`teacourses.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:5d62^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:d0a5^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.93.98^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.165^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`reese.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c75^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reese.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c375^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`reese.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2375^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`reese.ns.cloudflare.com`
		A	108.162.195.117^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reese.ns.cloudflare.com`
		A	162.159.44.117^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reese.ns.cloudflare.com`
		A	172.64.35.117^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reese.ns.cloudflare.com`
NS	`tori.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ae7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0e7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tori.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20e7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tori.ns.cloudflare.com`
		A	108.162.192.231^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
		A	172.64.32.231^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
		A	173.245.58.231^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tori.ns.cloudflare.com`
MX	`mx2.zoho.com` ⭐
		A	204.141.33.44^{🇺🇸 ZohoAS204.141.32.0/23 PNAP-DAL CASE00103239}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.93.98, 172.67.208.165
		IPv6 hints	2606:4700:3031::6815:5d62, 2606:4700:3037::ac43:d0a5
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=74, name=cloudflare-ech.com
SOA	`reese.ns.cloudflare.com`dns@cloudflare.com serial=2407490425

`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=1782428180

Same first word

teacourses.com

Similar names

scaustereo.net

storesauce.com

casseroute.com

uaeescorts.com

eastcourse.com

causestore.com

seatsource.com

DNS History

17 records (9 active, 8 former)

○NSns1.nameserver.net.au2017-09-28 → 2017-09-28 · 3 obs

● 2017-09-28 01:58:20
○ 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

○NSns2.nameserver.net.au2017-09-28 → 2017-09-28 · 3 obs

● 2017-09-28 01:58:20
○ 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

○NSns3.nameserver.net.au2017-09-28 → 2017-09-28 · 3 obs

● 2017-09-28 01:58:20
○ 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

●NSreese.ns.cloudflare.com2026-06-13 → 2026-06-25 · 3 obs

○ 2017-09-28 01:58:20
● 2026-06-13 18:08:34
● 2026-06-25 23:11:58

●NStori.ns.cloudflare.com2026-06-13 → 2026-06-25 · 3 obs

○ 2017-09-28 01:58:20
● 2026-06-13 18:08:34
● 2026-06-25 23:11:58

●MXmx.zoho.com2026-06-13 → 2026-06-25 · 2 obs

● 2026-06-13 18:08:34
● 2026-06-25 23:11:58

●MXmx2.zoho.com2026-06-13 → 2026-06-25 · 2 obs

● 2026-06-13 18:08:34
● 2026-06-25 23:11:58

●MXmx3.zoho.com2026-06-13 → 2026-06-25 · 2 obs

● 2026-06-13 18:08:34
● 2026-06-25 23:11:58

●A104.21.93.982026-06-25 → 2026-06-25 · 2 obs

○ 2026-06-13 18:08:34
● 2026-06-25 23:11:58

○A112.140.180.1522017-09-28 → 2017-09-28 · 3 obs

● 2017-09-28 01:58:20
○ 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

●A172.67.208.1652026-06-25 → 2026-06-25 · 2 obs

○ 2026-06-13 18:08:34
● 2026-06-25 23:11:58

○A188.114.96.02026-06-13 → 2026-06-13 · 3 obs

○ 2017-09-28 01:58:20
● 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

○A188.114.97.02026-06-13 → 2026-06-13 · 3 obs

○ 2017-09-28 01:58:20
● 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

●A2606:4700:3031::6815:5d622026-06-25 → 2026-06-25 · 2 obs

○ 2026-06-13 18:08:34
● 2026-06-25 23:11:58

●A2606:4700:3037::ac43:d0a52026-06-25 → 2026-06-25 · 2 obs

○ 2026-06-13 18:08:34
● 2026-06-25 23:11:58

○A2a06:98c1:3120::2026-06-13 → 2026-06-13 · 3 obs

○ 2017-09-28 01:58:20
● 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

○A2a06:98c1:3121::2026-06-13 → 2026-06-13 · 3 obs

○ 2017-09-28 01:58:20
● 2026-06-13 18:08:34
○ 2026-06-25 23:11:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, e.gtld-servers.net, g.gtld-servers.net, i.gtld-servers.net...	-
teacourses.com	tori.ns.cloudflare.com, reese.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.231

NS records: tori.ns.cloudflare.com, reese.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for teacourses.com (unsigned zone)

⏱️ Timing

Total: 1017ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.93.98, 172.67.208.165`
AAAA	2	`2606:4700:3031::6815:5d62, 2606:4700:3037::ac43:d0a5`
NS	2	`reese.ns.cloudflare.com, tori.ns.cloudflare.com`
MX	3	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`reese.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

teacourses.com points to the four IP addresses 104.21.93.98, 172.67.208.165, 2606:4700:3031::6815:5d62 and 2606:4700:3037::ac43:d0a5.

yllier.net, phsmou.org, thelocalcontractor.in plus two other host names have IP numbers in common with teacourses.com.

Name Servers

teacourses.com is delegated to two name servers: reese.ns.cloudflare.com and tori.ns.cloudflare.com.

The name server configuration of teacourses.com is shared with other domains, for instance amp.com.br, parthakashyap.com, binus4d.ai and two others.

At least some of teacourses.com's name servers are shared with other domains, for example winwayvalve.com, easyguestestay.com, ductdudes.com and two more.

These name servers tend to be deployed in combination with the name servers violet.ns.cloudflare.com and amalia.ns.cloudflare.com.

Hosts with 6 IP addresses each:

reese.ns.cloudflare.com resolves to 108.162.195.117, 162.159.44.117, 172.64.35.117 and 3 other IP addresses.

tori.ns.cloudflare.com resolves to 108.162.192.231, 172.64.32.231, 173.245.58.231 and 3 other IP addresses.

Mail Servers

The MX records for teacourses.com list three mail servers: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

At least some of the mail servers used by teacourses.com are shared with other domains: herbeautyguide.com, remdubai.com, ahkhan.com and two others among them.

mx2.zoho.com resolves to 204.141.33.44, while mx3.zoho.com and mx.zoho.com both resolve to 204.141.43.44.

mx3.zoho.com and mx.zoho.com are host names that each point to 204.141.43.44 IP addresses.

teacourses.com - robtex.com

teacourses.com

com

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`teacourses.com`

`com`