`redflag.isi.edu`

DNSSEC	⚠️ Not signed
A	128.9.176.237^{🇺🇸 ISI128.9.176.0/20}
		PTR	`redflag.isi.edu`
MX	`isi.edu` ⭐
		A	141.193.213.20^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
		A	141.193.213.21^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}

`isi.edu`

	DNSSEC	⚠️ Not signed
	A	141.193.213.20^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
	A	141.193.213.21^{🇺🇸 CLOUDFLARESPECTRUM141.193.213.0/24 WPEngine, Inc. 504 Lavaca Street, 1000, Austin, TX 78701, US}
	NS	`mdrinfoblox-gm01.ads.isi.edu` ⭐
	NS	`ns2.isi.edu`
	NS	`ns3.isi.edu`
	NS	`ns4.isi.edu`
	MX	`mxa-006c3502.gslb.gpphosted.com` ⭐
	MX	`mxb-006c3502.gslb.gpphosted.com` ⭐
	TXT	`OSSRH-90447`
	TXT	`_3ji0kq2cjlddas4tqi3mbon3xjhhxps`
	TXT	`apple-domain-verification=5FZgJkmHEGYFXkSg`
	TXT	`docusign=55f9b41e-27b7-49e4-af9e-c11b83854c61`
	TXT	`tgHn89inYU4zTEMfv0T+jS8XykcPIsqF6+lvfjStaf639eXGhSSOSdNlSW/qss6Up3dPCv+X6+8gZ...`
	TXT	`infoblox-domain-mastery=9c12fcf7c63542b120c0636e2605be7f76b23c4fb830989083452...`
	TXT	`atlassian-domain-verification=aNYeVhAS9Ogdeh/aU4x04/fQ9ElE8q0NlhcTa2xB/Ze6113...`
	TXT	`v=spf1 a mx a:ant.isi.edu a:hmail.jitbit.com a:hmail2.jitbit.com ip4:209.85.1...`
	SOA	`mdrinfoblox-gm01.ads.isi.edu`hostmaster@dev.null serial=2022825752

WOT: SAFE (93/100)
rank #8093 globally
rank #267 in the tld
WOT: SAFE (93/100)
📈 Tranco rank: #18,000

PTR for

237.176.9.128.in-addr.arpa

Same first word

redflag.com

redflag.org.au

redflag.se

redflag.us

redflag.ie

redflag.no

redflag.nl

redflag.cc

redflag.cn

redflag.report

redflag.net

redflag.co.uk

redflag.by

redflag.adm.br

redflag.pt

redflag.com.br

redflag.co.za

redflag.ltd

redflag.chat

redflag.ca

redflag.ru

redflag.co

redflag.org

redflag.live

redflag.biz

redflag.eu

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geraldf.net

alfredg.cn

grafeld.eu

galfred.de

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lfdgear.com

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delgraf.com

DNS History

2 records (2 active, 0 former)

●MXisi.edu2015-06-25 → 2026-05-11 · 2 obs

● 2015-06-25 01:24:14
● 2026-05-11 15:46:36

●A128.9.176.2372015-06-25 → 2026-05-11 · 2 obs

● 2015-06-25 01:24:14
● 2026-05-11 15:46:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	-
isi.edu	ns2.isi.edu, ns4.isi.edu, ns3.isi.edu	3 records

✅ Authoritative Response

Server:128.9.49.6

NS records: ns2.isi.edu, ns4.isi.edu, ns3.isi.edu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1435ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.9.176.237`
MX	1	`isi.edu (pri: 0)`

📌 Glue Records Collected

Total: 3

In-bailiwick: 3 (ns2.isi.edu, ns4.isi.edu, ns3.isi.edu)

Analysis

IP Addresses

redflag.isi.edu points to a single IP number: 128.9.176.237.

Mail Servers

redflag.isi.edu is handled by a single mail server, isi.edu.

redflag.isi.edu shares the same mail server setup as other domains, for instance rising.isi.edu, loops.isi.edu, perdida.isi.edu, npl.isi.edu and tegu.isi.edu.

Host isi.edu resolves to two IPs: 141.193.213.20 and 141.193.213.21.

redflag.isi.edu - robtex.com

redflag.isi.edu

isi.edu