"...g" /></a> <span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Homepa..."

Attribute “xmlns:cc” not allowed here.

Line: 342 Column: 269 - 346
".../span> by <span xmlns:cc="http://creativecommons.org/ns#" property="cc:attributionName">Stefan..."

Warnings

Attribute with the local name “xmlns:dct” is not serializable as XML 1.0.

Line: 342 Column: 185 - 249
"...g" /></a> <span xmlns:dct="http://purl.org/dc/terms/" property="dct:title">Homepa..."

Attribute with the local name “xmlns:cc” is not serializable as XML 1.0.

Line: 342 Column: 269 - 346
".../span> by <span xmlns:cc="http://creativecommons.org/ns#" property="cc:attributionName">Stefan..."

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Line: 3 Column: 57 - 43
"...fa-2.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <hea..."

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upsilon.cc Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

upsilon.cc TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

UPSILON.CC stefano zacchiroli home page

upsilon.cc Website Information

Advertisement

upsilon.cc Alexa Rank

upsilon.cc whois

upsilon.cc server information

Servers Location

upsilon.cc desktop page speed rank

upsilon.cc Desktop Speed Test Quick Summary

priority - 6Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 59.6KiB (79% reduction).

priority - 6Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

priority - 3Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 3Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 472B (18% reduction).

upsilon.cc Desktop Resource Breakdown

upsilon.cc mobile page speed rank

upsilon.cc Mobile Speed Test Quick Summary

priority - 24Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 2 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

priority - 10Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 6Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 59.6KiB (79% reduction).

priority - 4Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 0Minify CSS

Compacting CSS code can save many bytes of data and speed up download and parse times.

Minify CSS for the following resources to reduce their size by 472B (18% reduction).

upsilon.cc Mobile Resource Breakdown

upsilon.cc mobile page usability

upsilon.cc Mobile Usability Test Quick Summary

priority - 37Use legible font sizes

The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.

The following text fragments have a small font size. Increase the font size to make them more legible.

priority - 20Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

priority - 10Configure the viewport

Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.

upsilon.cc HTML validation

Errors

Legacy doctype. Expected “<!DOCTYPE html>”.

Bad value “vcs-git” for attribute “rel” on element “link”: The string “vcs-git” is not a registered keyword.

The “acronym” element is obsolete. Use the “abbr” element instead.

The “tt” element is obsolete. Use CSS instead.

Attribute “xmlns:dct” not allowed here.

Attribute “xmlns:cc” not allowed here.

Warnings

Attribute with the local name “xmlns:dct” is not serializable as XML 1.0.

Attribute with the local name “xmlns:cc” is not serializable as XML 1.0.

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

upsilon.cc similar domains

upsilon.cc Ping

upsilon.cc TRACEROUTE