Stackoverflow.com Stack Overflow - Where Developers Learn, Share, & Build Careers

Stack Overflow is the largest, most trusted online community for developers to learn, share their programming knowledge, and build their careers.

Stackoverflow.com Overview

Stackoverflow.com ranking shows that the page is at position 49 over the world, while the bulk of its audience is from China, where it ranks 91.

Stackoverflow.com hosted on FASTLY - Fastly, US servers in United States. To reduce page loading time for the majority of stackoverflow.com users, we recommend migrating the server to China, as it will speed up stackoverflow.com page load time for the majority of users. See the list of other webpages hosted on FASTLY - Fastly, US servers.

In terms of rank-to-traffic ratio, stackoverflow.com has 4,510,074 unique users per day, viewing 15,093,656 pages. The rank based value of stackoverflow.com is 200,381,248 USD. Every user makes 3.62 pageviews on average.

Stackoverflow.com top-level domain belongs to .COM domain zone. Check other webpages in .COM zone.

According the last verification test in October 16, 2022, stackoverflow.com has an expired wildcard SSL certificate issued by Let's Encrypt (expired on December 03, 2022). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by Let's Encrypt.

Based on data from Google Safe Browsing, Google Safe Search, Symantec and Web of Trust stackoverflow.com is a fairly safe domain.

According the Mobile-Friendly test by Google stackoverflow.com is nice optimized for mobile devices and tablets.

Stackoverflow.com Rank Summary

Global Rank

Average Load Time

1.03sec

Links In Count

45,247

Website Value

$185.5 M

Audience Geography. Where are stackoverflow.com visitors located?

Country	Visitors
China CN	16.1%
India IN	15.6%
United States US	11.1%
Iran IR	3.1%
Germany DE	2.3%
Pakistan PK	2%
Brazil BR	2%
Egypt EG	2%
United Kingdom GB	1.9%
Other	43.9%

Country	Pageviews
India IN	16.9%
China CN	12.3%
United States US	10.7%
Iran IR	3.2%
Egypt EG	2.5%
Germany DE	2.3%
Brazil BR	2.2%
Pakistan PK	2.1%
Indonesia ID	2%
Other	45.8%

Country	Rank
Pakistan PK	21
India IN	21
Viet Nam VN	26
Bangladesh BD	28
Nigeria NG	29
Egypt EG	29
Indonesia ID	37
Israel IL	38
Romania RO	43
Singapore SG	44
Iran IR	44
South Africa ZA	47

Where do visitors go on stackoverflow.com?

Subdomain	Pageviews
stackoverflow.com	98.86%
es.stackoverflow.com	0.5%
ru.stackoverflow.com	0.27%
pt.stackoverflow.com	0.25%
other	0.12%

Subdomain	Pageviews per User
stackoverflow.com	3.32
pt.stackoverflow.com	1.7
es.stackoverflow.com	1.6
ru.stackoverflow.com	1.5

Subdomain	Reach
stackoverflow.com	98.7%
es.stackoverflow.com	1.04%
ru.stackoverflow.com	0.6%
pt.stackoverflow.com	0.49%

How popular is stackoverflow.com?

Period	Global Rank	Global Rank Delta
past 3 months	49	2
past month	50	-4
past week	55	1
yesterday	50	-1

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	62	8	8031	4.4%	3.35	-6.944%
30	69	0	769	0.03%	3.32	-0.599%
7	72	3	701	-1.21%	3.39	4%
1	63	8	776	-3%	3.3	-12.79%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	48	2	8830	12%
30	49	-2	8410	0.7%
7	58	7	7470	-5.383%
1	46	-6	9070	10%

Stackoverflow.com Website Safety

Overview

Last Updated: 02/06/2023

Overall result - stackoverflow.com is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 12/01/2022

stackoverflow.com is safe.

Norton ConnectSafe evaluates stackoverflow.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 10/10/2016

stackoverflow.com is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 12/01/2022

stackoverflow.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 10/16/2022

stackoverflow.com is safe.

McAfee assesses stackoverflow.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze stackoverflow.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/09/2019

stackoverflow.com child safety is very good.

The WOT calculates reputation of the stackoverflow.com. This reputation system receives ratings from users and information from third-party sources, assesses the stackoverflow.com for safety features and confirms, whether stackoverflow.com is suitable for children.

SSL Information

SSL Checker Tool

Domain	*.stackexchange.com
Issuer Organization	Let's Encrypt
Issuer	R3
Algorithm	RSA-SHA256
Valid form	09/04/2022
Expiration	12/03/2022
Signed	Certificate is not self signed
Additional Domains	.askubuntu.com .blogoverflow.com .mathoverflow.net .meta.stackexchange.com .meta.stackoverflow.com .serverfault.com .sstatic.net .stackexchange.com .stackoverflow.com .stackoverflow.email .stackoverflowteams.com .superuser.com askubuntu.com blogoverflow.com mathoverflow.net openid.stackauth.com serverfault.com sstatic.net stackapps.com stackauth.com stackexchange.com stackoverflow.blog stackoverflow.com stackoverflow.email stackoverflowteams.com stacksnippets.net superuser.com

Stackoverflow.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 54113
ASN Title: FASTLY - Fastly, US

Last Update: 02/06/2023

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

ASNumber: 54113
ASName: FASTLY
ASHandle: AS54113
RegDate: 2011-10-04
Updated: 2012-03-02
Comment: http://www.fastly.com/
Ref: https://rdap.arin.net/registry/autnum/54113

