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.


Online Status
Online

Server IP address resolved: Yes
Http response code: 200
Response time: 0.31 sec.
Last Checked: 06/24/2021

Stackoverflow.com traffic volume is 3,991,448 unique daily visitors and their 15,367,074 pageviews. The web value rate of stackoverflow.com is 201,926,848 USD. Each visitor makes around 4.12 page views on average.

By Alexa's traffic estimates stackoverflow.com placed at 28 position over the world, while the largest amount of its visitors comes from India, where it takes 14 place.

Stackoverflow.com is hosted by FASTLY - Fastly, US in United States; however, we recommend migrating the server to India, as it will speed up stackoverflow.com page load time for the majority of users. See the list of other web pages hosted by FASTLY - Fastly, US.

Stackoverflow.com registered under .COM top-level domain. Check other websites in .COM zone.

The last verification results, performed on (July 30, 2020) stackoverflow.com show that stackoverflow.com has an expired wildcard SSL certificate issued by Let's Encrypt (expired on September 06, 2020). Click “Refresh” button for SSL Information at the Safety Information section. Check the list of websites using SSL certificates issued by Let's Encrypt.

In accordance with Google Safe Browsing, Google Safe Search, Symantec and Web of Trust stackoverflow.com is pretty a safe domain.

Relying Google MobileFriendly test stackoverflow.com is well optimized for mobile and tablet devices.


Global Rank
48
Average Load Time
1.01sec
Links In Count
26,118
Website Value
$188.7 M

Overview
Last Updated: 06/24/2021
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: 08/05/2020
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: 08/11/2020
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: 04/10/2021
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
Domain*.stackexchange.com
Issuer OrganizationLet's Encrypt
IssuerLet's Encrypt Authority X3
AlgorithmRSA-SHA256
Valid form06/08/2020
Expiration09/06/2020
SignedCertificate 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
*.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
stacksnippets.net
superuser.com
Server Location

ASN Information

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

Last Update: 06/03/2021

#
# 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.
#

WHOIS

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: 2021-01-10T16:56:34Z
Creation Date: 2003-12-26T19:18:07Z
Registry Expiry Date: 2022-02-02T11:59:59Z
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: 2021-04-22T12:43:24Z


DNS Records
HostA RecordTTL
stackoverflow.com151.101.193.693600
stackoverflow.com151.101.1.693600
stackoverflow.com151.101.129.693600
stackoverflow.com151.101.65.693600
HostMX RecordPriorityTTL
stackoverflow.comaspmx.l.google.com1300
stackoverflow.comalt3.aspmx.l.google.com10300
stackoverflow.comalt4.aspmx.l.google.com10300
stackoverflow.comalt1.aspmx.l.google.com5300
stackoverflow.comalt2.aspmx.l.google.com5300
HostNS RecordTTL
stackoverflow.comns-1033.awsdns-01.org172800
stackoverflow.comns-358.awsdns-44.com172800
stackoverflow.comns-cloud-e1.googledomains.com172800
stackoverflow.comns-cloud-e2.googledomains.com172800
HostTXT RecordTTL
stackoverflow.comMS=ms52592611300
stackoverflow.comatlassian-domain-verification=byLeZgl3MIcfOqwWuMhq8Fhr/1zem/jIaouJegvDZbBKUU5OqhwDjdpkyYg5CTzm300
stackoverflow.comgoogle-site-verification=ctogLnZNAdc_CXq8yOhODMLpmugGynjxKecKHDz4oL8300
stackoverflow.comgoogle-site-verification=o3EMam8yBGo1yEjyybIiZcOunGHOQKpo8JmOtp9n1BU300
stackoverflow.comgoogle-site-verification=rdWtMbplKjbRHGr2dNONfwkqithlUvjr3u6i8QEz_mo300
stackoverflow.comv=spf1 ip4:198.252.206.0/24 include:_spf1.stackoverflow.com ~all300

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


Errors
Warnings

Last tested: 12/16/2019

Desktop
Desktop Speed
86%

Desktop Resource Breakdown
Total Resources52
Number of Hosts9
Static Resources42
JavaScript Resources7
CSS Resources4

Last tested: 12/16/2019

Mobile
Mobile Usability
67%
Mobile Speed
66%

Mobile Resource Breakdown
Total Resources52
Number of Hosts9
Static Resources42
JavaScript Resources7
CSS Resources4
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