`ctbuh2015.com`

DNSSEC	⚠️ Not signed
A	104.21.39.180^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.171.42^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elisa.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2636^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c236^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elisa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2236^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elisa.ns.cloudflare.com`
		A	108.162.194.54^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	162.159.38.54^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
		A	172.64.34.54^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elisa.ns.cloudflare.com`
NS	`jack.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b79^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jack.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c179^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jack.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2179^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jack.ns.cloudflare.com`
		A	108.162.193.121^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jack.ns.cloudflare.com`
		A	172.64.33.121^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jack.ns.cloudflare.com`
		A	173.245.59.121^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jack.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.39.180, 172.67.171.42
SOA	`elisa.ns.cloudflare.com`dns@cloudflare.com serial=2407281944

`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=1784926327

Previously MX for

ctbuh2015.com

Subdomains

registration.ctbuh2015.com

Same first word

ctbuh2015.com

DNS History

24 records (4 active, 20 former)

○NSaragorn.ns.cloudflare.com2015-10-24 → 2016-02-26 · 5 obs

○ 2015-06-07 07:39:08
● 2015-10-24 22:59:58
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○NSchloe.ns.cloudflare.com2015-10-24 → 2016-02-26 · 5 obs

○ 2015-06-07 07:39:08
● 2015-10-24 22:59:58
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○NSdns1.easydns.com2015-06-07 → 2015-06-07 · 3 obs

● 2015-06-07 07:39:08
○ 2015-10-24 22:59:58
○ 2026-07-24 20:53:08

●NSelisa.ns.cloudflare.com2026-05-15 → 2026-07-24 · 3 obs

○ 2026-03-06 12:40:04
● 2026-05-15 12:49:08
● 2026-07-24 20:53:08

●NSjack.ns.cloudflare.com2026-05-15 → 2026-07-24 · 3 obs

○ 2026-03-06 12:40:04
● 2026-05-15 12:49:08
● 2026-07-24 20:53:08

○NSmotorhead.easydns.org2015-06-07 → 2015-06-07 · 3 obs

● 2015-06-07 07:39:08
○ 2015-10-24 22:59:58
○ 2026-07-24 20:53:08

○NSnirvana.easydns.net2015-06-07 → 2015-06-07 · 3 obs

● 2015-06-07 07:39:08
○ 2015-10-24 22:59:58
○ 2026-07-24 20:53:08

○NSns1.seohostingplus.com2017-04-10 → 2017-04-10 · 4 obs

○ 2016-02-26 06:33:42
● 2017-04-10 23:15:38
○ 2026-03-06 12:40:04
○ 2026-07-24 20:53:08

○NSns2.seohostingplus.com2017-04-10 → 2017-04-10 · 4 obs

○ 2016-02-26 06:33:42
● 2017-04-10 23:15:38
○ 2026-03-06 12:40:04
○ 2026-07-24 20:53:08

○NSrush.easydns.com2015-06-07 → 2015-06-07 · 3 obs

● 2015-06-07 07:39:08
○ 2015-10-24 22:59:58
○ 2026-07-24 20:53:08

○MXalt1.aspmx.l.google.com2015-06-07 → 2016-02-26 · 4 obs

● 2015-06-07 07:39:08
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○MXalt2.aspmx.l.google.com2015-06-07 → 2016-02-26 · 4 obs

● 2015-06-07 07:39:08
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○MXaspmx.l.google.com2015-06-07 → 2016-02-26 · 4 obs

● 2015-06-07 07:39:08
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○MXaspmx2.googlemail.com2015-06-07 → 2016-02-26 · 4 obs

● 2015-06-07 07:39:08
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○MXaspmx3.googlemail.com2015-06-07 → 2016-02-26 · 4 obs

● 2015-06-07 07:39:08
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○MXctbuh2015.com2017-04-10 → 2017-04-10 · 4 obs

○ 2016-02-26 06:33:42
● 2017-04-10 23:15:38
○ 2026-03-06 12:40:04
○ 2026-07-24 20:53:08

○A104.18.36.2212015-10-24 → 2015-10-24 · 4 obs

○ 2015-06-07 07:39:08
● 2015-10-24 22:59:58
○ 2016-02-26 06:33:42
○ 2026-07-24 20:53:08

○A104.18.37.2212015-10-24 → 2015-10-24 · 4 obs

○ 2015-06-07 07:39:08
● 2015-10-24 22:59:58
○ 2016-02-26 06:33:42
○ 2026-07-24 20:53:08

●A104.21.39.1802026-05-15 → 2026-07-24 · 5 obs

○ 2026-03-06 12:40:04
● 2026-05-15 12:49:08
○ 2026-07-20 13:43:20
● 2026-07-24 20:53:04
● 2026-07-24 20:53:08

●A172.67.171.422026-05-15 → 2026-07-24 · 5 obs

○ 2026-03-06 12:40:04
● 2026-05-15 12:49:08
○ 2026-07-20 13:43:20
● 2026-07-24 20:53:04
● 2026-07-24 20:53:08

○A188.114.96.02026-07-20 → 2026-07-20 · 4 obs

○ 2026-05-15 12:49:08
● 2026-07-20 13:43:20
○ 2026-07-24 20:53:04
○ 2026-07-24 20:53:08

○A188.114.97.02026-07-20 → 2026-07-20 · 4 obs

○ 2026-05-15 12:49:08
● 2026-07-20 13:43:20
○ 2026-07-24 20:53:04
○ 2026-07-24 20:53:08

○A50.17.228.1502015-06-07 → 2016-02-26 · 5 obs

● 2015-06-07 07:39:08
○ 2015-10-24 22:59:58
● 2016-02-26 06:33:42
○ 2017-04-10 23:15:38
○ 2026-07-24 20:53:08

○A69.162.186.842017-04-10 → 2017-04-10 · 4 obs

○ 2016-02-26 06:33:42
● 2017-04-10 23:15:38
○ 2026-03-06 12:40:04
○ 2026-07-24 20:53:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net, d.gtld-servers.net...	-
ctbuh2015.com	jack.ns.cloudflare.com, elisa.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.54

NS records: jack.ns.cloudflare.com, elisa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctbuh2015.com (unsigned zone)

⏱️ Timing

Total: 499ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.171.42, 104.21.39.180`
NS	2	`elisa.ns.cloudflare.com, jack.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elisa.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

ctbuh2015.com is a parent domain of registration.ctbuh2015.com.

IP Addresses

ctbuh2015.com directs to two IP numbers, 104.21.39.180 and 172.67.171.42

Two other host names, along with gameschina.org, greengarden.sg and casino0923.cfd, also share IP numbers with ctbuh2015.com.

Name Servers

ctbuh2015.com has two authoritative name servers — elisa.ns.cloudflare.com and jack.ns.cloudflare.com.

ctbuh2015.com shares its NS records with other domains, for example hypertextcoffee.com, playnoxx.com, review-pages.com and two others.

ctbuh2015.com shares at least some of its name servers with other domains, including tftf2.com, centralland.ca, oeie.net and two others.

These name servers are frequently paired with the name servers max.ns.cloudflare.com and clay.ns.cloudflare.com.

DNS names with 6 IP addresses:

elisa.ns.cloudflare.com points to 108.162.194.54, 162.159.38.54, 172.64.34.54 and 3 other IP addresses.

jack.ns.cloudflare.com points to 108.162.193.121, 172.64.33.121, 173.245.59.121 and 3 other IP addresses.

ctbuh2015.com - robtex.com

ctbuh2015.com

com

Previously MX for

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`ctbuh2015.com`

`com`