`ctzb.com`

DNSSEC	⚠️ Not signed
A	183.134.220.60^{🇨🇳 CHINANET-BACKBONE183.128.0.0/11 China Telecom Network}
NS	`dns21.hichina.com` ⭐ ⚠️ Not in parent delegation
		A	2408:4009:501::29^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.40^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.60^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.200^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.220^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.40^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.60^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.100^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.110^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns10.hichina.com` ⚠️ Not in zone NS records
		A	2408:4009:501::18^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.121^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns22.hichina.com` ⚠️ Not in parent delegation
		A	2408:4009:501::30^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.38^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.61^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.198^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.222^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.38^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.61^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.98^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.108^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns9.hichina.com` ⚠️ Not in zone NS records
		A	2408:4009:501::17^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.122^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`dns21.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1778581321

Same first word

ctzb.com

Similar names

btcz.com

tzcb.com.cn

tzcb.com

btcz.in

btcz.app

cbtz.ru

ctbz.com

bctz.com

zcbt.com

tczb.de

tcbz.net.cn

zbct.com.cn

tczb.cn

bztc.com.au

btcz.ir

btcz.info

czbt.ru

zctb.com

ctbz.cn

tcbz.cn

cbzt.ru

cbtz.com

bctz.cn

bctz.net

btcz.rocks

ztcb.cn

ctbz.com.br

cztb.org.cn

zbct.cn

czbt.com.cn

btzc.cn

btcz.cn

zbct.net

ztcb.net

bczt.com

zbtc.org

DNS History

9 records (7 active, 2 former)

●NSdns10.hichina.com2015-10-17 → 2026-05-12 · 2 obs

● 2015-10-17 01:32:36
● 2026-05-12 10:31:48

●NSdns21.hichina.com2026-05-04 → 2026-05-12 · 3 obs

○ 2015-10-17 01:32:36
● 2026-05-04 17:15:30
● 2026-05-12 10:31:48

●NSdns22.hichina.com2026-05-04 → 2026-05-12 · 3 obs

○ 2015-10-17 01:32:36
● 2026-05-04 17:15:30
● 2026-05-12 10:31:48

●NSdns9.hichina.com2015-10-17 → 2026-05-12 · 2 obs

● 2015-10-17 01:32:36
● 2026-05-12 10:31:48

●MXmxbiz1.qq.com2015-10-17 → 2026-05-12 · 2 obs

● 2015-10-17 01:32:36
● 2026-05-12 10:31:48

●MXmxbiz2.qq.com2015-10-17 → 2026-05-12 · 2 obs

● 2015-10-17 01:32:36
● 2026-05-12 10:31:48

○A121.40.59.762016-01-15 → 2017-11-07 · 5 obs

○ 2015-10-17 01:32:36
● 2016-01-15 02:50:30
● 2017-11-07 09:11:40
○ 2026-05-04 17:15:30
○ 2026-05-12 10:31:48

●A183.134.220.602026-05-04 → 2026-05-12 · 3 obs

○ 2017-11-07 09:11:40
● 2026-05-04 17:15:30
● 2026-05-12 10:31:48

○A64.62.224.2532015-05-30 → 2015-05-30 · 3 obs

● 2015-05-30 20:08:34
○ 2015-10-17 01:32:36
○ 2026-05-12 10:31:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, f.gtld-servers.net, d.gtld-servers.net, g.gtld-servers.net...	-
ctzb.com	dns9.hichina.com, dns10.hichina.com	18 records

✅ Authoritative Response

Server:47.118.199.202

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctzb.com (unsigned zone)

⏱️ Timing

Total: 4371ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`183.134.220.60`
NS	2	`dns21.hichina.com, dns22.hichina.com`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
SOA	1	`dns21.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

IP Addresses

ctzb.com resolves to one IP number: 183.134.220.60.

Name Servers

ctzb.com is delegated to four name servers: dns10.hichina.com, dns21.hichina.com, dns22.hichina.com and dns9.hichina.com.

ctzb.com at least partially shares name servers with other domains, for instance kefaltd.com, szarch.cn, 1vps.net, sjylcy.com and qy83811777.com.

These name servers are commonly used with expirens3.hichina.com, expirens4.hichina.com and ns1.alidns.com.

Host names with nine IP numbers:

dns10.hichina.com points to: 2408:4009:501::18, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

dns21.hichina.com points to: 2408:4009:501::29, 39.96.153.40, 39.96.153.60, 47.118.199.200, 47.118.199.220, 120.76.107.40, 120.76.107.60, 139.224.142.100 and 139.224.142.110.

dns22.hichina.com points to: 2408:4009:501::30, 39.96.153.38, 39.96.153.61, 47.118.199.198, 47.118.199.222, 120.76.107.38, 120.76.107.61, 139.224.142.98 and 139.224.142.108.

dns9.hichina.com points to: 2408:4009:501::17, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

Mail Servers

Two mail servers handle ctzb.com: mxbiz1.qq.com and mxbiz2.qq.com.

ctzb.com shares the same mail server setup as other domains, for instance yhao.cn, jemincare.com, ajfz.net, intecsh.com and chengligroup.com.

ctzb.com shares some mail servers with other domains, at least partially, for instance ewoho.com, weit.cn, spreadhealthcare.com, tongbupan.com and cjc120.com.

ctzb.com - robtex.com

ctzb.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

`ctzb.com`

`com`