`defenddoor.cn`

DNSSEC	⚠️ Not signed
A	38.173.14.211^{🇺🇸 AS39847838.173.0.0/18 PEG TECH INC}
NS	`ns1.nowcndns.com` ⭐
		A	1.193.216.204^{🇨🇳 CHINANET-Henan-Luoyang-IDC1.193.216.0/24 Chinatelecom HeNan Province Network}
		A	218.98.111.129^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
		A	218.98.111.138^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`ns2.nowcndns.com`
		A	61.158.128.11^{🇨🇳 CHINA169-Backbone61.158.128.0/17 CNC Group CHINA169 Henan Province Network}
			PTR	`11.128.158.61.ha.cnc`
		A	183.253.57.202^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.38^{🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object}
SOA	`ns1.nowcndns.com`admin@nowcndns.com serial=1772938827

`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=2034707504

defenddoor.cn

doordefend.com

4 records (3 active, 1 former)

●NSns1.nowcndns.com2026-02-26 → 2026-04-24 · 2 obs

● 2026-02-26 17:04:12
● 2026-04-24 15:05:20

●NSns2.nowcndns.com2026-02-26 → 2026-04-24 · 2 obs

● 2026-02-26 17:04:12
● 2026-04-24 15:05:20

●A38.173.14.2112026-03-23 → 2026-04-24 · 3 obs

○ 2026-02-26 17:04:12
● 2026-03-23 11:26:58
● 2026-04-24 15:05:20

○A38.173.36.2512026-02-26 → 2026-02-26 · 3 obs

● 2026-02-26 17:04:12
○ 2026-03-23 11:26:58
○ 2026-04-24 15:05:20

defenddoor.cn points to a single IP: 38.173.14.211.

Other host names such as 356o.cn and mz999.cn share IP numbers with defenddoor.cn.

Two name servers ns1.nowcndns.com and ns2.nowcndns.com handle delegation for defenddoor.cn.

defenddoor.cn uses the same name server setup as other domains, for example xx315.cn, 863water.com.cn, mengku.yn.cn, ebqn.cn and deicy.cn.

Host names with three IP numbers: