ns2.course-notes.org - robtex.com

ns2.course-notes.org

DNSSEC⚠️ Not signed

course-notes.org

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:82e7🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:39b🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.3.155Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.130.231🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgina.ns.cloudflare.com ⭐
NStheo.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXaspmx2.googlemail.com(10)
MXaspmx3.googlemail.com(10)
TXTahrefs-site-verification_261b4423cbced42a77f357444c4c8a1e089059832c98be462744...
TXTbotify-site-verification=bTeSCTDkqm84UWy6mN7uCCqTjhXDoG5X
TXTca3-850f3c080338410abcd78e53272b14a1
TXTv=spf1 include:_spfcf1.course-notes.org include:_spfcf2.course-notes.org incl...
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.3.155, 172.67.130.231
IPv62606:4700:3033::ac43:82e7, 2606:4700:3037::6815:39b
SOAgina.ns.cloudflare.comdns@cloudflare.com serial=2399614757
WOT: SAFE (94/100)
rank #382243 globally
rank #28755 in the tld
WOT: SAFE (94/100)
📈 Tranco rank: #468,339

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gradeschoolhq.com
wakeuptochange.com

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DNS History

1 record (0 active, 1 former)

20162017201820192020202120222023202420252026A50.31.214.110
○A50.31.214.1102015-07-11 → 2016-09-16 · 3 obs
● 2015-07-11 00:40:36
● 2016-09-16 01:04:28
○ 2026-03-25 01:49:44

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
course-notes.orgtheo.ns.cloudflare.com, gina.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.117

NS records: theo.ns.cloudflare.com, gina.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for course-notes.org (unsigned zone)

⏱️ Timing

Total: 288ms | Queries: -

📄 Records

TypeCountSample Data