`calstep-china.com`

DNSSEC	⚠️ Not signed
A	173.255.255.211^{🇺🇸 AKAMAI-LINODE-AP173.255.240.0/20 Akamai Technologies}
		PTR	`li281-211.members.linode.com`
NS	`dns.bizcn.com` ⭐
NS	`ns1.dns.com.cn` ⚠️ Not in zone NS records
		A	240c:4082:ffff:ff01:0:d:0:34a^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.70^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`ns13.dns.com.cn` ⚠️ Not in parent delegation
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
NS	`ns14.dns.com.cn` ⚠️ Not in zone NS records
		A	61.240.129.114^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`ns2.dns.com.cn` ⚠️ Not in parent delegation
		A	240c:4082:ffff:ff01:0:d:0:69^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.76^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.147^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
MX	`mx.c1.icoremail.net` ⭐
		A	89.168.97.82^{🇩🇪 ORACLE-OCI-3189889.168.64.0/18 Oracle Corporation}
		A	128.1.132.100^{🇺🇸 UCLOUD-1128.1.132.0/24 BB Connect Route Object for Customer (Zenlayer)}
			PTR	`ucloud-mxproxy.icoremail.net`
		A	139.162.158.182^{🇩🇪 AKAMAI-LINODE-AP139.162.128.0/19 Akamai Technologies}
			PTR	`li1425-182.members.linode.com`
		A	165.154.163.126^{🇺🇸 UCLOUD-1165.154.163.0/24 UCLOUD INFORMATION TECHNOLOGY (HK) LIMITED FLAT/RM 603 6/F LAWS COMMERCIAL PLAZA 788 CHEUNG SHA WAN ROAD, KL,}
			PTR	`ucloud-mxproxy.icoremail.net`
TXT	`google-site-verification=pdaLgM_x3tZwp45S9YQMoC0E1IUj8PqrdHBm7qPuo08`
TXT	`google-site-verification=wNZTHoLlD0TpDLzQ-G9qq-MS_v1Ej6lKC8ZBwuGxwcY`
TXT	`v=spf1 include:spf.icoremail.net ~all`
SOA	`dns.bizcn.com`abuse@bizcn.com serial=104

`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=1777069846

Subdomains

www.calstep-china.com

Same first word

calstep-china.com

DNS History

10 records (7 active, 3 former)

●NSdns.bizcn.com2020-03-16 → 2026-04-24 · 3 obs

○ 2016-01-27 03:18:48
● 2020-03-16 20:59:06
● 2026-04-24 22:48:02

●NSns1.dns.com.cn2020-03-16 → 2026-04-24 · 3 obs

○ 2016-01-27 03:18:48
● 2020-03-16 20:59:06
● 2026-04-24 22:48:02

●NSns13.dns.com.cn2015-05-27 → 2026-04-24 · 5 obs

● 2015-05-27 13:38:08
● 2016-01-27 03:18:48
○ 2020-03-16 20:59:06
● 2026-03-06 08:42:16
● 2026-04-24 22:48:02

●NSns14.dns.com.cn2015-05-27 → 2026-04-24 · 5 obs

● 2015-05-27 13:38:08
● 2016-01-27 03:18:48
○ 2020-03-16 20:59:06
● 2026-03-06 08:42:16
● 2026-04-24 22:48:02

●NSns2.dns.com.cn2015-05-27 → 2026-04-24 · 2 obs

● 2015-05-27 13:38:08
● 2026-04-24 22:48:02

●MXmx.c1.icoremail.net2015-05-27 → 2026-04-24 · 5 obs

● 2015-05-27 13:38:08
● 2026-03-06 08:42:16
○ 2026-03-19 12:57:06
● 2026-03-28 13:01:32
● 2026-04-24 22:48:02

○A113.10.247.1702015-05-27 → 2017-02-09 · 4 obs

● 2015-05-27 13:38:08
● 2017-02-09 09:49:14
○ 2020-03-16 20:59:06
○ 2026-04-24 22:48:02

●A173.255.255.2112020-03-16 → 2026-04-24 · 3 obs

○ 2017-02-09 09:49:14
● 2020-03-16 20:59:06
● 2026-04-24 22:48:02

○A70.39.84.2332017-02-09 → 2017-02-09 · 4 obs

○ 2015-05-27 13:38:08
● 2017-02-09 09:49:14
○ 2026-03-06 08:42:16
○ 2026-04-24 22:48:02

○CNAMEj.dcoin.co2017-02-09 → 2017-02-09 · 3 obs

● 2017-02-09 09:49:14
○ 2020-03-16 20:59:06
○ 2026-04-24 22:48:02

🔍 DNS Trace

Analysis

Hierarchy

calstep-china.com is the parent of www.calstep-china.com.

IP Addresses

calstep-china.com resolves to a single IP address: 173.255.255.211.

Other host names including linl.com, www.calstep-china.com, 6km.com, pouci.com and www.beke.com share IP numbers with calstep-china.com.

Name Servers

calstep-china.com is delegated to five name servers: dns.bizcn.com, ns13.dns.com.cn, ns14.dns.com.cn, ns1.dns.com.cn and ns2.dns.com.cn.

calstep-china.com at least partially shares name servers with other domains, including hypercube.cn, anjye-tech.com, ilinyu.com, kayhin.com and hardoon.cn.

these name servers are commonly used with ns7.cnmsn.net, ns8.cnmsn.net, ns5.cnmsn.net, ns6.cnmsn.net and dns.cnmsn.net.

Host names with three IP numbers:

ns1.dns.com.cn points to 240c:4082:ffff:ff01:0:d:0:34a, 61.172.183.70 and 61.240.129.114.

ns2.dns.com.cn points to 240c:4082:ffff:ff01:0:d:0:69, 61.172.183.76 and 61.240.129.147.

Host names with one IP number:

ns13.dns.com.cn points to 61.172.183.76.

ns14.dns.com.cn points to 61.240.129.114.

Host names pointing to 61.240.129.114: ns1.dns.com.cn and ns14.dns.com.cn.

Host names pointing to 61.172.183.76: ns2.dns.com.cn and ns13.dns.com.cn.

Mail Servers

calstep-china.com is handled by a single mail server, mx.c1.icoremail.net.

calstep-china.com shares its mail server setup with other domains, including asinoseal.com, kbjxr.com, puxinmachine.com, af-afacility.com and forwa-mould.com.

The mail servers for calstep-china.com are shared with other domains, for instance szchase.com, bocgfih.com, ccc-cn.org, gfsh.com.cn and czxichun.com.

These mail servers are often used together with mx2.c1.icoremail.net, mx3.c1.icoremail.net and mx.corpease.net.

Host mx.c1.icoremail.net resolves to four IPs: 89.168.97.82, 128.1.132.100, 139.162.158.182 and 165.154.163.126.

calstep-china.com - robtex.com