cu.edu - dns.ninja

`cu.edu`

DNSSEC	⚠️ Not signed
A	2620:12a:8000::3^{🇺🇸 Fastly2620:12a:8000::/44 Pantheon}
A	2620:12a:8001::3^{🇺🇸 Fastly2620:12a:8000::/44 Pantheon}
A	23.185.0.3^{🇺🇸 Fastly23.185.0.0/24 Pantheon}
NS	`ns9.cu.edu` ⭐
		A	204.228.68.245^{🇺🇸 HOSTING-H213564204.228.68.0/24 CU System UIS, Colorado}
			PTR	`ns9.cu.edu`
NS	`ns10.cu.edu`
		A	204.228.68.246^{🇺🇸 HOSTING-H213564204.228.68.0/24 CU System UIS, Colorado}
			PTR	`ns10.cu.edu`
NS	`ns11.cu.edu`
		A	204.228.69.105^{🇺🇸 HOSTING-H213564204.228.69.0/24 CU System UIS, Colorado}
			PTR	`ns11.cu.edu`
NS	`ns12.cu.edu`
		A	204.228.69.106^{🇺🇸 HOSTING-H213564204.228.69.0/24 CU System UIS, Colorado}
			PTR	`ns12.cu.edu`
NS	`ns13.cu.edu` ⚠️ Not in parent delegation
		A	204.228.71.105^{🇺🇸 HOSTING-H213564204.228.68.0/22 ECS-Infrastructure}
			PTR	`ns13.cu.edu`
MX	`cu-edu.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c922::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bl0pr02cu00702.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::3^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj0pr03cu01403.inbound.protection.outlook.com`
		A	2a01:111:f403:f805::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-co1pr03cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:f912::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-cy5pr03cu00200.inbound.protection.outlook.com`
		A	52.101.41.24^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr03cu01600.inbound.protection.outlook.com`
		A	52.101.41.180^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-byapr04cu00204.inbound.protection.outlook.com`
		A	52.101.41.183^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-byapr04cu00307.inbound.protection.outlook.com`
		A	52.101.50.13^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-mw2pr02cu00605.inbound.protection.outlook.com`
TXT	`SFMC-nCqU91NmdDFREOVQ3Vcqns0MCHTHXiY2MQJOkdMs`
TXT	`SFMC-xe9G0OU862W2jbGpqi9eMwAxsIVjt3WpKzQoRxgy`
TXT	`v=spf1 redirect=cu.edu.on.autospf.email`
TXT	`pardot654853=81d752e752c183e4bd5b21755d75a444a9399bb49c5d9c3f9819199e03158082`
TXT	`aY1MJQkpCIxJn6wwMPnMuChcoRGnFjDmdt25lVIx6Qe5r0bwvtn1HSZiR3LHraXOnnubLy1YdLvaA...`
TXT	`_globalsign-domain-verification=HhVeiSKIzpErKs0wHEAx0o32Z0civrS6plrUOt4M-B`
TXT	`google-site-verification=TvCMRGZn8yRSf8fjN4KGTGsSIOheS1uAX4kNvtjQBcA`
TXT	`MS=35F66365F292BD92898C1F9E92E0B839769891F8`
TXT	`facebook-domain-verification=hk6531shxfomy8mnyv13ugtq5ekonl`
TXT	`1password-site-verification=HUTGTY3IQ5CGFBFFZSVPDZTH7Y`
TXT	`cXbeJ4UDJBg+cxayxIvAK7sNlob/rhFmsvARSfdngBDvXzA9gnPBaF1leueKYuSy6wdUw8rtssKey...`
TXT	`apple-domain-verification=BSVxaFpSdcRib9W6`
TXT	`openai-domain-verification=dv-9jI2YpQaR9499Q0ulBsMn5CG`
SOA	`ns9.cu.edu`ecs-infrastructure@cu.edu 2026-06-10 #1

`edu`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.edu-servers.net` ⭐
	NS	`b.edu-servers.net`
	NS	`c.edu-servers.net`
	NS	`d.edu-servers.net`
	NS	`e.edu-servers.net`
	NS	`f.edu-servers.net`
	NS	`g.edu-servers.net`
	NS	`h.edu-servers.net`
	NS	`i.edu-servers.net`
	NS	`j.edu-servers.net`
	NS	`k.edu-servers.net`
	NS	`l.edu-servers.net`
	NS	`m.edu-servers.net`
	SOA	`a.edu-servers.net`nstld@verisign-grs.com serial=1781246218

rank #47818 globally
rank #890 in the tld
WOT: SAFE (80/100)
📈 Tranco rank: #92,151

