`bctz.cn`

DNSSEC	⚠️ Not signed
A	47.75.165.230^{🇭🇰 Alibaba-Cloud47.75.128.0/17 Proxy-registered route object}
NS	`dns15.hichina.com` ⭐
		A	2408:4009:501::23^{🇨🇳 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,}
NS	`dns16.hichina.com`
		A	2408:4009:501::24^{🇨🇳 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,}
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034595486

Same first word

bctz.cn

bctz.com

Similar names

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zbct.com.cn

tczb.cn

bztc.com.au

btcz.ir

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czbt.ru

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czbt.com.cn

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bczt.com

zbtc.org

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btcz.in

btcz.app

cbtz.ru

ctbz.com

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tczb.de

DNS History

7 records (3 active, 4 former)

●NSdns15.hichina.com2026-03-01 → 2026-03-27 · 3 obs

○ 2017-03-26 10:55:18
● 2026-03-01 09:55:26
● 2026-03-27 19:50:38

●NSdns16.hichina.com2026-03-01 → 2026-03-27 · 3 obs

○ 2017-03-26 10:55:18
● 2026-03-01 09:55:26
● 2026-03-27 19:50:38

○NSns1.22.cn2017-03-26 → 2017-03-26 · 3 obs

● 2017-03-26 10:55:18
○ 2026-03-01 09:55:26
○ 2026-03-27 19:50:38

○A42.200.35.1392016-07-01 → 2016-07-01 · 4 obs

○ 2015-11-24 08:07:40
● 2016-07-01 00:56:52
○ 2026-03-01 09:55:26
○ 2026-03-27 19:50:38

●A47.75.165.2302026-03-01 → 2026-03-27 · 3 obs

○ 2016-07-01 00:56:52
● 2026-03-01 09:55:26
● 2026-03-27 19:50:38

○A47.90.20.172016-07-01 → 2016-07-01 · 4 obs

○ 2015-11-24 08:07:40
● 2016-07-01 00:56:52
○ 2026-03-01 09:55:26
○ 2026-03-27 19:50:38

○A64.62.224.2532015-07-14 → 2015-11-24 · 4 obs

● 2015-07-14 07:46:46
● 2015-11-24 08:07:40
○ 2016-07-01 00:56:52
○ 2026-03-27 19:50:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	c.dns.cn, b.dns.cn, a.dns.cn, e.dns.cn...	-
bctz.cn	dns15.hichina.com, dns16.hichina.com	-

✅ Authoritative Response

Server:39.96.153.42

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bctz.cn (unsigned zone)

⏱️ Timing

Total: 1464ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.75.165.230`
NS	2	`dns16.hichina.com, dns15.hichina.com`
SOA	1	`dns15.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

bctz.cn maps to IP address 47.75.165.230.

Name Servers

Two name servers dns15.hichina.com and dns16.hichina.com are delegated to bctz.cn.

bctz.cn uses the same name server configuration as other domains, such as joyairs.com, cokoo.com.cn, fozusi.com, gameuj.com and tendrones.com.

bctz.cn at least partially shares name servers with other domains such as 737q.com, is-art.net, badamoban.cn, neosystems.shop and tailea.com.

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

Two hosts with nine IPs each:

Host dns15.hichina.com points to 2408:4009:501::23, 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.

Host dns16.hichina.com points to 2408:4009:501::24, 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.

bctz.cn - robtex.com

bctz.cn

cn