`studylecturenotes.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:d60c^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:5612^{🇺🇸 Cloudflare2606:4700:3036::/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}
			PTR	`colin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c34b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`colin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:234b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`colin.ns.cloudflare.com`
		A	108.162.195.75^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`colin.ns.cloudflare.com`
		A	162.159.44.75^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`colin.ns.cloudflare.com`
		A	172.64.35.75^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`colin.ns.cloudflare.com`
NS	`diana.ns.cloudflare.com`
		A	2606:4700:50::a29f:2617^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`diana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c217^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`diana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2217^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`diana.ns.cloudflare.com`
		A	108.162.194.23^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`diana.ns.cloudflare.com`
		A	162.159.38.23^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`diana.ns.cloudflare.com`
		A	172.64.34.23^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`diana.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.86.18, 172.67.214.12
		IPv6 hints	2606:4700:3033::ac43:d60c, 2606:4700:3036::6815:5612
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=227, name=cloudflare-ech.com
SOA	`colin.ns.cloudflare.com`dns@cloudflare.com serial=2403704470

`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=1778682956

rank #486321 globally
rank #210877 in the tld

Subdomains

www.studylecturenotes.com

Same first word

studylecturenotes.com

DNS History

13 records (6 active, 7 former)

●NScolin.ns.cloudflare.com2026-02-21 → 2026-05-13 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-05-13 14:52:32

●NSdiana.ns.cloudflare.com2026-02-21 → 2026-05-13 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

●A104.21.86.182026-02-21 → 2026-05-13 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-05-13 14:52:32

●A172.67.214.122026-02-21 → 2026-05-13 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-05-13 14:52:32

○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
○ 2026-05-13 14:52:32

●A2606:4700:3033::ac43:d60c2026-02-21 → 2026-05-13 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-05-13 14:52:32

●A2606:4700:3036::6815:56122026-02-21 → 2026-05-13 · 3 obs

○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-05-13 14:52:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.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: 816ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.86.18, 172.67.214.12`
AAAA	2	`2606:4700:3033::ac43:d60c, 2606:4700:3036::6815:5612`
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 the parent of www.studylecturenotes.com.

IP Addresses

studylecturenotes.com points to four IP numbers: 2606:4700:3033::ac43:d60c, 2606:4700:3036::6815:5612, 104.21.86.18 and 172.67.214.12.

For instance, other host names kupitediplom0027.ru, purolatorax.help, rajvee.in, pp-spa.com and analyst.digital share IP numbers with studylecturenotes.com.

Name Servers

studylecturenotes.com is delegated to two name servers: colin.ns.cloudflare.com and diana.ns.cloudflare.com.

studylecturenotes.com uses the same name server setup as other domains such as designwithpc.com, oniton.com, examplesof.com, hpfreemanpni.org and rtconvention.com.

studylecturenotes.com shares name servers with other domains at least partially, for example purplepeopleaward.no, mabaopai.com, zense.be, pulitoto89top.online and lastexit.ca.

These name servers are commonly used alongside plato.ns.cloudflare.com, laylah.ns.cloudflare.com, etienne.ns.cloudflare.com, noor.ns.cloudflare.com, jewel.ns.cloudflare.com and meg.ns.cloudflare.com.

Host names with six IP numbers: host name colin.ns.cloudflare.com points to: 2606:4700:58::a29f:2c4b, 2803:f800:50::6ca2:c34b, 2a06:98c1:50::ac40:234b, 108.162.195.75, 162.159.44.75 and 172.64.35.75; host name diana.ns.cloudflare.com points to: 2606:4700:50::a29f:2617, 2803:f800:50::6ca2:c217, 2a06:98c1:50::ac40:2217, 108.162.194.23, 162.159.38.23 and 172.64.34.23.

studylecturenotes.com - robtex.com