`ctbfsc.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:125c^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::ac43:b588^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.18.92^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.181.136^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`mack.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c25^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c325^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mack.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2325^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mack.ns.cloudflare.com`
		A	108.162.195.37^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
		A	162.159.44.37^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
		A	172.64.35.37^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mack.ns.cloudflare.com`
NS	`opal.ns.cloudflare.com`
		A	2606:4700:50::a29f:2664^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`opal.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c264^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`opal.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2264^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`opal.ns.cloudflare.com`
		A	108.162.194.100^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`opal.ns.cloudflare.com`
		A	162.159.38.100^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`opal.ns.cloudflare.com`
		A	172.64.34.100^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`opal.ns.cloudflare.com`
MX	`route3.mx.cloudflare.net` ⭐
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽²⁵⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route1.mx.cloudflare.net`⁽⁴⁷⁾
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.18.92, 172.67.181.136
		IPv6 hints	2606:4700:3031::6815:125c, 2606:4700:3036::ac43:b588
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=56, name=cloudflare-ech.com
SOA	`mack.ns.cloudflare.com`dns@cloudflare.com serial=2402239853

`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=1778415661

Same first word

ctbfsc.com

Similar names

bcftcs.ac.uk

btfcsc.co.uk

bfscct.com

cftbsc.net

ccbtfs.com

DNS History

21 records (9 active, 12 former)

●NSmack.ns.cloudflare.com2026-04-07 → 2026-05-10 · 3 obs

○ 2018-07-20 13:24:08
● 2026-04-07 01:50:44
● 2026-05-10 12:33:08

○NSns01.domaincontrol.com2015-07-25 → 2018-07-20 · 4 obs

● 2015-07-25 19:54:32
● 2018-07-20 13:24:08
○ 2026-04-07 01:50:44
○ 2026-05-10 12:33:08

○NSns02.domaincontrol.com2015-07-25 → 2018-07-20 · 4 obs

● 2015-07-25 19:54:32
● 2018-07-20 13:24:08
○ 2026-04-07 01:50:44
○ 2026-05-10 12:33:08

●NSopal.ns.cloudflare.com2026-04-07 → 2026-05-10 · 3 obs

○ 2018-07-20 13:24:08
● 2026-04-07 01:50:44
● 2026-05-10 12:33:08

○MXalt1.aspmx.l.google.com2015-10-26 → 2016-04-20 · 5 obs

○ 2015-07-25 19:54:32
● 2015-10-26 16:10:46
● 2016-04-20 13:16:54
○ 2017-01-18 07:43:58
○ 2026-05-10 12:33:08

○MXalt2.aspmx.l.google.com2015-10-26 → 2016-04-20 · 5 obs

○ 2015-07-25 19:54:32
● 2015-10-26 16:10:46
● 2016-04-20 13:16:54
○ 2017-01-18 07:43:58
○ 2026-05-10 12:33:08

○MXaspmx.l.google.com2015-10-26 → 2016-04-20 · 5 obs

○ 2015-07-25 19:54:32
● 2015-10-26 16:10:46
● 2016-04-20 13:16:54
○ 2017-01-18 07:43:58
○ 2026-05-10 12:33:08

○MXaspmx2.googlemail.com2015-10-26 → 2016-04-20 · 5 obs

○ 2015-07-25 19:54:32
● 2015-10-26 16:10:46
● 2016-04-20 13:16:54
○ 2017-01-18 07:43:58
○ 2026-05-10 12:33:08

○MXaspmx3.googlemail.com2015-10-26 → 2016-04-20 · 5 obs

○ 2015-07-25 19:54:32
● 2015-10-26 16:10:46
● 2016-04-20 13:16:54
○ 2017-01-18 07:43:58
○ 2026-05-10 12:33:08

○MXmailstore1.secureserver.net2015-07-25 → 2018-07-20 · 7 obs

● 2015-07-25 19:54:32
○ 2015-10-26 16:10:46
○ 2016-04-20 13:16:54
● 2017-01-18 07:43:58
● 2018-07-20 13:24:08
○ 2026-04-07 01:50:44
○ 2026-05-10 12:33:08

