cour2web.com - dns.ninja

`cour2web.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:dbd^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:8510^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.13.189^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.133.16^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aarav.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c3c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aarav.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c33c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aarav.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:233c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aarav.ns.cloudflare.com`
		A	108.162.195.60^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aarav.ns.cloudflare.com`
		A	162.159.44.60^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aarav.ns.cloudflare.com`
		A	172.64.35.60^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aarav.ns.cloudflare.com`
NS	`amanda.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a3f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amanda.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c03f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`amanda.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:203f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`amanda.ns.cloudflare.com`
		A	108.162.192.63^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amanda.ns.cloudflare.com`
		A	172.64.32.63^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amanda.ns.cloudflare.com`
		A	173.245.58.63^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amanda.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	`imap.zoho.com`⁽³⁰⁾
		A	204.141.42.29^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
MX	`smtp.zoho.com`⁽³⁰⁾
		A	204.141.32.56^{🇺🇸 ZohoAS204.141.32.0/23 PNAP-DAL CASE00103239}
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`
TXT	`MS=CF3D48EFA6E533F8C09A2A1967DA99D15B496AB7`
TXT	`v=spf1 include:zoho.com ~all`
TXT	`zoho-verification=zb97949312.zmverify.zoho.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.13.189, 172.67.133.16
		IPv6 hints	2606:4700:3035::6815:dbd, 2606:4700:3037::ac43:8510
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=34, name=cloudflare-ech.com
SOA	`aarav.ns.cloudflare.com`dns@cloudflare.com serial=2407000900

`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=1783653902

Same first word

cour2web.com

DNS History

29 records (11 active, 18 former)

●NSaarav.ns.cloudflare.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

●NSamanda.ns.cloudflare.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

○NSns1.cloudns.net2015-08-07 → 2016-08-11 · 4 obs

● 2015-08-07 18:44:06
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○NSns2.cloudns.net2015-08-07 → 2016-08-11 · 4 obs

● 2015-08-07 18:44:06
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○NSns3.cloudns.net2015-08-07 → 2016-08-11 · 4 obs

● 2015-08-07 18:44:06
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○NSns4.cloudns.net2015-08-07 → 2016-08-11 · 4 obs

● 2015-08-07 18:44:06
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXalt1.aspmx.l.google.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXalt2.aspmx.l.google.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXaspmx.l.google.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXaspmx2.l.googlemail.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXaspmx3.l.googlemail.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXaspmx4.l.googlemail.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

○MXaspmx5.l.googlemail.com2015-11-25 → 2016-08-11 · 4 obs

● 2015-11-25 16:53:08
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

●MXimap.zoho.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

●MXmx.zoho.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

●MXmx2.zoho.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

●MXmx3.zoho.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

●MXsmtp.zoho.com2026-02-20 → 2026-07-10 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-07-10 03:40:28

●A104.21.13.1892026-03-25 → 2026-07-10 · 6 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-05-11 11:15:04
○ 2026-05-22 14:00:48
● 2026-06-01 04:42:14
● 2026-07-10 03:40:28

●A172.67.133.162026-03-25 → 2026-07-10 · 6 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-05-11 11:15:04
○ 2026-05-22 14:00:48
● 2026-06-01 04:42:14
● 2026-07-10 03:40:28

○A188.114.96.02026-02-20 → 2026-05-22 · 7 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-05-11 11:15:04
● 2026-05-22 14:00:48
○ 2026-06-01 04:42:14
○ 2026-07-10 03:40:28

○A188.114.97.02026-02-20 → 2026-05-22 · 7 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-05-11 11:15:04
● 2026-05-22 14:00:48
○ 2026-06-01 04:42:14
○ 2026-07-10 03:40:28

○A2606:4700:3033::6815:dbd2026-03-25 → 2026-06-01 · 7 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-05-11 11:15:04
○ 2026-05-22 14:00:48
● 2026-06-01 04:42:14
● 2026-06-01 09:09:40
○ 2026-07-10 03:40:28

