Analytical Reports
Menu

Cs50.org Summary


Cs50.org was created 18 years ago. Receives approximately 5,580 unique visitors per month. Server is located in United States, IP address 185.199.109.153.

Website Info


Creation date 2007-07-07
Expiration date 2021-07-07
Registrar GoDaddy.com, LLC
Name servers
  1. ns-177.awsdns-22.com
  2. ns-2043.awsdns-63.co.uk
  3. ns-1243.awsdns-27.org
  4. ns-700.awsdns-23.net
IP address 185.199.109.153
Server located United States, San Francisco
Host name 185.199.109.153

Alexa Traffic Ranks


Global Rank 3,647,305
Delta (90 Days) 331,339
Most Popular In Country n/a
Country Rank n/a

Whois info


Domain Name: CS50.ORG

Registry Domain ID: D148509287-LROR

Registrar WHOIS Server: whois.godaddy.com

Registrar URL: http://www.godaddy.com

Updated Date: 2020-07-08T15:49:00Z

Creation Date: 2007-07-07T22:25:53Z

Registrar Registration Expiration Date: 2021-07-07T22:25:53Z

Registrar: GoDaddy.com, LLC

Registrar IANA ID: 146

Registrar Abuse Contact Email: abuse@godaddy.com

Registrar Abuse Contact Phone: +1.4806242505

Domain Status: clientTransferProhibited http://www.icann.org/epp#clientTransferProhibited

Domain Status: clientUpdateProhibited http://www.icann.org/epp#clientUpdateProhibited

Domain Status: clientRenewProhibited http://www.icann.org/epp#clientRenewProhibited

Domain Status: clientDeleteProhibited http://www.icann.org/epp#clientDeleteProhibited

Registrant Organization: 

Registrant State/Province: Massachusetts

Registrant Country: US

Registrant Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=CS50.ORG

Admin Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=CS50.ORG

Tech Email: Select Contact Domain Holder link at https://www.godaddy.com/whois/results.aspx?domain=CS50.ORG

Name Server: NS-177.AWSDNS-22.COM

Name Server: NS-2043.AWSDNS-63.CO.UK

Name Server: NS-1243.AWSDNS-27.ORG

Name Server: NS-700.AWSDNS-23.NET

DNSSEC: unsigned

URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/

DNS Records


Host Type TTL Data
cs50.org A 300 ip: 185.199.111.153
cs50.org A 300 ip: 185.199.109.153
cs50.org A 300 ip: 185.199.108.153
cs50.org A 300 ip: 185.199.110.153
cs50.org MX 300 pri: 10
target: aspmx3.googlemail.com
cs50.org MX 300 pri: 5
target: alt1.aspmx.l.google.com
cs50.org MX 300 pri: 5
target: alt2.aspmx.l.google.com
cs50.org MX 300 pri: 1
target: aspmx.l.google.com
cs50.org MX 300 pri: 10
target: aspmx2.googlemail.com
cs50.org NS 86400 target: ns-1243.awsdns-27.org
cs50.org NS 86400 target: ns-177.awsdns-22.com
cs50.org NS 86400 target: ns-2043.awsdns-63.co.uk
cs50.org NS 86400 target: ns-700.awsdns-23.net
cs50.org SOA 900 mname: ns-177.awsdns-22.com
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400
cs50.org TXT 300 txt: v=spf1 include:_spf.google.com include:amazonses.com ~all

HTTP Headers


Connection: keep-alive
Server: GitHub.com
Content-Type: text/html; charset=utf-8
Last-Modified: Thu, 06 Jun 2019 13:36:33 GMT
ETag: W/"5cf916e1-29ea"
Access-Control-Allow-Origin: *
Expires: Sat, 14 Nov 2020 13:38:07 GMT
Cache-Control: max-age=600
X-Proxy-Cache: MISS
X-GitHub-Request-Id: 2A6A:7694:40CB88:4EF23A:5FAFDB67
Accept-Ranges: bytes
Date: Sat, 14 Nov 2020 13:28:07 GMT
Via: 1.1 varnish
Age: 0
X-Served-By: cache-lga21935-LGA
X-Cache: MISS
X-Cache-Hits: 0
X-Timer: S1605360488.762989,VS0,VE14
Vary: Accept-Encoding
X-Fastly-Request-ID: cc4fd23c5b91dc2e8aad3a1aeac4cc2ef496646d
x-encoded-content-encoding: gzip
x-encoded-content-length: 1917

Recently updated domains