isi.edu is not available!

  • DNSSEC verified
  • Website up
  • Not on blocklists
Registered on
Expires on
Last updated
Name servers
  • ns3.isi.edu
  • ns2.isi.edu
  • ns4.isi.edu
DNSSEC
Signed and verified
Checked
Visit isi.edu

Website

Answer
200 OKin 739 ms
Ends at
https://www.isi.edu/
Redirects
  • https://isi.edu/ (302)
Title
Home | Information Sciences Institute
Server
cloudflare
Protocols
HTTP/2, HTTP/3
Certificate
Google Trust Services (WE1) for isi.edu, valid until
www
Answers itself (200 OK)

DNS records

isi.edu

A
TTL 4 hours
MX
TTL 10 min
NS
  • ns2.isi.edu
  • ns3.isi.edu
  • ns4.isi.edu
TTL 4 hours
TXT
TTL 4 hours
SOA
  • Primary server
    mdrinfoblox-gm01.ads.isi.edu
    Contact
    [email protected]
    Serial
    2022963187
    Refresh
    4 hours
    Retry
    24 min
    Expire
    28 days
    Negative TTL
    1 min
TTL 4 hours
CAA
None: any certificate authority may issue for this name

www.isi.edu

A
TTL 4 hours

_dmarc.isi.edu

TXT
TTL 4 hours

As ns4.isi.edu answers them

Reputation

Domain blocklists

  • Spamhaus DBL Not listed
  • SURBL Not listed
  • URIBL Not listed

Rankings

8.15Open PageRank, out of 10
3,771Open PageRank position
1,693Referring domains

From Open PageRank

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: ISI.EDU

Registrant:
	University of Southern California
	Information Sciences Institute
	4676 Admiralty Way, Suite 1001
	Marina del Rey, CA 90292-6695
	USA

Administrative Contact:
	Domain Admin
	USC/Information Sciences Institute
	4676 Admiralty Way; Suite 1001
	Marina del Rey, CA 90292
	USA
	+1.3104488289
	[email protected]

Technical Contact:
	 
	USC/Information Sciences Institute
	4676 Admiralty Way; Suite 1001
	Marina del Rey, CA 90292
	USA
	+1.3104488289
	[email protected]

Name Servers:
	NS3.ISI.EDU
	NS2.ISI.EDU
	NS4.ISI.EDU

Domain record activated:    10-Mar-1986
Domain record last updated: 23-Sep-2025
Domain expires:             31-Jul-2027

DNSSEC

Every link from the root to isi.edu verifies.

. Verified

  • Found 3 DNSKEY records for .
  • DS=20326/SHA-256 verifies DNSKEY=20326/SEP
  • DS=38696/SHA-256 verifies DNSKEY=38696/SEP
  • Found 1 RRSIGs over DNSKEY RRset
  • RRSIG=38696 and DNSKEY=38696/SEP verifies the DNSKEY RRset

edu Verified

  • Found 1 DS records for edu in the . zone
  • DS=35663/SHA-256 has algorithm ECDSAP256SHA256
  • Found 1 RRSIGs over DS RRset
  • RRSIG=8763 and DNSKEY=8763 verifies the DS RRset
  • Found 2 DNSKEY records for edu
  • DS=35663/SHA-256 verifies DNSKEY=35663/SEP
  • Found 1 RRSIGs over DNSKEY RRset
  • RRSIG=35663 and DNSKEY=35663/SEP verifies the DNSKEY RRset

isi.edu Verified

  • Found 1 DS records for isi.edu in the edu zone
  • DS=55346/SHA-256 has algorithm RSASHA256
  • Found 1 RRSIGs over DS RRset
  • RRSIG=32951 and DNSKEY=32951 verifies the DS RRset
  • Found 5 DNSKEY records for isi.edu
  • DS=55346/SHA-256 verifies DNSKEY=55346/SEP
  • Found 3 RRSIGs over DNSKEY RRset
  • RRSIG=2106 over the DNSKEY RRset was made with a key that is not trusted here
  • RRSIG=48022 over the DNSKEY RRset was made with a key that is not trusted here
  • RRSIG=55346 and DNSKEY=55346/SEP verifies the DNSKEY RRset
  • Found 1 RRSIGs over SOA RRset
  • RRSIG=2106 and DNSKEY=2106 verifies the SOA RRset