Rating:

4.4 of 5 (5 votes)

Indexed pages:

Backwards:

Links from homepages:

521 links (from 364 hosts)
updated November 6, 2013

Homepage links:

Unique visitors:

Snapshot history:

HTML validation:

OK

DNS resolve:

OK

Domain worth:

$1,262,148

Health score:

71.37%

Google updates:

Technical

Website availability: (is site down?)

Latest result: Website is UP

Latest test time and date: 3:17:55 PM January 17, 2016

Latest test duration: 3.068 seconds

Test results (detailed CURL answer)

HTML size: 67204 bytes

Url: http://www.pnas.org/

Content_type: text/html;charset=UTF-8

Http_code: 200

Header_size: 1557

Request_size: 338

Filetime: -1

Redirect_count: 1

Total_time: 3.023016

Namelookup_time: 0.535394

Connect_time: 0.61222

Pretransfer_time: 0.612245

Size_download: 67204

Speed_download: 22230

Download_content_length: 67204

Starttransfer_time: 2.055422

Redirect_time: 0.659579

Used technologies:

Analytics

Google Analytics

Cache tools

Varnish

Font scripts

Google Font API

Javascript frameworks

jQuery (version 1.7.2)

Modernizr

Programming languages

Java

Web servers

Nginx (version 0.7.67)

Hosting:

Stanford University

Hosting abuse phone:

office +1-650-723-3352

Hosting abuse mail:

Domain IP:

171.66.121.222 United States

DNS Resolve:

OK

Domain registrar:

Public Interest Registry domain profile
Domains using same registrar:454,463

Name server (NS) records:

ns1.p20.dynect.net (IP 208.78.70.20)
Other domains using this NS: 323
ns2.p20.dynect.net (IP 204.13.250.20)
Other domains using this NS: 322
ns3.p20.dynect.net (IP 208.78.71.20)
Other domains using this NS: 314
ns4.p20.dynect.net (IP 204.13.251.20)
Other domains using this NS: 312

NS history:

14 changes since July 3, 2009

February 21, 2012	NS1.highwire.org NS2.highwire.org NS3.highwire.org NS5.highwire.org hw-dc1.highwire.org hw-dc2.highwire.org	→	ns1.p20.dynect.net ns2.p20.dynect.net ns3.p20.dynect.net ns4.p20.dynect.net
March 21, 2011	NS1.highwire.org NS3.highwire.org NS5.highwire.org	→	NS1.highwire.org NS2.highwire.org NS3.highwire.org NS5.highwire.org hw-dc1.highwire.org hw-dc2.highwire.org
February 2, 2011	ns1.highwire.org ns3.highwire.org ns5.highwire.org	→	NS1.highwire.org NS3.highwire.org NS5.highwire.org
December 13, 2010	NS1.highwire.org NS3.highwire.org NS5.highwire.org	→	ns1.highwire.org ns3.highwire.org ns5.highwire.org
View all history of variations.

Public registrar record:

Profile

Unique visitors:

Domain age:

26 years and 4 months

Domain worth:

$1,262,148

Health score:

71.37%

Domain score widget:

Domain worth widget:

Smartviper certification:

Social #pnas.org

Social activity: updated 19 Aug 2014

Twitter: 776 tweets (+10 new tweets for the last 7 days)

Google+: 187 shares (+187 new shares for the last 42 days)

LinkedIn: 28 likes

Delicious: 747 bookmarks (+747 new bookmarks for the last 49 days)

Facebook:

1,824 likes (+22 likes for the last 7 days)

1,643 shares (+19 shares for the last 7 days)

951 comments (+7 comments for the last 7 days)

Smartviper reviews:

Social Contacts:

Facebook

Similar sites

Tags:

the national

Related domains:bases on topics

Advertising

AdSense Checker: (AdSense Checker:)

Is domain banned from using Google Adsense?

Tags prominence:
(important page elements, estimated advertising value)

Ads SERP visibility: based on research of 16,000,000 keywords

Geography

Audience location:

Minimum required screen width is 768 - Please use other device to view

SERP organic visitors pie

Visualizes local performance of organic positions. Positions visibility distribution is presented by Country showing each country's share in %

SEO

Indexed pages:

Backwards:

Homepage links:

HTML validation:

OK

Google updates:

Title:

Proceedings of the National Academy of Sciences

Links from homepages:(detailed)

521 links (from 364 unique hosts)
Examples: metafilter.com, jimmyr.com, slashdot.jp, molbiol.ru, nextbigfuture.com, sargasso.nl, glinden.blogspot.com, nextnature.net, nationalacademies.org, nas.edu, globalwarming.org, vitamincfoundation.org, gnxp.com, sagewisdom.org, sciencegateway.org, kib.ac.cn, maxplanckflorida.org, overstated.net, dienekes.blogspot.com

Smartviper Domain RSS:

SERP organic visibility: based on research of 16,000,000 keywords

Domain name is seen on 15,705 search engine queries. Average position in SERP is 24. Best position in SERP for this domain is #1 (it's found 42 times). Statistical information was collected from April 20, 2012 to April 22, 2012

SERP organic rankings distribution:

Visualizes organic positions distribution for domain pages that were found in top 40 results.

MarkosWeb

Domain research

Network tools

Smartviper services

pnas.org