obspm.fr Website Information
Daily Unique Visits: 121,022
Daily Page Views: 726,132
Income Per Day: $1,452
Estimated Value: $1,045,440
This website is located in France and is using following IP address 145.238.193.73. See the complete list of popular websites hosted in France.
obspm.fr is registered under .FR top-level domain. Please check other sites in .FR zone.
Website obspm.fr is using the following name servers:
- ns2-m.obspm.fr
- ns1-p.obspm.fr
and is probably hosted by Renater. See the full list of other websites hosted by Renater.
The highest website obspm.fr position in Alexa rank database was 11574 and the lowest rank position was 11967. Current position of obspm.fr in Alexa rank database is 11851.
Desktop speed score of obspm.fr (56/100) is better than the results of 30.56% of other sites and shows that the page desktop performance can be improved.
Mobile usability score of obspm.fr (97/100) is better than the results of 49.9% of other sites and means that the page is mobile-friendly.
Mobile speed score of obspm.fr (47/100) is better than the results of 28.68% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
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obspm.fr Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
obspm.fr 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.
%% This is the AFNIC Whois server.
%%
%% complete date format : YYYY-MM-DDThh:mm:ssZ
%% short date format : DD/MM
%% version : FRNIC-2.5
%%
%% Rights restricted by copyright.
%% See https://www.afnic.fr/en/products-and-services/services/whois/whois-special-notice/
%%
%% Use '-h' option to obtain more information about this service.
%%
%% [167.99.102.248 REQUEST] >> obspm.fr
%%
%% RL Net [##########] - RL IP [#########.]
%%
domain: obspm.fr
status: ACTIVE
hold: NO
holder-c: ODP5-FRNIC
admin-c: CC716-FRNIC
tech-c: GRST1-FRNIC
tech-c: EH1526-FRNIC
tech-c: EV3746-FRNIC
zone-c: NFC1-FRNIC
nsl-id: NSL130283-FRNIC
registrar: GIP RENATER
Expiry Date: 2021-12-31T23:00:00Z
created: 1994-12-31T23:00:00Z
last-update: 2020-12-31T23:37:31Z
source: FRNIC
ns-list: NSL130283-FRNIC
nserver: ns1-p.obspm.fr [145.238.193.21]
nserver: ns2-m.obspm.fr [145.238.186.21]
source: FRNIC
registrar: GIP RENATER
type: Isp Option 1
address: Array
address: 75013 PARIS
country: FR
phone: +33 1 53 94 20 30
fax-no: +33 1 53 94 20 31
e-mail: domaine@renater.fr
website: http://www.renater.fr
anonymous: NO
registered: 1998-01-01T12:00:00Z
source: FRNIC
nic-hdl: ODP5-FRNIC
type: ORGANIZATION
contact: Observatoire de Paris
address: 61, avenue de l'Observatoire
address: 75014 Paris
country: FR
phone: +33 1 40 51 21 58
fax-no: +33 1 43 54 18 04
e-mail: president.observatoire@obspm.fr
registrar: GIP RENATER
changed: 2008-10-09T17:15:20Z whoismaster@nic.fr
anonymous: NO
obsoleted: NO
eligstatus: not identified
eligdate: 1969-12-31T23:00:00Z
reachstatus: not identified
source: FRNIC
nic-hdl: CC716-FRNIC
type: PERSON
contact: Claude Catala
address: Observatoire de Paris
address: Division Informatique de l'Observatoire
address: 61, avenue de l'Observatoire
address: 75014 Paris
country: FR
phone: +33 1 40 51 21 57
fax-no: +33 1 43 54 18 04
e-mail: president.observatoire@obspm.fr
registrar: GIP RENATER
changed: 2011-02-25T10:50:30Z nic@nic.fr
anonymous: NO
obsoleted: NO
eligstatus: not identified
reachstatus: not identified
source: FRNIC
nic-hdl: GRST1-FRNIC
type: PERSON
contact: Gip Renater Support Technique Dns
address: GIP RENATER
address: 23-25, rue Daviel
address: 75013 Paris
country: FR
phone: +33 1 53 94 20 40
e-mail: support-dns@renater.fr
registrar: GIP RENATER
changed: 2017-09-05T08:57:15Z nic@nic.fr
anonymous: NO
obsoleted: NO
eligstatus: not identified
reachstatus: not identified
source: FRNIC
nic-hdl: EH1526-FRNIC
type: PERSON
contact: Emmanuel Halbwachs
address: Observatoire de Paris
address: 61, avenue de l'observatoire
address: 75014 Paris
country: FR
phone: +33 1 45 07 75 54
e-mail: emmanuel.halbwachs@obspm.fr
registrar: GIP RENATER
changed: 2011-11-21T15:08:38Z nic@nic.fr
anonymous: NO
obsoleted: NO
eligstatus: not identified
reachstatus: not identified
source: FRNIC
nic-hdl: EV3746-FRNIC