OrgName: Fastly
OrgId: SKYCA-3
Address: PO Box 78266
City: San Francisco
StateProv: CA
PostalCode: 94107
Country: US
RegDate: 2011-09-16
Updated: 2017-03-30
Ref: https://rdap.arin.net/registry/entity/SKYCA-3

OrgNOCHandle: FNO19-ARIN
OrgNOCName: Fastly Network Operations
OrgNOCPhone: +1-415-404-9374
OrgNOCEmail: noc@fastly.com
OrgNOCRef: https://rdap.arin.net/registry/entity/FNO19-ARIN

OrgTechHandle: FRA19-ARIN
OrgTechName: Fastly RIR Administrator
OrgTechPhone: +1-415-404-9374
OrgTechEmail: rir-admin@fastly.com
OrgTechRef: https://rdap.arin.net/registry/entity/FRA19-ARIN

OrgAbuseHandle: ABUSE4771-ARIN
OrgAbuseName: Abuse Account
OrgAbusePhone: +1-415-496-9353
OrgAbuseEmail: abuse@fastly.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE4771-ARIN

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/whois_tou.html
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/whois_reporting/index.html
#
# Copyright 1997-2018, American Registry for Internet Numbers, Ltd.
#

Stackoverflow.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

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: 2021-05-19T15:15:35Z
Creation Date: 2003-12-26T19:18:07Z
Registry Expiry Date: 2023-02-02T11:59:59Z
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: 2022-03-21T16:29:41Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL
stackoverflow.com	151.101.65.69	300
stackoverflow.com	151.101.1.69	300
stackoverflow.com	151.101.129.69	300
stackoverflow.com	151.101.193.69	300

Host	MX Record	Priority	TTL
stackoverflow.com	aspmx.l.google.com	1	300
stackoverflow.com	alt3.aspmx.l.google.com	10	300
stackoverflow.com	alt4.aspmx.l.google.com	10	300
stackoverflow.com	alt1.aspmx.l.google.com	5	300
stackoverflow.com	alt2.aspmx.l.google.com	5	300

Host	NS Record	TTL
stackoverflow.com	ns-1033.awsdns-01.org	172800
stackoverflow.com	ns-358.awsdns-44.com	172800
stackoverflow.com	ns-cloud-e1.googledomains.com	172800
stackoverflow.com	ns-cloud-e2.googledomains.com	172800

Host	TXT Record	TTL
stackoverflow.com	MS=ms52592611	300
stackoverflow.com	apple-domain-verification=O9jlnJXAQ7sNSZqC	300
stackoverflow.com	atlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5OqhwDjdpkyYg5CTzm	300
stackoverflow.com	docusign=4262531d-29f4-4a62-9f33-ae9f66f5247b	300
stackoverflow.com	google-site-verification=2Bi6SYw5skkRexdtdLPL2gpxeIhLxnYVqITVP9Htl3w	300
stackoverflow.com	google-site-verification=ctogLnZNAdc_CXq8yOhODMLpmugGynjxKecKHDz4oL8	300
stackoverflow.com	google-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU	300
stackoverflow.com	google-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo	300
stackoverflow.com	miro-verification=52f1b93357ce04bdf212ebc8d86304e05a3a3834	300
stackoverflow.com	v=spf1 ip4:198.252.206.0/24 include:_spf1.stackoverflow.com ~all	300

ns-1033.awsdns-01.org
TTL: 900
Email address: awsdns-hostmaster.amazon.com
Serial: 1
Refresh: 7200
Retry: 900
Expire: 1209600
Minimum: 86400

Stackoverflow.com HTML Check

HTML Validation Tool

Errors

Attribute “itemprop” not allowed on element “meta” at this point.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Attribute “and” not allowed on element “a” at this point.

Attribute “aria-expanded” not allowed on element “input” at this point.

Element “div” not allowed as child of element “label” in this context. (Suppressing further errors from this subtree.)

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

The “aria-describedby” attribute must point to an element in the same document.

The “itemprop” attribute was specified, but the element is not a property of any item.

Warnings

The “navigation” role is unnecessary for element “nav”.

The “contentinfo” role is unnecessary for element “footer”.

This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.

Stackoverflow.com Desktop Performance

Last tested: 12/16/2019

Desktop Speed

86%

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

Enable compression

Leverage browser caching

Desktop Resource Breakdown

Total Resources	52
Number of Hosts	9
Static Resources	42
JavaScript Resources	7
CSS Resources	4

Stackoverflow.com Mobile Insights

Last tested: 12/16/2019

Mobile Usability

67%

Size content to viewport

Size tap targets appropriately

Mobile Speed

66%

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

Enable compression

Leverage browser caching

Mobile Resource Breakdown

Total Resources	52
Number of Hosts	9
Static Resources	42
JavaScript Resources	7
CSS Resources	4

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Stackoverflow.com Stack Overflow - Where Developers Learn, Share, & Build Careers

Stack Overflow is the largest, most trusted online community for developers to learn, share​ ​their programming ​knowledge, and build their careers.

Stackoverflow.com Overview

Stackoverflow.com Rank Summary

Stackoverflow.com Website Safety

Stackoverflow.com Hosting Information

Stackoverflow.com Domain Registration and Settings

Stackoverflow.com HTML Check

Stackoverflow.com Desktop Performance

Stackoverflow.com Mobile Insights

Stackoverflow.com Similar Audits

Stackoverflow.com Common Typos

Stack Overflow is the largest, most trusted online community for developers to learn, share their programming knowledge, and build their careers.