`ctsystem.com`

DNSSEC	⚠️ Not signed
NS	`cts-web2.ctsystem.com` ⭐
NS	`dns.ctsystem.com` ⚠️ Not in zone NS records
		A	211.21.79.38^{🇹🇼 HiNet211.21.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`dns.ctsystem.com`
NS	`dns.hinet.net` ⚠️ Not in zone NS records
		A	2001:b000:168::1^{🇹🇼 HiNet2001:b000:100::/40}
			PTR	`dns.hinet.net`
		A	2001:b000:168::2^{🇹🇼 HiNet2001:b000:100::/40}
			PTR	`dns.hinet.net`
		A	168.95.1.1^{🇹🇼 HiNet168.95.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`dns.hinet.net`
		A	168.95.192.1^{🇹🇼 HiNet168.95.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`dns.hinet.net`
			PTR	`hntp1.hinet.net`
MX	`spam.ctsystem.com` ⭐
		A	59.124.14.91^{🇹🇼 HiNet59.124.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`mail.ctsystem.com`
			PTR	`spam.ctsystem.com`
			PTR	`mail.simpnic.com`
MX	`spam.ctsystem.com.tw`⁽²⁰⁾
		A	59.124.14.91^{🇹🇼 HiNet59.124.0.0/16 (HiNet) Chunghwa Telecom Co., Ltd.}
			PTR	`mail.ctsystem.com`
			PTR	`spam.ctsystem.com`
			PTR	`mail.simpnic.com`
TXT	`MS=ms59659318`
TXT	`google-site-verification=z4Lhr8-b73700SsNvzB8ly7bLpaaUiWRylVqbyfrzUk`
TXT	`v=spf1 ip4:59.124.14.91 ip4:60.248.141.193 include:_spf.willap.jp include:spf...`
TXT	`google-site-verification=LSZu_RdsRSIgMTwJ8J1VLvaWNv2NuCsg5nhAt-4uN1w`
TXT	`MS=ms64898178`
SOA	`cts-web2.ctsystem.com`lambert_chien@ctsystem.com serial=294

`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=1777049586

WOT: SAFE (61/100)

Subdomains

spam.ctsystem.com

www.ctsystem.com

dns.ctsystem.com

Same first word

ctsystem.mn

ctsystem.com

ctsystem.com.tw

ctsystem.se

ctsystem.ru

ctsystem.cz

Similar names

tcsystem.no-ip.org

tcsystem.net

systemct.ru

tcsystem.com

systemtc.com

tcsystem.at

tcsystem.sakura.ne.jp

DNS History

7 records (5 active, 2 former)

●NScts-web2.ctsystem.com2015-08-25 → 2026-04-24 · 6 obs

● 2015-08-25 08:54:54
● 2018-10-09 12:18:42
○ 2026-03-20 15:08:32
○ 2026-04-03 02:46:36
● 2026-04-21 23:01:52
● 2026-04-24 17:06:54

●NSdns.ctsystem.com2015-08-25 → 2026-04-24 · 2 obs

● 2015-08-25 08:54:54
● 2026-04-24 17:06:54

●NSdns.hinet.net2026-03-20 → 2026-04-24 · 3 obs

○ 2018-10-09 12:18:42
● 2026-03-20 15:08:32
● 2026-04-24 17:06:54

●MXspam.ctsystem.com2015-08-25 → 2026-04-24 · 6 obs

● 2015-08-25 08:54:54
● 2018-10-09 12:18:42
○ 2026-03-20 15:08:32
○ 2026-04-03 02:46:36
● 2026-04-21 23:01:52
● 2026-04-24 17:06:54

●MXspam.ctsystem.com.tw2026-04-21 → 2026-04-24 · 3 obs

○ 2026-04-03 02:46:36
● 2026-04-21 23:01:52
● 2026-04-24 17:06:54

○A3.121.89.1712026-04-03 → 2026-04-21 · 5 obs

○ 2026-03-20 15:08:32
● 2026-04-03 02:46:36
● 2026-04-21 23:01:52
○ 2026-04-24 17:06:50
○ 2026-04-24 17:06:54

○A59.124.14.932015-08-25 → 2018-10-09 · 4 obs

● 2015-08-25 08:54:54
● 2018-10-09 12:18:42
○ 2026-03-20 15:08:32
○ 2026-04-24 17:06:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
ctsystem.com	dns.hinet.net, dns.ctsystem.com	1 record

✅ Authoritative Response

Server:211.21.79.38

NS records: dns.hinet.net, dns.ctsystem.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctsystem.com (unsigned zone)

⏱️ Timing

Total: 2632ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	1	`dns.ctsystem.com`
MX	2	`spam.ctsystem.com (pri: 10), spam.ctsystem.com.tw (pri: 20)`
TXT	5	`google-site-verification=z4Lhr8-b73700Ss, v=spf1 ip4:59.124.14.91 ip4:60.248.141.1...`
SOA	1	`cts-web2.ctsystem.com lambert_chien.ctsy`

📌 Glue Records Collected

Total: 1

In-bailiwick: 1 (dns.ctsystem.com)

Analysis

Hierarchy

ctsystem.com is a parent of spam.ctsystem.com, www.ctsystem.com and dns.ctsystem.com.

Name Servers

ctsystem.com is delegated to three name servers: cts-web2.ctsystem.com, dns.ctsystem.com and dns.hinet.net.

ctsystem.com partially shares name servers with other domains; examples include chailease.org.tw, wonder4tech.com, hisen.com.tw, rotary-taiwan.org and ljm.org.tw.

These name servers are commonly used alongside hntp1.hinet.net, dns1.yuding.info, dns.yuding.info, vns2.hinet.net, dns.seed.net.tw, netdo_web, dns.netdoing.com.tw, vm550231160001, dns2.chailease.com.tw and dns.chailease.com.tw.

Host names with four IP numbers: dns.hinet.net points to 2001:b000:168::1, 2001:b000:168::2, 168.95.1.1 and 168.95.192.1.

Host names with one IP number: dns.ctsystem.com points to 211.21.79.38.

Mail Servers

ctsystem.com is handled by two mail servers: spam.ctsystem.com and spam.ctsystem.com.tw.

Some mail servers are shared between ctsystem.com and other domains, for example ctsystem.com.tw.

Host names with one IP number

Host name spam.ctsystem.com points to 59.124.14.91

Host name spam.ctsystem.com.tw points to 59.124.14.91

Host names that point to 59.124.14.91: spam.ctsystem.com and spam.ctsystem.com.tw

ctsystem.com - robtex.com

ctsystem.com

com