type: PERSON
contact: Etienne Vogt
address: OBSERVATOIRE DE PARIS
address: 5, place Jules Janssen
address: 92190 Meudon
country: FR
phone: +1 45077625
e-mail: etienne.vogt@obspm.fr
registrar: GIP RENATER
changed: 2015-04-15T14:43:19Z nic@nic.fr
anonymous: NO
obsoleted: NO
eligstatus: not identified
reachstatus: not identified
source: FRNIC
obspm.fr server information
Servers Location
obspm.fr desktop page speed rank
Last tested: 2017-05-02
obspm.fr Desktop Speed Test Quick Summary
priority - 43Leverage browser caching
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priority - 2Enable compression
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priority - 1Minify CSS
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Minify CSS for the following resources to reduce their size by 6.5KiB (25% reduction).
Minifying https://www.obspm.fr/plugins-dist/organiseur/lib/f…endar/fullcalendar.css could save 1.1KiB (43% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/perso.css could save 1,022B (11% reduction) after compression.
Minifying https://www.obspm.fr/plugins/auto/z/v1.7.28/habillage.css could save 1,007B (30% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/mediabox/colorbo…k-striped/colorbox.css could save 726B (50% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/css/flipbook/flipbook.css could save 603B (27% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/porte_plume/css/barre_outils.css could save 518B (33% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.7KiB (18% reduction).
obspm.fr Desktop Resource Breakdown
Total Resources | 99 |
Number of Hosts | 4 |
Static Resources | 87 |
JavaScript Resources | 28 |
CSS Resources | 19 |
obspm.fr mobile page speed rank
Last tested: 2017-04-21
obspm.fr Mobile Speed Test Quick Summary
priority - 58Leverage 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://www.obspm.fr/local/cache-css/cssdyn-css_nivoslider_css-6f952676.css (expiration not specified)
https://www.obspm.fr/local/cache-gd2/133dddd64aeaadee61d2463dc08da47f.jpg (expiration not specified)
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https://www.obspm.fr/local/cache-gd2/8c3c01650305a17d66e02737b25e2b4c.png (expiration not specified)
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https://www.obspm.fr/local/cache-gd2/c85d24853020cb0171bdb4b112529fe0.png (expiration not specified)
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https://www.obspm.fr/local/cache-gd2/f41d8d24885c89ded8a9ab9ed3178410.png (expiration not specified)
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https://www.obspm.fr/local/cache-js/jsdyn-javascript_scripts_js-4f0cfb57.js (expiration not specified)
https://www.obspm.fr/local/cache-js/jsdyn-socialtags_js-8d8d06d2.js (expiration not specified)
https://www.obspm.fr/local/cache-vignettes/L130xH97/arton3404-42544.jpg (expiration not specified)
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https://www.obspm.fr/local/couteau-suisse/header.js (expiration not specified)
https://www.obspm.fr/plugins-dist/jquery_ui/css/jquery-ui.css (expiration not specified)
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https://www.obspm.fr/plugins/auto/nivoslider/v2.0.…ry.nivo.slider.pack.js (expiration not specified)
https://www.obspm.fr/plugins/auto/socialtags/v1.0.7/socialtags.css (expiration not specified)
https://www.obspm.fr/plugins/auto/typoenluminee/v3…ss/enluminurestypo.css (expiration not specified)
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https://www.obspm.fr/plugins/obspm/css/camera/camera.css (expiration not specified)
https://www.obspm.fr/plugins/obspm/css/flipbook/flipbook.css (expiration not specified)
https://www.obspm.fr/plugins/obspm/css/responsive.css (expiration not specified)
https://www.obspm.fr/plugins/obspm/css/smoothDivScroll.css (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/Sfacebook.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/Sinstagram.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/Stwitter.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/Syoutube.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/bg-footer-nav-tablette.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/bg-main-nav-tablette.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/carreblanc.jpg (expiration not specified)
