`china-diamondtool.com`

DNSSEC	⚠️ Not signed
A	203.189.209.213^{🇨🇳 CHINATELECOM-Ctcloud203.189.209.0/24}
NS	`ns1.cnolnic.com` ⭐
		A	240c:4081:8000:1702::4^{🇨🇳 Baidu240c:4081::/32}
		A	106.12.41.178^{🇨🇳 Baidu106.12.32.0/19}
		A	180.76.132.118^{🇨🇳 Baidu180.76.128.0/19}
NS	`ns2.cnolnic.com`
		A	240c:4082:0:5d80::3^{🇨🇳 Baidu240c:4082::/32}
		A	106.12.205.190^{🇨🇳 Baidu106.12.192.0/20 AS38365}
		A	182.61.7.241^{🇨🇳 Baidu182.61.0.0/19}
MX	`mxa136z.chinaemail.cn` ⭐
		A	43.128.31.66^{🇭🇰 TENCENT-NET-AP-CN43.128.0.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES}
		A	43.129.30.92^{🇭🇰 TENCENT-NET-AP-CN43.129.24.0/21}
		A	43.135.96.239^{🇭🇰 TENCENT-NET-AP-CN43.135.64.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES}
		A	159.138.140.216^{🇭🇰 HWCSNET159.138.128.0/20 HUAWEI INTERNATIONAL PTE. LTD. 15A Changi Business Park Central 1 Eightrium 03-03/04}
			PTR	`brhk04.chinaemail.cn`
MX	222.73.22.48⁽¹⁰⁾
MX	`mx136z.chinaemail.cn`⁽¹⁰⁾
		A	43.128.31.66^{🇭🇰 TENCENT-NET-AP-CN43.128.0.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES}
		A	43.129.30.92^{🇭🇰 TENCENT-NET-AP-CN43.129.24.0/21}
		A	43.135.96.239^{🇭🇰 TENCENT-NET-AP-CN43.135.64.0/18 ACEVILLE PTE.LTD. 16 COLLYER QUAY 18-29 INCOME AT RAFFLES}
		A	159.138.140.216^{🇭🇰 HWCSNET159.138.128.0/20 HUAWEI INTERNATIONAL PTE. LTD. 15A Changi Business Park Central 1 Eightrium 03-03/04}
			PTR	`brhk04.chinaemail.cn`
		A	180.76.132.1^{🇨🇳 Baidu180.76.128.0/19}
			PTR	`mxbj01.chinaemail.cn`
TXT	`v=spf1 include:spf.chinaemail.cn -all`
SOA	`ns1.cnolnic.com`root@cnolnic.net 2006-11-24 #1

`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=1778531671

Subdomains

mail.china-diamondtool.com

Same first word

china-diamondtool.com

DNS History

7 records (6 active, 1 former)

●NSns1.cnolnic.com2015-08-04 → 2026-05-11 · 2 obs

● 2015-08-04 19:05:28
● 2026-05-11 20:56:10

●NSns2.cnolnic.com2015-08-04 → 2026-05-11 · 2 obs

● 2015-08-04 19:05:28
● 2026-05-11 20:56:10

●MX222.73.22.482026-04-26 → 2026-05-11 · 3 obs

○ 2015-08-04 19:05:28
● 2026-04-26 08:36:38
● 2026-05-11 20:56:10

●MXmx136z.chinaemail.cn2015-08-04 → 2026-05-11 · 2 obs

● 2015-08-04 19:05:28
● 2026-05-11 20:56:10

●MXmxa136z.chinaemail.cn2015-08-04 → 2026-05-11 · 2 obs

● 2015-08-04 19:05:28
● 2026-05-11 20:56:10

○A124.172.156.622015-08-04 → 2016-11-30 · 4 obs

● 2015-08-04 19:05:28
● 2016-11-30 05:57:24
○ 2026-04-26 08:36:38
○ 2026-05-11 20:56:10

●A203.189.209.2132026-04-26 → 2026-05-11 · 3 obs

○ 2016-11-30 05:57:24
● 2026-04-26 08:36:38
● 2026-05-11 20:56:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, l.gtld-servers.net, d.gtld-servers.net, j.gtld-servers.net...	-
china-diamondtool.com	ns1.cnolnic.com, ns2.cnolnic.com	6 records

✅ Authoritative Response

Server:106.12.205.190

NS records: ns1.cnolnic.com, ns2.cnolnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for china-diamondtool.com (unsigned zone)

⏱️ Timing

Total: 895ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.189.209.213`
NS	2	`ns1.cnolnic.com, ns2.cnolnic.com`
MX	3	`222.73.22.48 (pri: 10), mxa136z.chinaemail.cn (pri: 5)...`
TXT	1	`v=spf1 include:spf.chinaemail.cn -all`
SOA	1	`ns1.cnolnic.com root.cnolnic.net`

📌 Glue Records Collected

Total: 6

Out-of-bailiwick: 6 (ns1.cnolnic.com, ns1.cnolnic.com, ns1.cnolnic.com...)

Analysis

Hierarchy

china-diamondtool.com is the parent of mail.china-diamondtool.com.

IP Addresses

china-diamondtool.com resolves to a single IP address: 203.189.209.213.

Name Servers

china-diamondtool.com's delegation uses two name servers, ns1.cnolnic.com and ns2.cnolnic.com.

china-diamondtool.com shares the same name server setup as other domains, for example xieshui365.com, mtmt.cn, freeie.net, lwf.cn and stfubao.com.

china-diamondtool.com at least partially shares name servers with other domains; for instance tea168.cn.

Host names with three IPs:

ns1.cnolnic.com points to 240c:4081:8000:1702::4, 106.12.41.178 and 180.76.132.118

ns2.cnolnic.com points to 240c:4082:0:5d80::3, 106.12.205.190 and 182.61.7.241

Mail Servers

china-diamondtool.com is handled by three mail servers: mx136z.chinaemail.cn, mxa136z.chinaemail.cn and 222.73.22.48.

The mail servers for china-diamondtool.com are shared with other domains, for instance yusengd.com, cf-logistics.com, pam-cd.com, best-laser.com and guangzhougv.com.

Host names with five IP numbers: The host name mx136z.chinaemail.cn points to 43.128.31.66, 43.129.30.92, 43.135.96.239, 159.138.140.216 and 180.76.132.1.

Host names with four IP numbers: The host name mxa136z.chinaemail.cn points to 43.128.31.66, 43.129.30.92, 43.135.96.239 and 159.138.140.216.

Host names that point to 43.128.31.66: mx136z.chinaemail.cn and mxa136z.chinaemail.cn.

Host names that point to 43.129.30.92: mx136z.chinaemail.cn and mxa136z.chinaemail.cn.

Host names that point to 43.135.96.239: mx136z.chinaemail.cn and mxa136z.chinaemail.cn.

Host names that point to 159.138.140.216: mx136z.chinaemail.cn and mxa136z.chinaemail.cn.

china-diamondtool.com - robtex.com