`studylecturenotes.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:d60c^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:5612^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.86.18^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.214.12^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`colin.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c4b^{Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	2803:f800:50::6ca2:c34b^{Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
		A	2a06:98c1:50::ac40:234b^{Cloudflare2a06:98c1:50::/45}
		A	108.162.195.75^{Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	162.159.44.75^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.35.75^{Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`diana.ns.cloudflare.com`
		A	2606:4700:50::a29f:2617^{Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	2803:f800:50::6ca2:c217^{Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
		A	2a06:98c1:50::ac40:2217^{Cloudflare2a06:98c1:50::/45}
		A	108.162.194.23^{Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	162.159.38.23^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
		A	172.64.34.23^{Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.86.18, 172.67.214.12
		IPv6 hints	2606:4700:3032::ac43:d60c, 2606:4700:3033::6815:5612
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com
SOA	`colin.ns.cloudflare.com`dns@cloudflare.com serial=2407568826

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1783136036

rank #583568 globally
rank #251642 in the tld

Subdomains

www.studylecturenotes.com

Same first word

studylecturenotes.com

DNS History

15 records (6 active, 9 former)

●NScolin.ns.cloudflare.com2026-02-21 → 2026-07-04 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-07-04 03:48:16

●NSdiana.ns.cloudflare.com2026-02-21 → 2026-07-04 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-07-04 03:48:16

○NSdns1.namecheaphosting.com2015-07-19 → 2019-02-26 · 4 obs

● 2015-07-19 21:51:58
● 2019-02-26 10:46:52
○ 2026-02-21 12:13:08
○ 2026-07-04 03:48:16

○NSdns2.namecheaphosting.com2015-07-19 → 2019-02-26 · 4 obs

● 2015-07-19 21:51:58
● 2019-02-26 10:46:52
○ 2026-02-21 12:13:08
○ 2026-07-04 03:48:16

○MXmail.studylecturenotes.com2015-07-19 → 2015-11-16 · 4 obs

● 2015-07-19 21:51:58
● 2015-11-16 12:47:46
○ 2016-02-25 15:44:38
○ 2026-07-04 03:48:16

○MXsmx1.web-hosting.com2016-02-25 → 2019-02-26 · 5 obs

○ 2015-11-16 12:47:46
● 2016-02-25 15:44:38
● 2019-02-26 10:46:52
○ 2026-02-21 12:13:08
○ 2026-07-04 03:48:16

○MXsmx2.web-hosting.com2016-02-25 → 2019-02-26 · 5 obs

○ 2015-11-16 12:47:46
● 2016-02-25 15:44:38
● 2019-02-26 10:46:52
○ 2026-02-21 12:13:08
○ 2026-07-04 03:48:16

○MXsmx3.web-hosting.com2016-02-25 → 2019-02-26 · 5 obs

○ 2015-11-16 12:47:46
● 2016-02-25 15:44:38
● 2019-02-26 10:46:52
○ 2026-02-21 12:13:08
○ 2026-07-04 03:48:16

●A104.21.86.182026-02-21 → 2026-07-04 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-07-04 03:48:16

●A172.67.214.122026-02-21 → 2026-07-04 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-07-04 03:48:16

○A198.187.31.872015-07-19 → 2019-02-26 · 4 obs

● 2015-07-19 21:51:58
● 2019-02-26 10:46:52
○ 2026-02-21 12:13:08
○ 2026-07-04 03:48:16

●A2606:4700:3032::ac43:d60c2026-06-24 → 2026-07-04 · 3 obs

○ 2026-02-21 12:13:08
● 2026-06-24 07:01:20
● 2026-07-04 03:48:16

●A2606:4700:3033::6815:56122026-06-24 → 2026-07-04 · 3 obs

○ 2026-02-21 12:13:08
● 2026-06-24 07:01:20
● 2026-07-04 03:48:16

○A2606:4700:3033::ac43:d60c2026-02-21 → 2026-02-21 · 4 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
○ 2026-06-24 07:01:20
○ 2026-07-04 03:48:16

○A2606:4700:3036::6815:56122026-02-21 → 2026-02-21 · 4 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
○ 2026-06-24 07:01:20
○ 2026-07-04 03:48:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, l.gtld-servers.net...	-
studylecturenotes.com	diana.ns.cloudflare.com, colin.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.75

NS records: diana.ns.cloudflare.com, colin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studylecturenotes.com (unsigned zone)

⏱️ Timing

Total: 760ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.86.18, 172.67.214.12`
AAAA	2	`2606:4700:3033::6815:5612, 2606:4700:3032::ac43:d60c`
NS	2	`colin.ns.cloudflare.com, diana.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`colin.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (diana.ns.cloudflare.com, diana.ns.cloudflare.com, diana.ns.cloudflare.com...)

Analysis

Hierarchy

studylecturenotes.com is a parent domain of www.studylecturenotes.com.

IP Addresses

studylecturenotes.com has four IP addresses: 104.21.86.18, 172.67.214.12, 2606:4700:3032::ac43:d60c and 2606:4700:3033::6815:5612.

Among the host names that share IP numbers with studylecturenotes.com are gsindia.co.in, purolatorax.help, zbxyy.com and two others.

Name Servers

DNS delegation for studylecturenotes.com points to two name servers: colin.ns.cloudflare.com and diana.ns.cloudflare.com.

studylecturenotes.com has the same name server delegation as a number of other domains, such as jsballet.org, foamcanyon.surf, designwithpc.com and two more.

studylecturenotes.com shares at least some of its name servers with other domains, including purplepeopleaward.no, urhan.net, mabaopai.com and two others.

These name servers are routinely co-deployed with the name servers plato.ns.cloudflare.com, amanda.ns.cloudflare.com, etienne.ns.cloudflare.com and two others.

Host names resolving to 6 IP numbers:

colin.ns.cloudflare.com has IP addresses 108.162.195.75, 162.159.44.75 and 172.64.35.75, plus 3 other.

diana.ns.cloudflare.com has IP addresses 108.162.194.23, 162.159.38.23 and 172.64.34.23, plus 3 other.

studylecturenotes.com - robtex.com