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https://www.obspm.fr/plugins/obspm/img/logoPSL092015.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/img/nav_mobile.jpg (expiration not specified)
https://www.obspm.fr/plugins/obspm/javascript/camera/camera.min.js (expiration not specified)
https://www.obspm.fr/plugins/obspm/javascript/flipbook/flipbook.js (expiration not specified)
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https://www.obspm.fr/plugins/obspm/javascript/jquery.easing.1.3.js (expiration not specified)
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https://www.obspm.fr/plugins/obspm/javascript/jquery.mousewheel.min.js (expiration not specified)
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https://www.obspm.fr/plugins/obspm/javascript/plugins.js (expiration not specified)
https://www.obspm.fr/plugins/obspm/perso.css (expiration not specified)
https://www.obspm.fr/prive/javascript/ajaxCallback.js (expiration not specified)
https://www.obspm.fr/prive/javascript/jquery.autosave.js (expiration not specified)
https://www.obspm.fr/prive/javascript/jquery.cookie.js (expiration not specified)
https://www.obspm.fr/prive/javascript/jquery.form.js (expiration not specified)
https://www.obspm.fr/prive/javascript/jquery.js (expiration not specified)
https://www.obspm.fr/prive/javascript/jquery.placeholder-label.js (expiration not specified)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 48Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 27 blocking script resources and 20 blocking CSS resources. This causes a delay in rendering your page.
Remove render-blocking JavaScript:
https://www.obspm.fr/prive/javascript/jquery.form.js
https://www.obspm.fr/prive/javascript/jquery.autosave.js
https://www.obspm.fr/prive/javascript/jquery.placeholder-label.js
https://www.obspm.fr/prive/javascript/ajaxCallback.js
https://www.obspm.fr/prive/javascript/jquery.cookie.js
https://www.obspm.fr/plugins/auto/videos/v0.10.11/…/api/html5media.min.js
https://www.obspm.fr/plugins-dist/mediabox/javascr…colorbox.js?1488796894
https://www.obspm.fr/plugins-dist/mediabox/javascr…mediabox.js?1488796894
https://www.obspm.fr/plugins-dist/porte_plume/java….markitup_pour_spip.js
https://www.obspm.fr/plugins-dist/porte_plume/java…jquery.previsu_spip.js
https://www.obspm.fr/spip.php?page=porte_plume_start.js&lang=fr
https://www.obspm.fr/plugins/auto/boutonstexte/v2.…script/boutonstexte.js
https://www.obspm.fr/local/couteau-suisse/header.js
https://www.obspm.fr/plugins/auto/nivoslider/v2.0.…ry.nivo.slider.pack.js
https://www.obspm.fr/local/cache-js/jsdyn-socialtags_js-8d8d06d2.js
https://www.obspm.fr/plugins/auto/zoombox/zoombox.js
https://www.obspm.fr/plugins/obspm/javascript/jquery.mousewheel.min.js
https://www.obspm.fr/plugins/obspm/javascript/jquery.kinetic.js
https://www.obspm.fr/plugins/obspm/javascript/jque…thdivscroll-1.3-min.js
https://www.obspm.fr/plugins/obspm/javascript/horloge.js
https://www.obspm.fr/local/cache-js/jsdyn-javascript_scripts_js-4f0cfb57.js
https://www.obspm.fr/plugins-dist/organiseur/lib/f…ar/fullcalendar.min.js
https://www.obspm.fr/plugins/obspm/javascript/jquery.easing.1.3.js
https://www.obspm.fr/plugins/obspm/javascript/camera/camera.min.js
https://www.obspm.fr/plugins/obspm/javascript/plugins.js
https://www.obspm.fr/plugins/obspm/javascript/flipbook/flipbook.js
Optimize CSS Delivery of the following:
https://www.obspm.fr/plugins/auto/z/v1.7.28/spip_formulaires.css
https://www.obspm.fr/plugins-dist/mediabox/colorbo…k-striped/colorbox.css
https://www.obspm.fr/plugins-dist/porte_plume/css/barre_outils.css
https://www.obspm.fr/spip.php?page=barre_outils_icones.css
https://www.obspm.fr/plugins/auto/boutonstexte/v2.0.2/css/boutonstexte.css
https://www.obspm.fr/local/couteau-suisse/header.css
https://www.obspm.fr/plugins/auto/typoenluminee/v3…ss/enluminurestypo.css
https://www.obspm.fr/local/cache-css/cssdyn-css_nivoslider_css-6f952676.css
