cu.ca - dns.ninja

`cu.ca`

DNSSEC	⚠️ Not signed
A	141.118.20.225^{🇨🇦 ASN-TELUS141.118.20.0/24 NET-141-118-0-0-1}
NS	`atcoinns.atco.ca` ⭐
		A	192.210.10.122^{🇨🇦 ASN-TELUS192.210.10.0/24 NETBLK-CUNET}
			PTR	`atcoinns.atco.ca`
NS	`atcodns3.atco.ca`
		A	141.118.20.122^{🇨🇦 ASN-TELUS141.118.20.0/24 NET-141-118-0-0-1}
			PTR	`atcodns3.atco.ca`
NS	`atcoinss.atco.ca`
		A	192.210.5.122^{🇨🇦 ASN-TELUS192.210.5.0/24 NET-192-210-1-0-1}
			PTR	`atcoinss.atco.ca`
MX	`cul-ca.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c942::1^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt3pr01cu00701.inbound.protection.outlook.com`
		A	2a01:111:f403:c942::3^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt6pr01cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:c944::^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yqzpr01cu00900.inbound.protection.outlook.com`
		A	2a01:111:f403:c944::1^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yqzpr01cu01001.inbound.protection.outlook.com`
		A	52.101.190.0^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt5pr01cu00100.inbound.protection.outlook.com`
		A	52.101.190.1^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt3pr01cu00701.inbound.protection.outlook.com`
		A	52.101.190.2^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt3pr01cu00602.inbound.protection.outlook.com`
		A	52.101.192.0^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yqzpr01cu00900.inbound.protection.outlook.com`
TXT	`MS=ms68962593`
SOA	`atcoinns.atco.ca`root@admin.atco.ca serial=85

`ca`

	DNSSEC	🔒 Signed (DS record present)
	NS	`prd-czp-05.corp.cira.ca` ⭐
	NS	`any.ca-servers.ca`
	NS	`c.ca-servers.ca`
	NS	`d.ca-servers.ca`
	NS	`j.ca-servers.ca`
	SOA	`prd-czp-05.corp.cira.ca`admin-dns@cira.ca serial=2606290700

Subdomains

www.cu.ca

Same first word

cu.cm

cu.la

cu.am

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.com.ua

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

Similar names

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

uc.hu

uc.ro

uc.mil

uc.at

uc.rs

uc.ink

uc.wine

uc.schwarz

uc.edu.ve

uc.tel

uc.edu

uc.cl

uc.ac

uc.su

uc.university

uc.cc

uc.fi

uc.my

uc.biz

uc.ac.kr

uc.ag

uc.si

uc.od.ua

uc.com.tw

uc.express

uc.fyi

uc.eu

uc.net

uc.de

uc.tv.br

uc.ly

uc.be

uc.ac.id

uc.edu.py

uc.edu.mx

uc.pt

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

DNS History

8 records (5 active, 3 former)

●NSatcodns3.atco.ca2015-08-25 → 2026-06-29 · 2 obs

● 2015-08-25 12:20:20
● 2026-06-29 08:04:02

●NSatcoinns.atco.ca2015-08-25 → 2026-06-29 · 2 obs

● 2015-08-25 12:20:20
● 2026-06-29 08:04:02

●NSatcoinss.atco.ca2015-08-25 → 2026-06-29 · 2 obs

● 2015-08-25 12:20:20
● 2026-06-29 08:04:02

●MXcul-ca.mail.protection.outlook.com2017-08-03 → 2026-06-29 · 3 obs

○ 2017-05-08 22:17:26
● 2017-08-03 03:49:56
● 2026-06-29 08:04:02

○MXes3.atco.ca2015-08-25 → 2017-05-08 · 4 obs

● 2015-08-25 12:20:20
● 2017-05-08 22:17:26
○ 2017-08-03 03:49:56
○ 2026-06-29 08:04:02

○MXes4.atco.ca2015-08-25 → 2017-05-08 · 4 obs

● 2015-08-25 12:20:20
● 2017-05-08 22:17:26
○ 2017-08-03 03:49:56
○ 2026-06-29 08:04:02

●A141.118.20.2252019-08-11 → 2026-06-29 · 3 obs

○ 2019-01-09 03:02:00
● 2019-08-11 01:48:10
● 2026-06-29 08:04:02

○A192.210.5.412015-08-25 → 2019-01-09 · 4 obs

● 2015-08-25 12:20:20
● 2019-01-09 03:02:00
○ 2019-08-11 01:48:10
○ 2026-06-29 08:04:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ca	c.ca-servers.ca, d.ca-servers.ca, j.ca-servers.ca, any.ca-servers.ca	-
cu.ca	atcoinns.atco.ca, atcodns3.atco.ca, atcoinss.atco.ca	3 records

✅ Authoritative Response

Server:192.210.5.122

NS records: atcoinns.atco.ca, atcodns3.atco.ca, atcoinss.atco.ca

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cu.ca (unsigned zone)

⏱️ Timing

Total: 401ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`141.118.20.225`
NS	3	`atcoinss.atco.ca, atcodns3.atco.ca...`
MX	1	`cul-ca.mail.protection.outlook.com (pri:`
TXT	1	`MS=ms68962593`
SOA	1	`atcoinns.atco.ca root.admin.atco.ca`

📌 Glue Records Collected

Total: 3

Out-of-bailiwick: 3 (atcoinss.atco.ca, atcoinns.atco.ca, atcodns3.atco.ca)

Analysis

Hierarchy

www.cu.ca is delegated beneath cu.ca.

IP Addresses

cu.ca has exactly one IP address — 141.118.20.225.

canadianutilitieslimited.ca, canutilities-holdings.com, canadianutilitieslimited.org plus two other host names have IP numbers in common with cu.ca.

Name Servers

The authoritative name servers for cu.ca are atcodns3.atco.ca, atcoinns.atco.ca and atcoinss.atco.ca — three in total.

There is at least partial name server overlap between cu.ca and other domains — atcogroupofcompanies.com, atcoltd.ca, atcosl.ca and two more among them.

The hostnames atcodns3.atco.ca, atcoinns.atco.ca and atcoinss.atco.ca each resolve to a single IP: atcodns3.atco.ca → 141.118.20.122, atcoinns.atco.ca → 192.210.10.122, atcoinss.atco.ca → 192.210.5.122.

Mail Servers

cu.ca uses one mail server — cul-ca.mail.protection.outlook.com.

The mail server setup of cu.ca matches that of other domains such as canadianutilitieslimited.ca, canutilities-holdings.com, canadianutilitieslimited.org and two others.

cul-ca.mail.protection.outlook.com has 8 IP addresses: 52.101.190.0, 52.101.190.1, 52.101.190.2 plus 5 more.