`dlrlsummerschool.ca`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:4b2f^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:d5c3^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.75.47^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.213.195^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ivan.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c178^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ivan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2178^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ivan.ns.cloudflare.com`
		A	108.162.193.120^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	172.64.33.120^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	173.245.59.120^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
NS	`luciane.ns.cloudflare.com`
		A	2606:4700:50::a29f:2678^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luciane.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c278^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`luciane.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2278^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`luciane.ns.cloudflare.com`
		A	108.162.194.120^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luciane.ns.cloudflare.com`
		A	162.159.38.120^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luciane.ns.cloudflare.com`
		A	172.64.34.120^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`luciane.ns.cloudflare.com`
MX	`mx.stackmail.com` ⭐
		A	185.151.28.67^{🇬🇧 TWENTYI185.151.28.0/24}
			PTR	`mx.stackmail.com`
TXT	`v=spf1 include:spf.stackmail.com a mx -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.75.47, 172.67.213.195
		IPv6 hints	2606:4700:3030::6815:4b2f, 2606:4700:3031::ac43:d5c3
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=96, name=cloudflare-ech.com
SOA	`ivan.ns.cloudflare.com`dns@cloudflare.com serial=2409617054

`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=2607231900

Same first word

dlrlsummerschool.ca

DNS History

15 records (7 active, 8 former)

○NSdns1.easydns.com2018-05-07 → 2018-05-07 · 3 obs

● 2018-05-07 20:30:52
○ 2026-05-18 03:05:38
○ 2026-07-23 20:15:48

○NSdns2.easydns.net2018-05-07 → 2018-05-07 · 3 obs

● 2018-05-07 20:30:52
○ 2026-05-18 03:05:38
○ 2026-07-23 20:15:48

○NSdns3.easydns.org2018-05-07 → 2018-05-07 · 3 obs

● 2018-05-07 20:30:52
○ 2026-05-18 03:05:38
○ 2026-07-23 20:15:48

●NSivan.ns.cloudflare.com2026-05-18 → 2026-07-23 · 3 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
● 2026-07-23 20:15:48

●NSluciane.ns.cloudflare.com2026-05-18 → 2026-07-23 · 3 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
● 2026-07-23 20:15:48

○NSrush.easydns.com2018-05-07 → 2018-05-07 · 3 obs

● 2018-05-07 20:30:52
○ 2026-05-18 03:05:38
○ 2026-07-23 20:15:48

○MXmx.easymail.ca2018-05-07 → 2018-05-07 · 3 obs

● 2018-05-07 20:30:52
○ 2026-05-18 03:05:38
○ 2026-07-23 20:15:48

●MXmx.stackmail.com2026-05-18 → 2026-07-23 · 3 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
● 2026-07-23 20:15:48

●A104.21.75.472026-05-18 → 2026-07-23 · 3 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
● 2026-07-23 20:15:48

○A159.203.28.2322018-05-07 → 2018-05-07 · 3 obs

● 2018-05-07 20:30:52
○ 2026-05-18 03:05:38
○ 2026-07-23 20:15:48

●A172.67.213.1952026-05-18 → 2026-07-23 · 3 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
● 2026-07-23 20:15:48

●A2606:4700:3030::6815:4b2f2026-07-19 → 2026-07-23 · 3 obs

○ 2026-05-18 03:05:38
● 2026-07-19 17:11:52
● 2026-07-23 20:15:48

○A2606:4700:3030::ac43:d5c32026-05-18 → 2026-05-18 · 4 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
○ 2026-07-19 17:11:52
○ 2026-07-23 20:15:48

●A2606:4700:3031::ac43:d5c32026-07-19 → 2026-07-23 · 3 obs

○ 2026-05-18 03:05:38
● 2026-07-19 17:11:52
● 2026-07-23 20:15:48

○A2606:4700:3032::6815:4b2f2026-05-18 → 2026-05-18 · 4 obs

○ 2018-05-07 20:30:52
● 2026-05-18 03:05:38
○ 2026-07-19 17:11:52
○ 2026-07-23 20:15:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ca	c.ca-servers.ca, d.ca-servers.ca, j.ca-servers.ca, any.ca-servers.ca	-
dlrlsummerschool.ca	ivan.ns.cloudflare.com, luciane.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.120

NS records: ivan.ns.cloudflare.com, luciane.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dlrlsummerschool.ca (unsigned zone)

⏱️ Timing

Total: 638ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.213.195, 104.21.75.47`
AAAA	2	`2606:4700:3031::ac43:d5c3, 2606:4700:3030::6815:4b2f`
NS	2	`ivan.ns.cloudflare.com, luciane.ns.cloudflare.com`
MX	1	`mx.stackmail.com (pri: 10)`
TXT	1	`v=spf1 include:spf.stackmail.com a mx -a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ivan.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

dlrlsummerschool.ca points to the four IP addresses 104.21.75.47, 172.67.213.195, 2606:4700:3030::6815:4b2f and 2606:4700:3031::ac43:d5c3.

Among the host names that share IP numbers with dlrlsummerschool.ca are benjamin.tw, shepetivka.org.ua, aosidan.com and two others.

Name Servers

DNS delegation for dlrlsummerschool.ca points to two name servers: ivan.ns.cloudflare.com and luciane.ns.cloudflare.com.

dlrlsummerschool.ca has the same name server delegation as a number of other domains, such as hikcolegio.com, twins-athens.com, ilristorantinodellavvocato.es and two more.

The name servers of dlrlsummerschool.ca overlap at least partially with those of other domains — among them canzhuoyichangjia.com, imperialsolutions.jp, outofsitelitterbox.com and two more.

These name servers commonly appear alongside the name servers erin.ns.cloudflare.com and raquel.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

ivan.ns.cloudflare.com has IP addresses 108.162.193.120, 172.64.33.120 and 173.245.59.120, plus 3 other.

luciane.ns.cloudflare.com has IP addresses 108.162.194.120, 162.159.38.120 and 172.64.34.120, plus 3 other.

Mail Servers

dlrlsummerschool.ca routes its mail through a single mail server, mx.stackmail.com.

dlrlsummerschool.ca has the same mail server arrangement as a number of other domains, for example onlinemarketingrant.com, onestopflyershop.co.uk, sizzlinjranch.com and two more.

mx.stackmail.com has exactly one IP number: 185.151.28.67.

dlrlsummerschool.ca - robtex.com