`cour2web.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:dbd^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:8510^{🇺🇸 Cloudflare2606:4700:3033::/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	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.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	204.141.42.56^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.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	104.21.13.189, 172.67.133.16
		IPv6	2606:4700:3033::6815:dbd, 2606:4700:3033::ac43:8510
SOA	`aarav.ns.cloudflare.com`dns@cloudflare.com serial=2398385329

`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=1774467772

Same first word

cour2web.com

DNS History

27 records (11 active, 16 former)

●NSaarav.ns.cloudflare.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

●NSamanda.ns.cloudflare.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

●MXimap.zoho.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

●MXmx.zoho.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

●MXmx2.zoho.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

●MXmx3.zoho.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

●MXsmtp.zoho.com2026-02-20 → 2026-03-25 · 3 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
● 2026-03-25 19:47:12

●A104.21.13.1892026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-03-25 19:47:12

●A172.67.133.162026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-03-25 19:47:12

○A188.114.96.02026-02-20 → 2026-02-20 · 4 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-03-25 19:47:12

○A188.114.97.02026-02-20 → 2026-02-20 · 4 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-03-25 19:47:12

●A2606:4700:3033::6815:dbd2026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-03-25 19:47:12

●A2606:4700:3033::ac43:85102026-03-25 → 2026-03-25 · 3 obs

○ 2026-02-20 21:55:44
● 2026-03-25 19:47:10
● 2026-03-25 19:47:12

○A2a06:98c1:3120::2026-02-20 → 2026-02-20 · 4 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-03-25 19:47:12

○A2a06:98c1:3121::2026-02-20 → 2026-02-20 · 4 obs

○ 2016-08-11 19:52:10
● 2026-02-20 21:55:44
○ 2026-03-25 19:47:10
○ 2026-03-25 19:47:12

○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
○ 2026-03-25 19:47:12

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:108.162.195.60

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: 242ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.13.189, 172.67.133.16`
AAAA	2	`2606:4700:3033::ac43:8510, 2606:4700:3033::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 refers to four IP numbers: 2606:4700:3033::6815:dbd, 2606:4700:3033::ac43:8510, 104.21.13.189 and 172.67.133.16.

Other host names, for instance kawat4dlink.com, fpachicago.com, doubleclick.my.cdn.cloudflare.net, tiantaiyaoye.com and bartolini.com share IP numbers with cour2web.com.

Name Servers

cour2web.com's delegation uses two name servers: aarav.ns.cloudflare.com and amanda.ns.cloudflare.com.

cour2web.com uses the same name server setup as other domains, such as tsrow.com, thecodewizard.net, lbcum.com, lb(0x7075737379).com and musodanbe.com.

cour2web.com at least partially shares name servers with other domains, including buapaktha.go.th, ivlfm.cn, sack.bar, bay2.net and bradandkc.com.