Subdomains

ecomm.cu.edu

online.cu.edu

qa.cu.edu

ns4.cu.edu

authmanager.cu.edu

exchange.cu.edu

ns12.cu.edu

imagenow.cu.edu

ns13.cu.edu

ns1.cu.edu

www.cu.edu

pbsf01.cu.edu

ns04.cu.edu

ns2.cu.edu

uisprojects.cu.edu

redirect.cu.edu

ns11.cu.edu

ns9.cu.edu

my.cu.edu

dev.cu.edu

era.cu.edu

communications.cu.edu

prod.cu.edu

ns10.cu.edu

pbsf02.cu.edu

sp.cu.edu

ns3.cu.edu

ns03.cu.edu

vpn1.cu.edu

Same first word

cu.edu.pk

cu

cu.fm

cu.vc

cu.ac.ae

cu.lu

cu.edu.tr

cu.co.kr

cu.edu.ph

cu.hu

cu.net.au

cu.ws

cu.kiev.ua

cu.ac.mw

cu.coop.py

cu.studio

cu.mi.it

cu.org

cu.support

cu.ac

cu.co.th

cu.cx

cu.law

cu.net.tw

cu.by

cu.lt

cu.nl

cu.lv

cu.rs

cu.tc

cu.cz

cu.ru

cu.com.tw

cu.ac.kr

cu.cc.ua

cu.ma

cu.ie

cu.nu

cu.com.pl

cu.careers

cu.se

cu.edu.kz

cu.edu.la

cu.chat

cu.edu.ge

cu.edu.eg

cu.sk.ca

cu.org.tw

cu.edu

cu.com

cu.zone

cu.uz

cu.si

cu.pl

cu.no

cu.st

cu.net

cu.vg

cu.tn

cu.com.au

cu.to

cu.kz

cu.my

cu.gs

cu.ms

cu.edu.so

cu.edu.ng

cu.be

cu.co

cu.ca

cu.ee

cu.fr

cu.cm

cu.la

cu.am

Similar names

uc.life

uc.vc

uc.lv

uc.qld.edu.au

uc.org

uc.zone

uc.edu.ph

uc.kz

uc.or.kr

uc.uk

uc.fm

uc.to

uc.chat

uc.no

uc.org.uy

uc.gen.tr

uc.cz

uc.pl

uc.ms

uc.xyz

uc.hk

uc.edu.au

uc.lc

uc.k12.in.us

uc.com.mx

uc.com.my

uc.edu.co

uc.wtf

uc.sk

uc.gg

uc.net.ua

uc.network

uc.money

uc.ie

uc.com

uc.edu.pe

uc.se

uc.solutions

uc.com.ua

uc.dk

uc.ee

uc.ma

uc.uy

uc.kr.ua

uc.kiev.ua

uc.rw

uc.works

uc.partners

uc.cn

uc.by

DNS History

16 records (9 active, 7 former)

○NSns1.cu.edu2015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

●NSns10.cu.edu2026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

●NSns11.cu.edu2026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

●NSns12.cu.edu2026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

●NSns13.cu.edu2026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

○NSns2.cu.edu2015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

○NSns3.cu.edu2015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

○NSns4.cu.edu2015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

●NSns9.cu.edu2026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

●MXcu-edu.mail.protection.outlook.com2026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

○MXpbsf01.cu.edu2015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

○MXpbsf02.cu.edu2015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

○A192.237.143.1952015-08-19 → 2017-07-28 · 4 obs

● 2015-08-19 03:33:26
● 2017-07-28 23:07:24
○ 2026-02-17 02:47:10
○ 2026-06-12 07:07:58

●A23.185.0.32026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

●A2620:12a:8000::32026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

●A2620:12a:8001::32026-02-17 → 2026-06-12 · 3 obs

○ 2017-07-28 23:07:24
● 2026-02-17 02:47:10
● 2026-06-12 07:07:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	-
cu.edu	ns9.cu.edu, ns10.cu.edu, ns11.cu.edu, ns12.cu.edu	4 records

✅ Authoritative Response

Server:204.228.69.106

NS records: ns9.cu.edu, ns10.cu.edu, ns11.cu.edu, ns12.cu.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cu.edu (unsigned zone)

⏱️ Timing

Total: 604ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`23.185.0.3`
AAAA	2	`2620:12a:8000::3, 2620:12a:8001::3`
NS	5	`ns10.cu.edu, ns11.cu.edu...`
MX	1	`cu-edu.mail.protection.outlook.com (pri:`
TXT	13	`cXbeJ4UDJBg+cxayxIvAK7sNlob/rhFmsvARSfdn, openai-domain-verification=dv-9jI2YpQaR9...`
SOA	1	`ns9.cu.edu ecs-infrastructure.cu.edu`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (ns9.cu.edu, ns10.cu.edu, ns11.cu.edu...)

Analysis

Hierarchy

cu.edu is the parent domain of ecomm.cu.edu, online.cu.edu, qa.cu.edu, ns4.cu.edu, authmanager.cu.edu and a few other host names.

IP Addresses

cu.edu resolves to three IP addresses: 23.185.0.3, 2620:12a:8000::3 and 2620:12a:8001::3.

Two other host names, along with acrcarbon.org, rebels.stemcrew.org and foundations.dev.umich.edu, also share IP numbers with cu.edu.

Name Servers

cu.edu delegates to five name servers: ns10.cu.edu, ns11.cu.edu, ns12.cu.edu and two others.

cu.edu shares at least some of its name servers with other domains, including 68.228.204.in-addr.arpa, qa.cu.edu, cusys.edu and two others.

These name servers are frequently paired with the name servers ns13.cu.edu and ns9.cu.edu.

Host names with one IP number:

ns10.cu.edu resolves to the IP address 204.228.68.246.

ns11.cu.edu resolves to the IP address 204.228.69.105.

ns12.cu.edu resolves to the IP address 204.228.69.106.

ns13.cu.edu resolves to the IP address 204.228.71.105.

ns9.cu.edu resolves to the IP address 204.228.68.245.

Mail Servers

The sole mail server for cu.edu is cu-edu.mail.protection.outlook.com.

With 8 IP addresses total, cu-edu.mail.protection.outlook.com resolves to 52.101.41.24, 52.101.41.180, 52.101.41.183 and 5 others.