STACKOVERFLOW.COM Stack Overflow - Where Developers Learn, Share, & Build Careers


stackoverflow.com website information.

stackoverflow.com website servers are located in United States and are responding from following IP address 151.101.193.69. Check the full list of most visited websites located in United States.

stackoverflow.com domain name is registered by .COM top-level domain registry. See the other sites registred in .COM domain zone.

Following name servers are specified for stackoverflow.com domain:

  • ns-358.awsdns-44.com
  • ns-1033.awsdns-01.org
  • ns-cloud-e1.googledomains.com
  • ns-cloud-e2.googledomains.com

and probably website stackoverflow.com is hosted by awsdns-44.com web hosting company. Check the complete list of other most popular websites hosted by awsdns-44.com hosting company.

According to Alexa traffic rank the highest website stackoverflow.com position was 35 (in the world). The lowest Alexa rank position was 86. Now website stackoverflow.com ranked in Alexa database as number 47 (in the world).

Website stackoverflow.com Desktop speed measurement score (84/100) is better than the results of 81.3% of other sites and shows that the page is performing great on desktop computers.

stackoverflow.com Mobile usability score (92/100) is better than the results of 48.11% of other sites and means that the page is mobile-friendly.

Mobile speed measurement score of stackoverflow.com (71/100) is better than the results of 80.02% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

Weekly Rank Report

DateRankChange
Jul-17-2019 476
Jul-16-2019 53-2
Jul-15-2019 51-8
Jul-14-2019 430
Jul-13-2019 433
Jul-12-2019 460
Jul-11-2019 463

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stackoverflow.com Rank History

Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.


stackoverflow.com whois

WHOIS is a query and response protocol that is widely used for querying databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system, but is also used for a wider range of other information.


Domain Name: STACKOVERFLOW.COM
Registry Domain ID: 108907621_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.name.com
Registrar URL: http://www.name.com
Updated Date: 2019-01-11T17:52:14Z
Creation Date: 2003-12-26T19:18:07Z
Registry Expiry Date: 2020-02-02T11:59:59Z
Registrar: Name.com, Inc.
Registrar IANA ID: 625
Registrar Abuse Contact Email: abuse@name.com
Registrar Abuse Contact Phone: 7202492374
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS-1033.AWSDNS-01.ORG
Name Server: NS-358.AWSDNS-44.COM
Name Server: NS-CLOUD-E1.GOOGLEDOMAINS.COM
Name Server: NS-CLOUD-E2.GOOGLEDOMAINS.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2019-06-15T19:57:57Z

stackoverflow.com server information

Servers Location

stackoverflow.com desktop page speed rank

Last tested: 2019-06-15


Desktop Speed Medium
84/100

stackoverflow.com Desktop Speed Test Quick Summary


priority - 12 Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking script resources and 2 blocking CSS resources. This causes a delay in rendering your page.

Approximately 1% of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Remove render-blocking JavaScript:

https://cdn.sstatic.net/Js/stub.en.js?v=036380eacc61

Optimize CSS Delivery of the following:

https://cdn.sstatic.net/Shared/stacks.css?v=e6f9c0ce1d23
https://cdn.sstatic.net/Sites/stackoverflow/primary.css?v=ff60e321b9c8

priority - 3 Optimize images

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

Optimize the following images to reduce their size by 32.1KiB (30% reduction).

Compressing https://s0.2mdn.net/4806710/03202019-103801239-PayPal_-_teal_300x250.jpg could save 15.3KiB (47% reduction).
Compressing https://cdn.sstatic.net/img/favicons-sprite16.png?v=d4eea8c36ff2 could save 13.9KiB (20% reduction).
Compressing https://i.stack.imgur.com/EdUwb.png could save 2.6KiB (72% reduction).
Compressing https://i.stack.imgur.com/bk9VA.png could save 145B (28% reduction).
Compressing https://i.stack.imgur.com/iXVPe.png could save 109B (13% reduction).
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priority - 2 Leverage 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.googletagservices.com/tag/js/gpt.js (15 minutes)
https://www.googletagservices.com/activeview/js/cu…osd.js?cb=%2Fr20100101 (50 minutes)
https://www.googletagservices.com/activeview/js/cu…ner.js?cache=r20110914 (50 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

stackoverflow.com Desktop Resources

Total Resources46
Number of Hosts18
Static Resources29
JavaScript Resources19
CSS Resources3

stackoverflow.com Desktop Resource Breakdown

stackoverflow.com mobile page speed rank

Last tested: 2019-06-15


Mobile Speed Medium
71/100

stackoverflow.com Mobile Speed Test Quick Summary


priority - 40 Eliminate render-blocking JavaScript and CSS in above-the-fold content

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

None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Remove render-blocking JavaScript:

https://cdn.sstatic.net/Js/stub.en.js?v=036380eacc61
https://cdn.sstatic.net/Js/mobile.en.js?v=32a7cb3d19b9

Optimize CSS Delivery of the following:

https://cdn.sstatic.net/Shared/stacks.css?v=e6f9c0ce1d23
https://cdn.sstatic.net/Sites/stackoverflow/mobile.css?v=aa469b5e83cf

priority - 1 Leverage 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.google-analytics.com/analytics.js (2 hours)

stackoverflow.com Mobile Resources

Total Resources18
Number of Hosts9
Static Resources11
JavaScript Resources9
CSS Resources2

stackoverflow.com Mobile Resource Breakdown

stackoverflow.com mobile page usability

Last tested: 2019-06-15


Mobile Usability Good
92/100

stackoverflow.com Mobile Usability Test Quick Summary


priority - 7 Size 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://stacko…/cookie-policy" class="s-link s-link_…rline fc-white">Cookie Policy</a> and 2 others are close to other tap targets.

The tap target <a class="grid--cell fc-…s-notice-close"></a> is close to 1 other tap targets.

The tap target <a class="grid--cell fc-…s-notice-close"></a> is close to 1 other tap targets.

The tap target <a href="/questions/ask">Ask</a> is close to 1 other tap targets.

The tap target <a href="/questions/566…t?lastactivity" class="-time">1 min ago</a> and 191 others are close to other tap targets.

The tap target <a href="/users/5842844/jbarat" class="author">jbarat</a> and 81 others are close to other tap targets.

The tap target <a href="/questions/566…ord-encryption">Spring: password encryption</a> and 75 others are close to other tap targets.

The tap target <a href="/questions/tag…ooth-lowenergy" class="post-tag">bluetooth-lowenergy</a> and 19 others are close to other tap targets.

stackoverflow.com Mobile Resources

Total Resources18
Number of Hosts9
Static Resources11
JavaScript Resources9
CSS Resources2

stackoverflow.com Mobile Resource Breakdown

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stackoverflow.com Ping

Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.


stackoverflow.com TRACEROUTE

Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.