`mdbook.cn`

DNSSEC	⚠️ Not signed
A	38.11.148.74^{🇺🇸 AS39847838.11.128.0/19 proxy registered}
NS	`ns1.nowcndns.com` ⭐
		A	1.193.216.204^{🇨🇳 CHINANET-Henan-Luoyang-IDC1.193.216.0/24 Chinatelecom HeNan Province Network}
			PTR	`ip-1-193-216-204.defastlink.net`
		A	218.98.111.129^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
			PTR	`ip-218-98-111-129.defastlink.net`
		A	218.98.111.138^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
			PTR	`ip-218-98-111-138.defastlink.net`
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)}
			PTR	`ip-183-253-57-202.defastlink.net`
		A	211.99.99.38^{🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object}
			PTR	`ip-211-99-99-38.defastlink.net`
SOA	`ns1.nowcndns.com`admin@nowcndns.com serial=1765270344

`cn`

	DNSSEC	⚠️ Not signed
	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=2034546407

📈 Tranco rank: #32,013

Same first word

mdbook.co.kr

mdbook.me

mdbook.com

mdbook.cn

Similar names

dmbook.jp

dombok.com

dmbook.pro

bookmd.com

dmbook.ru

dmbook.com

dmbook.co

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
mdbook.cn	ns1.nowcndns.com, ns2.nowcndns.com	-

✅ Authoritative Response

Server:218.98.111.138

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mdbook.cn (unsigned zone)

⏱️ Timing

Total: 1630ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`38.11.148.74`
NS	2	`ns1.nowcndns.com, ns2.nowcndns.com`
SOA	1	`ns1.nowcndns.com admin.nowcndns.com`

Analysis

IP Addresses

mdbook.cn resolves to one IP number: 38.11.148.74.

Other host names, for instance cmnu.cn, share IP numbers with mdbook.cn.

Name Servers

mdbook.cn is delegated to two name servers ns1.nowcndns.com and ns2.nowcndns.com.

mdbook.cn shares the same name server setup as other domains, for instance szcyxf.cn, fnxp.com.cn, zbwg.com.cn, daoduw.cn and bjxtj.cn.

Host names with three IPs:

ns1.nowcndns.com points to 1.193.216.204, 218.98.111.129 and 218.98.111.138.

ns2.nowcndns.com points to 61.158.128.11, 183.253.57.202 and 211.99.99.38.

mdbook.cn - robtex.com

mdbook.cn

cn