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Columbia.edu Columbia University in the City of New York

Online Status
Online

Server IP address resolved: Yes
Http response code: 200
Response time: 1.22 sec.
Last Checked: 07/19/2020

Over the time columbia.edu has been ranked as high as 1,301 in the world, while most of its traffic comes from United States, where it reached as high as 850 position.

Columbia.edu receives about 81,828 unique visitors and 249,575 pageviews per day. The estimated value of columbia.edu is 3,285,000 USD. Each unique visitor makes about 3.05 pageviews on average.

Columbia.edu is registered under .EDU top-level domain. Check other websites in .EDU zone.

At the time of the last check (November 28, 2019) columbia.edu has an expired SSL certificate issued by Internet2 (expired on January 19, 2020). Check other websites using SSL certificates issued by Internet2.

According to our information columbia.edu is a suspicious domain.

Mobile-Friendly test indicates that columbia.edu is well optimized for mobile and tablet devices.

Global Rank
2,726
Average Load Time
1.23sec
Links In Count
37,420
Website Value
$3.3 M
Overview
Last Updated: 11/25/2020
Overall result - "columbia.edu" is NOT 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
columbia.edu is safe.

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

Google Safe Search
Last Updated: 01/29/2019
columbia.edu is not 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
Malware not found at "columbia.edu".
"columbia.edu" is not a phishing page.
"columbia.edu" does not install unwanted software.
"columbia.edu" does not contain harmfull applications.
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: 02/22/2020
columbia.edu is safe.

McAfee assesses columbia.edu 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 columbia.edu for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
columbia.edu child safety isvery good.

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

SSL Information
Domain columbia.edu
Issuer OrganizationInternet2
Issuer InCommon RSA Server CA
Algorithm RSA-SHA256
Valid form 01/19/2018
Expiration 01/19/2020
SignedCertificate is not self signed
Additional Domains columbia.edu
*.columbia.edu
Server Location
New York City
New York
United States
ASN Information

Last Update: 10/09/2020

#
# 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: 14
ASName: COLUMBIA-GW
ASHandle: AS14
RegDate:
Updated: 2010-06-28
Ref: https://rdap.arin.net/registry/autnum/14

OrgName: Columbia University
OrgId: COLUMB
Address: 612 W 115TH ST
City: NEW YORK
StateProv: NY
PostalCode: 10025
Country: US
RegDate:
Updated: 2017-01-28
Ref: https://rdap.arin.net/registry/entity/COLUMB

OrgTechHandle: CU-NOC-ARIN
OrgTechName: Columbia University Computer Operations
OrgTechPhone: +1-212-854-1919
OrgTechEmail: noc@columbia.edu
OrgTechRef: https://rdap.arin.net/registry/entity/CU-NOC-ARIN

OrgAbuseHandle: CUAC-ARIN
OrgAbuseName: COLUMBIA UNIVERSITY ABUSE CONTACT
OrgAbusePhone: +1-212-854-1919
OrgAbuseEmail: abuse@columbia.edu
OrgAbuseRef: https://rdap.arin.net/registry/entity/CUAC-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

This Registry database contains ONLY .EDU domains.
The data in the EDUCAUSE Whois database is provided
by EDUCAUSE for information purposes in order to
assist in the process of obtaining information about
or related to .edu domain registration records.

The EDUCAUSE Whois database is authoritative for the
.EDU domain.

A Web interface for the .EDU EDUCAUSE Whois Server is
available at: http://whois.educause.edu

By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
solicitations via e-mail. The use of electronic processes to
harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.

-------------------------------------------------------------

Domain Name: COLUMBIA.EDU

Registrant:
Columbia University
615 West 131st Street
CUIT - 5th Floor
New York, NY 10027
USA

Administrative Contact:
Domain Admin
Columbia University
615 West 131st Street
CUIT - 5th Floor
New York, NY 10027
USA
+1.2128541919
noc@columbia.edu

Technical Contact:

Columbia University
615 West 131st Street
CUIT - 5th Floor
New York, NY 10027
USA
+1.2128541919
hostmaster@columbia.edu

Name Servers:
NS1.LSE.AC.UK
AUTH2.DNS.COGENTCO.COM
EXT-NS1.COLUMBIA.EDU
AUTH4.DNS.COGENTCO.COM
DNS2.ITD.UMICH.EDU
AUTH1.DNS.COGENTCO.COM
AUTH5.DNS.COGENTCO.COM

Domain record activated: 05-Jul-1985
Domain record last updated: 22-Nov-2019
Domain expires: 31-Jul-2021

DNS Records
HostA RecordTTL
columbia.edu128.59.105.243600
HostMX RecordPriorityTTL
columbia.edumail-in.cc.l.columbia.edu103600
HostNS RecordTTL
columbia.edusns-pb.isc.org3600
columbia.edudns2.itd.umich.edu3600
columbia.eduns1.lse.ac.uk3600
columbia.eduext-ns1.columbia.edu3600
columbia.edusdns1.berkeley.edu3600
HostTXT RecordTTL
columbia.eduv=spf1 ip4:128.59.72.0/24 ip4:207.10.139.0/24 ip4:128.59.213.250 ip4:192.5.43.19 ip4:128.59.176.35 ip4:128.59.176.141 ~all3600
columbia.edugoogle-site-verification=79W02b1NsvPOhVkXxG5gXzAXuxuYquPTXmx_l6KfRok3600
columbia.edudocusign=abbafadf-a495-4889-935f-5fdac37be9033600
columbia.edudocusign=f8b82e15-b287-46b9-9729-a7436d71c4223600
columbia.eduadobe-idp-site-verification=c4c82a5f2bf3cc3ee4ad2ee246c28e17ead150faf152556bc9ca5c068762b8273600
columbia.eduMS=ms885356483600
columbia.edugoogle-site-verification=B93x40FIZF4LI-5cayepjvuwU8ZodIQ09zIDG1gHtIc3600
columbia.eduMS=ms321077223600

ext-ns1.columbia.edu
TTL: 3600
Email address: hostmaster.columbia.edu
Serial: 56441
Refresh: 3600
Retry: 1800
Expire: 2419200
Minimum: 300

Errors
Warnings

Last tested: 06/15/2018

Desktop
Desktop Speed
47%
Desktop Resource Breakdown
Total Resources91
Number of Hosts15
Static Resources22
JavaScript Resources22
CSS Resources5

Last tested: 06/12/2016

Mobile
Mobile Usability
100%
Mobile Speed
66%
Mobile Resource Breakdown
Total Resources13
Number of Hosts4
Static Resources9
JavaScript Resources4
CSS Resources2
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