studylecturenotes.com - robtex.com

studylecturenotes.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:d60c🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::6815:5612🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.86.18Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.214.12🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScolin.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c4b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcolin.ns.cloudflare.com
A2803:f800:50::6ca2:c34b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRcolin.ns.cloudflare.com
A2a06:98c1:50::ac40:234b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRcolin.ns.cloudflare.com
A108.162.195.75🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcolin.ns.cloudflare.com
A162.159.44.75Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcolin.ns.cloudflare.com
A172.64.35.75🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRcolin.ns.cloudflare.com
NSdiana.ns.cloudflare.com
A2606:4700:50::a29f:2617🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiana.ns.cloudflare.com
A2803:f800:50::6ca2:c217🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdiana.ns.cloudflare.com
A2a06:98c1:50::ac40:2217🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdiana.ns.cloudflare.com
A108.162.194.23🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiana.ns.cloudflare.com
A162.159.38.23Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiana.ns.cloudflare.com
A172.64.34.23🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiana.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.86.18, 172.67.214.12
IPv6 hints2606:4700:3032::ac43:d60c, 2606:4700:3033::6815:5612
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=251, name=cloudflare-ech.com
SOAcolin.ns.cloudflare.comdns@cloudflare.com serial=2410778922

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1786412659
rank #646296 globally
rank #266884 in the tld

Subdomains

www.studylecturenotes.com

Same first word

studylecturenotes.com

DNS History

15 records (6 active, 9 former)

20162017201820192020202120222023202420252026NScolin.ns.cloudflare.comdiana.ns.cloudflare.comdns1.namecheaphosting.comdns2.namecheaphosting.comMXmail.studylecturenotes.comsmx1.web-hosting.comsmx2.web-hosting.comsmx3.web-hosting.comA104.21.86.18172.67.214.122606:4700:3032::ac43:d60c2606:4700:3033::6815:5612198.187.31.872606:4700:3033::ac43:d60c2606:4700:3036::6815:5612
●NScolin.ns.cloudflare.com2026-02-21 → 2026-08-11 · 3 obs
○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-08-11 02:01:56
●NSdiana.ns.cloudflare.com2026-02-21 → 2026-08-11 · 3 obs
○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
●A104.21.86.182026-02-21 → 2026-08-11 · 3 obs
○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-08-11 02:01:56
●A172.67.214.122026-02-21 → 2026-08-11 · 3 obs
○ 2019-02-26 10:46:52
● 2026-02-21 12:13:08
● 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
●A2606:4700:3032::ac43:d60c2026-06-24 → 2026-08-11 · 3 obs
○ 2026-02-21 12:13:08
● 2026-06-24 07:01:20
● 2026-08-11 02:01:56
●A2606:4700:3033::6815:56122026-06-24 → 2026-08-11 · 3 obs
○ 2026-02-21 12:13:08
● 2026-06-24 07:01:20
● 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56
○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
○ 2026-08-11 02:01:56

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, i.gtld-servers.net, k.gtld-servers.net, e.gtld-servers.net...-
studylecturenotes.comdiana.ns.cloudflare.com, colin.ns.cloudflare.com12 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: 274ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.86.18, 172.67.214.12
AAAA22606:4700:3033::6815:5612, 2606:4700:3032::ac43:d60c
NS2colin.ns.cloudflare.com, diana.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1colin.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 purolatorax.help, rajvee.in, pp-spa.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, mabaopai.com, zense.be and two others.

These name servers are frequently seen alongside plato.ns.cloudflare.com, amanda.ns.cloudflare.com, jewel.ns.cloudflare.com and 4 other name servers.

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.