○MXpresmtp.ex2.secureserver.net2015-07-25 → 2015-07-25 · 3 obs

● 2015-07-25 19:54:32
○ 2015-10-26 16:10:46
○ 2026-05-10 12:33:08

●MXroute1.mx.cloudflare.net2026-04-07 → 2026-05-10 · 3 obs

○ 2018-07-20 13:24:08
● 2026-04-07 01:50:44
● 2026-05-10 12:33:08

●MXroute2.mx.cloudflare.net2026-04-07 → 2026-05-10 · 3 obs

○ 2018-07-20 13:24:08
● 2026-04-07 01:50:44
● 2026-05-10 12:33:08

●MXroute3.mx.cloudflare.net2026-04-07 → 2026-05-10 · 3 obs

○ 2018-07-20 13:24:08
● 2026-04-07 01:50:44
● 2026-05-10 12:33:08

○MXsmtp.secureserver.net2017-01-18 → 2018-07-20 · 5 obs

○ 2016-04-20 13:16:54
● 2017-01-18 07:43:58
● 2018-07-20 13:24:08
○ 2026-04-07 01:50:44
○ 2026-05-10 12:33:08

●A104.21.18.922026-05-10 → 2026-05-10 · 2 obs

○ 2026-04-07 01:50:44
● 2026-05-10 12:33:08

●A172.67.181.1362026-05-10 → 2026-05-10 · 2 obs

○ 2026-04-07 01:50:44
● 2026-05-10 12:33:08

○A184.168.221.142017-01-18 → 2017-01-18 · 4 obs

○ 2016-04-20 13:16:54
● 2017-01-18 07:43:58
○ 2018-07-20 13:24:08
○ 2026-05-10 12:33:08

○A192.254.233.2312015-07-25 → 2018-07-20 · 6 obs

● 2015-07-25 19:54:32
● 2016-04-20 13:16:54
○ 2017-01-18 07:43:58
● 2018-07-20 13:24:08
○ 2026-04-07 01:50:44
○ 2026-05-10 12:33:08

●A2606:4700:3031::6815:125c2026-05-10 → 2026-05-10 · 2 obs

○ 2026-04-07 01:50:44
● 2026-05-10 12:33:08

●A2606:4700:3036::ac43:b5882026-05-10 → 2026-05-10 · 2 obs

○ 2026-04-07 01:50:44
● 2026-05-10 12:33:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ctbfsc.com	opal.ns.cloudflare.com, mack.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.37

NS records: opal.ns.cloudflare.com, mack.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctbfsc.com (unsigned zone)

⏱️ Timing

Total: 184ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.181.136, 104.21.18.92`
AAAA	2	`2606:4700:3031::6815:125c, 2606:4700:3036::ac43:b588`
NS	2	`mack.ns.cloudflare.com, opal.ns.cloudflare.com`
MX	3	`route3.mx.cloudflare.net (pri: 17), route2.mx.cloudflare.net (pri: 25)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`mack.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

ctbfsc.com points to four IP numbers: 2606:4700:3031::6815:125c, 2606:4700:3036::ac43:b588, 104.21.18.92 and 172.67.181.136.

Other host names, for instance learnzypp.com, direxnvcasino.eu, www.truthaboutdiamonds.com, fortgx.com and unity3ds.com share IP numbers with ctbfsc.com.

Name Servers

ctbfsc.com is delegated to two name servers: mack.ns.cloudflare.com and opal.ns.cloudflare.com.

ctbfsc.com uses the same name server setup as other domains, for instance addictiontorehabilitation.com, takoda-group.com, beachdibs.com, jacsinternational.com and spogpetrochemicals.com.

ctbfsc.com shares name servers with other domains at least partially, for instance 101dumps.cc, andreavermont.online, sangongweb.com, 3191betapp.com.br and pubhub.me.

these name servers are often used with lovisa.ns.cloudflare.com, oswald.ns.cloudflare.com and sterling.ns.cloudflare.com.

Host names with six IP numbers: mack.ns.cloudflare.com points to 2606:4700:58::a29f:2c25, 2803:f800:50::6ca2:c325, 2a06:98c1:50::ac40:2325, 108.162.195.37, 162.159.44.37 and 172.64.35.37; opal.ns.cloudflare.com points to 2606:4700:50::a29f:2664, 2803:f800:50::6ca2:c264, 2a06:98c1:50::ac40:2264, 108.162.194.100, 162.159.38.100 and 172.64.34.100.

Mail Servers

ctbfsc.com is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

ctbfsc.com shares some mail servers with other domains, including hackamai.com, mahonggang.com, zolerick.com, her.ad and safe4life.dk.

Host names with six IP numbers:

route1.mx.cloudflare.net points to 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13

route2.mx.cloudflare.net points to 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19

route3.mx.cloudflare.net points to 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25

ctbfsc.com - robtex.com

ctbfsc.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

`ctbfsc.com`

`com`