https://www.obspm.fr/plugins/auto/socialtags/v1.0.7/socialtags.css
https://www.obspm.fr/plugins/auto/zoombox/zoombox.css
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https://www.obspm.fr/plugins-dist/jquery_ui/css/jquery-ui.css
https://www.obspm.fr/plugins/auto/z/v1.7.28/habillage.css
https://www.obspm.fr/plugins-dist/organiseur/lib/f…endar/fullcalendar.css
https://www.obspm.fr/plugins/obspm/perso.css
https://www.obspm.fr/plugins/obspm/css/responsive.css
https://www.obspm.fr/plugins/obspm/css/smoothDivScroll.css
https://www.obspm.fr/plugins/obspm/css/camera/camera.css
https://www.obspm.fr/plugins/obspm/css/flipbook/flipbook.css
priority - 11Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 110.7KiB (38% reduction).
Minifying https://www.obspm.fr/prive/javascript/jquery.js could save 32.8KiB (46% reduction) after compression.
Minifying https://www.obspm.fr/prive/javascript/ajaxCallback.js could save 4.8KiB (49% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/javascript/jque…thdivscroll-1.3-min.js could save 4.7KiB (53% reduction) after compression.
Minifying https://www.obspm.fr/prive/javascript/jquery.form.js could save 4.2KiB (45% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/javascript/camera/camera.min.js could save 4KiB (31% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/porte_plume/java….markitup_pour_spip.js could save 3.3KiB (45% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/mediabox/javascr…colorbox.js?1488796894 could save 3.3KiB (39% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/javascript/horloge.js could save 2.9KiB (54% reduction) after compression.
Minifying https://www.obspm.fr/spip.php?page=porte_plume_start.js&lang=fr could save 2.6KiB (12% reduction).
Minifying https://www.obspm.fr/plugins/obspm/javascript/flipbook/flipbook.js could save 2.1KiB (14% reduction) after compression.
Minifying https://www.obspm.fr/local/couteau-suisse/header.js could save 1.6KiB (43% reduction) after compression.
Minifying https://www.obspm.fr/plugins/auto/zoombox/zoombox.js could save 1.6KiB (31% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/javascript/jquery.easing.1.3.js could save 1.1KiB (58% reduction) after compression.
Minifying https://www.obspm.fr/prive/javascript/jquery.cookie.js could save 1KiB (68% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/mediabox/javascr…mediabox.js?1488796894 could save 703B (52% reduction) after compression.
Minifying https://www.obspm.fr/local/cache-js/jsdyn-javascript_scripts_js-4f0cfb57.js could save 576B (24% reduction) after compression.
priority - 5Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 40.6KiB (49% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/bg-footer-nav-tablette.jpg could save 7.9KiB (96% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/icones-tablette.png could save 3.9KiB (24% reduction).
Compressing https://www.obspm.fr/IMG/siteon0.png could save 1.6KiB (16% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/logoPSL092015.jpg could save 1.3KiB (24% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/nav_mobile.jpg could save 1.1KiB (24% reduction).
Compressing https://www.obspm.fr/local/cache-gd2/133dddd64aeaadee61d2463dc08da47f.jpg could save 1KiB (11% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/langue-english.jpg could save 987B (65% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/Sinstagram.jpg could save 930B (57% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/carreblanc.jpg could save 842B (74% reduction).
Compressing https://www.obspm.fr/plugins/obspm/img/gradient-sidebar-left.png could save 774B (38% reduction).
priority - 2Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 18.8KiB (83% reduction).
priority - 1Minify 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 7.8KiB (27% reduction).
Minifying https://www.obspm.fr/plugins/obspm/css/responsive.css could save 1.4KiB (52% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/organiseur/lib/f…endar/fullcalendar.css could save 1.1KiB (43% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/perso.css could save 1,022B (11% reduction) after compression.
