`downsc.cn`

DNSSEC	⚠️ Not signed
A	45.203.73.235^{🇭🇰 HDHK45.203.72.0/21 Proxy-registered route object}
NS	`dm1.longmingdns.com` ⭐
		A	218.98.111.163^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`dm2.longmingdns.com`
		A	183.253.57.197^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.56^{🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object}
SOA	`dm1.longmingdns.com`dnsadmin@longmingdns.com serial=1773245835

`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=2034582967

Subdomains

www.downsc.cn

Same first word

downsc.cn

downsc.com

Similar names

sdwcon.com

cdsnow.com

cowdns.com

dcsnow.com

ocwdns.de

sdconw.com

owncds.com

wcdons.com

cdowns.com

scdown.net

cdsnow.cn

scdown.com

DNS History

11 records (3 active, 8 former)

●NSdm1.longmingdns.com2026-03-12 → 2026-03-24 · 3 obs

○ 2018-12-02 06:44:46
● 2026-03-12 15:34:32
● 2026-03-24 20:37:14

●NSdm2.longmingdns.com2026-03-12 → 2026-03-24 · 3 obs

○ 2018-12-02 06:44:46
● 2026-03-12 15:34:32
● 2026-03-24 20:37:14

○NSjuming.dnsdun.com2018-12-02 → 2018-12-02 · 4 obs

○ 2017-03-11 20:42:44
● 2018-12-02 06:44:46
○ 2026-03-12 15:34:32
○ 2026-03-24 20:37:14

○NSjuming.dnsdun.net2018-12-02 → 2018-12-02 · 4 obs

○ 2017-03-11 20:42:44
● 2018-12-02 06:44:46
○ 2026-03-12 15:34:32
○ 2026-03-24 20:37:14

○NSns1.dnsdun.com2015-10-25 → 2016-05-07 · 4 obs

● 2015-10-25 00:36:54
● 2016-05-07 02:46:28
○ 2017-03-11 20:42:44
○ 2026-03-24 20:37:14

○NSns4.dnsdun.net2015-10-25 → 2016-05-07 · 4 obs

● 2015-10-25 00:36:54
● 2016-05-07 02:46:28
○ 2017-03-11 20:42:44
○ 2026-03-24 20:37:14

○A38.238.118.1082026-03-12 → 2026-03-24 · 2 obs

○ 2026-03-12 15:34:32
○ 2026-03-24 20:37:14

●A45.203.73.2352026-03-12 → 2026-03-24 · 3 obs

○ 2017-03-11 20:42:44
● 2026-03-12 15:34:32
● 2026-03-24 20:37:14

○A63.141.225.1862016-05-07 → 2016-05-07 · 4 obs

○ 2016-01-04 22:33:08
● 2016-05-07 02:46:28
○ 2017-03-11 20:42:44
○ 2026-03-24 20:37:14

○A74.91.29.982015-10-25 → 2016-01-04 · 4 obs

● 2015-10-25 00:36:54
● 2016-01-04 22:33:08
○ 2016-05-07 02:46:28
○ 2026-03-24 20:37:14

○CNAMEwww.downsc.cn2018-12-02 → 2018-12-02 · 3 obs

● 2018-12-02 06:44:46
○ 2026-03-12 15:34:32
○ 2026-03-24 20:37:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
downsc.cn	dm1.longmingdns.com, dm2.longmingdns.com	-

✅ Authoritative Response

Server:218.98.111.163

NS records: dm1.longmingdns.com, dm2.longmingdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for downsc.cn (unsigned zone)

⏱️ Timing

Total: 1961ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.203.73.235`
NS	2	`dm1.longmingdns.com, dm2.longmingdns.com`
SOA	1	`dm1.longmingdns.com dnsadmin.longmingdns`

Analysis

Hierarchy

The parent of www.downsc.cn is downsc.cn.

IP Addresses

downsc.cn points to IP number: 45.203.73.235.

Other host names such as sdhu.com.cn, www.downsc.cn and www.sdhu.com.cn share IP numbers with downsc.cn.

Name Servers

downsc.cn is delegated to two name servers: dm1.longmingdns.com and dm2.longmingdns.com.

downsc.cn shares the same name server setup as zdxn.com.cn, kanxuexiao.cn, qng6rf.cn, yanxingw.cn and czart.cn.

Host names with two IP numbers:

dm2.longmingdns.com points to 183.253.57.197 and 211.99.99.56.

Host names with one IP number:

dm1.longmingdns.com points to 218.98.111.163.

downsc.cn - robtex.com

downsc.cn

cn