○A2606:4700:3033::ac43:85102026-03-25 → 2026-06-01 · 7 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-05-11 11:15:04
○ 2026-05-22 14:00:48
● 2026-06-01 04:42:14
● 2026-06-01 09:09:40
○ 2026-07-10 03:40:28

●A2606:4700:3035::6815:dbd2026-07-10 → 2026-07-10 · 2 obs

○ 2026-06-01 09:09:40
● 2026-07-10 03:40:28

●A2606:4700:3037::ac43:85102026-07-10 → 2026-07-10 · 2 obs

○ 2026-06-01 09:09:40
● 2026-07-10 03:40:28

○A2a06:98c1:3120::2026-02-20 → 2026-05-22 · 7 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-05-11 11:15:04
● 2026-05-22 14:00:48
○ 2026-06-01 04:42:14
○ 2026-07-10 03:40:28

○A2a06:98c1:3121::2026-02-20 → 2026-05-22 · 7 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-05-11 11:15:04
● 2026-05-22 14:00:48
○ 2026-06-01 04:42:14
○ 2026-07-10 03:40:28

○A73.11.159.2442015-08-07 → 2016-08-11 · 4 obs

● 2015-08-07 18:44:06
● 2016-08-11 19:52:10
○ 2026-02-20 21:55:44
○ 2026-07-10 03:40:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, j.gtld-servers.net, a.gtld-servers.net, d.gtld-servers.net...	-
cour2web.com	amanda.ns.cloudflare.com, aarav.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.63

NS records: amanda.ns.cloudflare.com, aarav.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cour2web.com (unsigned zone)

⏱️ Timing

Total: 177ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.133.16, 104.21.13.189`
AAAA	2	`2606:4700:3037::ac43:8510, 2606:4700:3035::6815:dbd`
NS	2	`aarav.ns.cloudflare.com, amanda.ns.cloudflare.com`
MX	5	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)...`
TXT	3	`MS=CF3D48EFA6E533F8C09A2A1967DA99D15B496, v=spf1 include:zoho.com ~all...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aarav.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

cour2web.com points to the four IP addresses 104.21.13.189, 172.67.133.16, 2606:4700:3035::6815:dbd and 2606:4700:3037::ac43:8510.

Additional host names — fpachicago.com, doubleclick.my.cdn.cloudflare.net, kp197.top and two others — share IP numbers with cour2web.com.

Name Servers

cour2web.com is delegated to two name servers: aarav.ns.cloudflare.com and amanda.ns.cloudflare.com.

cour2web.com shares its name server setup with other domains, including tsrow.com, thecodewizard.net, jokerpanelzombie.top and two others.

The name servers of cour2web.com overlap at least partially with those of other domains — among them buapaktha.go.th, sack.bar, bay2.net and two more.

These name servers commonly appear alongside the name servers colin.ns.cloudflare.com and sureena.ns.cloudflare.com.

Host names with 6 IP numbers:

aarav.ns.cloudflare.com resolves to 108.162.195.60, 162.159.44.60, 172.64.35.60 and 3 other IP addresses.

amanda.ns.cloudflare.com resolves to 108.162.192.63, 172.64.32.63, 173.245.58.63 and 3 other IP addresses.

Mail Servers

cour2web.com has five mail servers, which are imap.zoho.com, mx2.zoho.com, mx3.zoho.com and two others.

cour2web.com shares mail servers — at least in part — with other domains, including wed-in-seychelles.com, communitychaplainservices.org, raoio.com and two others.

The mail servers mx.zoho.com and smtp.zoho.com are commonly paired with these mail servers.

Host names pointing to a single IP address:

imap.zoho.com points to 204.141.42.29.

mx2.zoho.com points to 204.141.33.44.

mx3.zoho.com points to 204.141.43.44.

mx.zoho.com points to 204.141.43.44.

smtp.zoho.com points to 204.141.32.56.

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