Minifying https://www.obspm.fr/plugins/auto/z/v1.7.28/habillage.css could save 1,007B (30% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/mediabox/colorbo…k-striped/colorbox.css could save 726B (50% reduction) after compression.
Minifying https://www.obspm.fr/plugins/obspm/css/flipbook/flipbook.css could save 603B (27% reduction) after compression.
Minifying https://www.obspm.fr/plugins-dist/porte_plume/css/barre_outils.css could save 518B (33% reduction) after compression.
priority - 0Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 1.7KiB (18% reduction).
obspm.fr Mobile Resource Breakdown
Total Resources | 89 |
Number of Hosts | 4 |
Static Resources | 77 |
JavaScript Resources | 28 |
CSS Resources | 20 |
obspm.fr mobile page usability
Last tested: 2017-04-21
obspm.fr Mobile Usability Test Quick Summary
priority - 2Size 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.
<a href="-recherche-.html">Recherche</a>
and 2 others are close to other tap targets.<a href="-recherche-.html">Recherche</a>
and 2 others are close to other tap targets.<a href="-lumiere-sur-.html">Lumière sur...</a>
and 7 others are close to other tap targets.The tap target
<a href="plans-d-acces-240.html">Plans d’accès</a>
is close to 1 other tap targets.The tap target
<a href="-espace-presse-.html">Espace Presse</a>
is close to 1 other tap targets.obspm.fr HTML validation
Errors
Almost standards mode doctype. Expected “<!DOCTYPE html>”.
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <!-- ..."
Bad value “projection, screen, tv” for attribute “media” on element “link”: Deprecated media type “projection”. For guidance, see the Media Types section in the current Media Queries specification.
"...all" /> <link rel="stylesheet" href="plugins/auto/z/v1.7.28/spip_formulaires.css" type="text/css" media="projection, screen, tv" /> <sc..." Line: 43 Column: 1 - 120
"...s) --> <link rel="stylesheet" href="plugins-dist/jquery_ui/css/jquery-ui.css" type="text/css" media="projection, screen, tv" /> <link..." Line: 44 Column: 1 - 116
"...n, tv" /> <link rel="stylesheet" href="plugins/auto/z/v1.7.28/habillage.css" type="text/css" media="projection, screen, tv" /> <..." Line: 50 Column: 1 - 103
"...r.css' /> <link rel="stylesheet" href="plugins/obspm/perso.css" type="text/css" media="projection, screen, tv" /> <lin..." Line: 52 Column: 1 - 117
"..., tv" /> <link rel="stylesheet" href="plugins/obspm/css/smoothDivScroll.css" type="text/css" media="projection, screen, tv" /> <s..."
Bad value “” for attribute “src” on element “script”: Must be non-empty.
".../script> <script type='text/javascript' src=''></scri..."
Attribute “autocapitalize” not allowed on element “input” at this point.
"...</label> <input type="text" class="flleft texte_recherche" name="recherche" placeholder="Rechercher..." id="recherche_field_top" autocapitalize="off" autocorrect="off" /> <inp..."
Attribute “autocorrect” not allowed on element “input” at this point.
"...</label> <input type="text" class="flleft texte_recherche" name="recherche" placeholder="Rechercher..." id="recherche_field_top" autocapitalize="off" autocorrect="off" /> <inp..."
Attribute “rel” not allowed on element “li” at this point.
"...> <li rel="3741" class=" active"> ..." Line: 937 Column: 5 - 28
"...> <li rel="3737" class=""> ..." Line: 942 Column: 5 - 28
"...> <li rel="3725" class=""> ..."
End tag “li” seen, but there were open elements.
"......"
Unclosed element “a”.
"..."no_link"><a href="http://www.obspm.fr/spip.php?page=newsletter&utm_source=siteweb&utm_medium=lien&utm_content=basdepage&utm_campaign=inscriptionlettre"><b>Lettre ..."
Element “a” not allowed as child of element “ul” in this context. (Suppressing further errors from this subtree.)
"...</b></li> <li cl..."
End tag “a” violates nesting rules.
"...onnez vous</a></li> ..."
Cannot recover after last error. Any further errors will be ignored.
"...onnez vous</a></li> ..."
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www.obspk.fr
www.obspmk.fr
www.obspkm.fr
obspm.fr 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.
obspm.fr 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.