`mail.oitsec.umn.edu`

DNSSEC	⚠️ Not signed
A	128.101.238.120^{🇺🇸 ASN-UMN128.101.0.0/16 University of Minnesota Office of Information Technology 2218 Univ Ave SE Minneapolis MN 55414 United States}
		PTR	`mail.oitsec.umn.edu`
MX	`mail.oitsec.umn.edu` ⭐
		A	128.101.238.120^{🇺🇸 ASN-UMN128.101.0.0/16 University of Minnesota Office of Information Technology 2218 Univ Ave SE Minneapolis MN 55414 United States}
			PTR	`mail.oitsec.umn.edu`

`oitsec.umn.edu`

	DNSSEC	⚠️ Not signed
	NS	`ns-1.umn.edu` ⭐ ⚠️ Not in parent delegation
	NS	`ns-2.umn.edu` ⚠️ Not in parent delegation
	NS	`ns-3.umn.edu` ⚠️ Not in parent delegation
	MX	`mail.oitsec.umn.edu` ⭐
	TXT	`v=spf1 ip4:128.101.97.192/26 ip4:128.101.238.64/26 ip4:128.101.120.32/27 a mx...`
	SOA	`ns-1.umn.edu`hostmaster@umn.edu serial=25056

WOT: SAFE (66/100)
WOT: SAFE (86/100)

PTR for

120.238.101.128.in-addr.arpa

MX for

Previously MX for

hydra-07.oitsec.umn.edu

Same first word

mail.moo.jp

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DNS History

2 records (2 active, 0 former)

●MXmail.oitsec.umn.edu2015-05-22 → 2026-05-11 · 2 obs

● 2015-05-22 19:09:24
● 2026-05-11 13:02:08

●A128.101.238.1202015-05-22 → 2026-05-11 · 2 obs

● 2015-05-22 19:09:24
● 2026-05-11 13:02:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	-
umn.edu	ns-2.umn.edu, ns-3.umn.edu, ns-1.umn.edu	6 records

✅ Authoritative Response

Server:52.162.90.224

NS records: ns-2.umn.edu, ns-3.umn.edu, ns-1.umn.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for umn.edu (unsigned zone)

⏱️ Timing

Total: 139ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`128.101.238.120`
MX	1	`mail.oitsec.umn.edu (pri: 10)`

📌 Glue Records Collected

Total: 6

In-bailiwick: 6 (ns-2.umn.edu, ns-2.umn.edu, ns-3.umn.edu...)

Analysis

Mail Server Role

mail.oitsec.umn.edu serves mail for dcs1000.oitsec.umn.edu, maroon.oitsec.umn.edu, tempest.spdesktops.umn.edu, oitsec.umn.edu, rt-archive.uis.umn.edu and a few other domains.

IP Addresses

mail.oitsec.umn.edu resolves to one IP number: 128.101.238.120.

Mail Servers

mail.oitsec.umn.edu is served by a single mail server, mail.oitsec.umn.edu.

mail.oitsec.umn.edu shares the same mail server setup as other domains, for instance dcs1000.oitsec.umn.edu, maroon.oitsec.umn.edu, tempest.spdesktops.umn.edu, oitsec.umn.edu and rt-archive.uis.umn.edu.

mail.oitsec.umn.edu resolves to IP 128.101.238.120.

mail.oitsec.umn.edu - robtex.com