`zhikao.com`

DNSSEC	⚠️ Not signed
A	51.195.97.129^{🇫🇷 OVH51.195.0.0/16}
		PTR	`ip129.ip-51-195-97.eu`
NS	`dns27.hichina.com` ⭐
		A	2408:4009:501::35^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.39^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.59^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.199^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.219^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.39^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.59^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.99^{🇨🇳 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	139.224.142.109^{🇨🇳 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	`dns28.hichina.com`
		A	2408:4009:501::36^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.37^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.62^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.197^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.221^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.37^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.62^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.102^{🇨🇳 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	139.224.142.107^{🇨🇳 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	`mx.antispams.com` ⭐
		A	51.38.122.115^{🇫🇷 OVH51.38.0.0/16}
			PTR	`mx.antispams.com`
TXT	`v=spf1 a mx -all`
SOA	`dns27.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=1774646002

🔒 HSTS Preload (+subdomains)

Previously NS for

zhikao.com

Same first word

zhikao.com

Similar names

kaozhi.com

haozki.com

ikozha.ru

ozakih.com

zaihok.com

haziko.hu

DNS History

21 records (4 active, 17 former)

●NSdns27.hichina.com2026-02-26 → 2026-03-27 · 3 obs

○ 2020-01-17 00:44:30
● 2026-02-26 19:00:22
● 2026-03-27 21:32:40

●NSdns28.hichina.com2026-02-26 → 2026-03-27 · 3 obs

○ 2020-01-17 00:44:30
● 2026-02-26 19:00:22
● 2026-03-27 21:32:40

○NSmyns1.fabulous.com2015-06-16 → 2017-01-31 · 4 obs

● 2015-06-16 17:15:06
● 2017-01-31 00:03:40
○ 2020-01-17 00:44:30
○ 2026-03-27 21:32:40

○NSmyns2.fabulous.com2015-06-16 → 2017-01-31 · 4 obs

● 2015-06-16 17:15:06
● 2017-01-31 00:03:40
○ 2020-01-17 00:44:30
○ 2026-03-27 21:32:40

○NSns1.uniregistry-dns.com2020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-31 00:03:40
● 2020-01-17 00:44:30
○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○NSns1.uniregistry-dns.net2020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-31 00:03:40
● 2020-01-17 00:44:30
○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○NSns2.uniregistry-dns.com2020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-31 00:03:40
● 2020-01-17 00:44:30
○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○NSns2.uniregistry-dns.net2020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-31 00:03:40
● 2020-01-17 00:44:30
○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○NSzhikao.com2015-06-16 → 2016-04-25 · 4 obs

● 2015-06-16 17:15:06
● 2016-04-25 13:08:52
○ 2017-01-31 00:03:40
○ 2026-03-27 21:32:40

○MXmailstore1.asia.secureserver.net2015-06-16 → 2016-04-25 · 4 obs

● 2015-06-16 17:15:06
● 2016-04-25 13:08:52
○ 2017-01-31 00:03:40
○ 2026-03-27 21:32:40

●MXmx.antispams.com2026-02-26 → 2026-03-27 · 3 obs

○ 2020-01-17 00:44:30
● 2026-02-26 19:00:22
● 2026-03-27 21:32:40

○MXpostfix.domainstaff.com2020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-31 00:03:40
● 2020-01-17 00:44:30
○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○MXsmtp.asia.secureserver.net2015-06-16 → 2016-04-25 · 4 obs

● 2015-06-16 17:15:06
● 2016-04-25 13:08:52
○ 2017-01-31 00:03:40
○ 2026-03-27 21:32:40

○A128.199.102.2342016-02-08 → 2016-02-08 · 4 obs

○ 2015-11-03 14:51:50
● 2016-02-08 14:43:56
○ 2016-04-25 13:08:52
○ 2026-03-27 21:32:40

○A128.199.255.32017-01-31 → 2017-01-31 · 4 obs

○ 2016-04-25 13:08:52
● 2017-01-31 00:03:40
○ 2020-01-17 00:44:30
○ 2026-03-27 21:32:40

○A128.199.98.1882015-06-16 → 2015-11-03 · 4 obs

● 2015-06-16 17:15:06
● 2015-11-03 14:51:50
○ 2016-02-08 14:43:56
○ 2026-03-27 21:32:40

○A135.125.128.122026-02-26 → 2026-03-27 · 2 obs

○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○A23.224.6.272020-01-17 → 2020-01-17 · 4 obs

○ 2017-01-31 00:03:40
● 2020-01-17 00:44:30
○ 2026-02-26 19:00:22
○ 2026-03-27 21:32:40

○A45.55.10.1962016-04-25 → 2016-04-25 · 4 obs

○ 2016-02-08 14:43:56
● 2016-04-25 13:08:52
○ 2017-01-31 00:03:40
○ 2026-03-27 21:32:40

●A51.195.97.1292026-03-18 → 2026-03-27 · 3 obs

○ 2026-02-26 19:00:22
● 2026-03-18 17:23:50
● 2026-03-27 21:32:40

○A54.38.153.1682026-02-26 → 2026-02-26 · 4 obs

○ 2020-01-17 00:44:30
● 2026-02-26 19:00:22
○ 2026-03-18 17:23:50
○ 2026-03-27 21:32:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net...	-
zhikao.com	dns27.hichina.com, dns28.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.37

NS records: dns27.hichina.com, dns28.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for zhikao.com (unsigned zone)

⏱️ Timing

Total: 672ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`51.195.97.129`
NS	2	`dns28.hichina.com, dns27.hichina.com`
MX	1	`mx.antispams.com (pri: 10)`
TXT	1	`v=spf1 a mx -all`
SOA	1	`dns27.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns27.hichina.com, dns27.hichina.com, dns27.hichina.com...)

Analysis

IP Addresses

zhikao.com resolves to one IP number: 51.195.97.129.

Other host names, for instance xunchong.com, zonedirector.com, xjtv.com, visitexpo.com and xiaolongxia.com share IP numbers with zhikao.com.

Name Servers

zhikao.com's delegation uses two name servers: dns27.hichina.com and dns28.hichina.com.

zhikao.com uses the same name server setup as other domains, such as hzmtjx.com, hazoon.com.cn, ruizaiyun.com, jsdcm.com and wqz168.com.

zhikao.com at least partially shares name servers with other domains, including windstar.cn, easerun.com, jian-jie.com, yunzhusi.com and mmxp.com.

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

Host names with nine IP numbers: The host name dns27.hichina.com points to 2408:4009:501::35, 39.96.153.39, 39.96.153.59, 47.118.199.199, 47.118.199.219, 120.76.107.39, 120.76.107.59, 139.224.142.99 and 139.224.142.109. The host name dns28.hichina.com points to 2408:4009:501::36, 39.96.153.37, 39.96.153.62, 47.118.199.197, 47.118.199.221, 120.76.107.37, 120.76.107.62, 139.224.142.102 and 139.224.142.107.

Mail Servers

A single mail server handles zhikao.com, mx.antispams.com.

zhikao.com shares the same mail server setup as other domains, for instance yadmin.com, special.cc, zamuro.com, macai.com and feelquality.com.

Host name mx.antispams.com resolves to a single IP: 51.38.122.115.

zhikao.com - robtex.com

zhikao.com

com

Previously NS for

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

`zhikao.com`

`com`