`rub.isi.edu`

DNSSEC	⚠️ Not signed
A	128.9.160.170^{🇺🇸 ISI128.9.160.0/20}
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	🔒 Signed (DS record present)
	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=2022825055

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

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DNS History

2 records (2 active, 0 former)

●MXisi.edu2015-07-01 → 2026-05-11 · 2 obs

● 2015-07-01 10:41:50
● 2026-05-11 01:23:40

●A128.9.160.1702015-07-01 → 2026-05-11 · 2 obs

● 2015-07-01 10:41:50
● 2026-05-11 01:23:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	26 records
isi.edu	ns2.isi.edu, ns4.isi.edu, ns3.isi.edu	3 records

✅ Authoritative Response

Server:128.9.40.14

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: 328ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.9.160.170`
MX	1	`isi.edu (pri: 0)`

📌 Glue Records Collected

Total: 29

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

Out-of-bailiwick: 26 (a.edu-servers.net, a.edu-servers.net, b.edu-servers.net...)

Analysis

IP Addresses

rub.isi.edu points to a single IP address: 128.9.160.170.

Other host names, for instance sally.isi.edu, share IP numbers with rub.isi.edu.

Mail Servers

The isi.edu mail server handles rub.isi.edu.

rub.isi.edu shares the same mail server setup as other domains, including rising.isi.edu, loops.isi.edu, perdida.isi.edu, npl.isi.edu and tegu.isi.edu.

isi.edu points to two IP numbers: 141.193.213.20 and 141.193.213.21.

rub.isi.edu - robtex.com

rub.isi.edu

isi.edu