`17rtb.cn`

DNSSEC	⚠️ Not signed
A	172.80.108.201^{🇺🇸 ESITED-1172.80.0.0/17 ARIN direct allocation}
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=1774148090

`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=2034627771

Same first word

17rtb.cn

DNS History

4 records (3 active, 1 former)

●NSns1.nowcndns.com2026-02-17 → 2026-04-03 · 2 obs

● 2026-02-17 19:26:14
● 2026-04-03 05:31:48

●NSns2.nowcndns.com2026-02-17 → 2026-04-03 · 2 obs

● 2026-02-17 19:26:14
● 2026-04-03 05:31:48

○A104.201.36.1012026-02-17 → 2026-02-18 · 4 obs

● 2026-02-17 19:26:14
● 2026-02-18 02:30:10
○ 2026-04-03 05:31:46
○ 2026-04-03 05:31:48

●A172.80.108.2012026-04-03 → 2026-04-03 · 3 obs

○ 2026-02-18 02:30:10
● 2026-04-03 05:31:46
● 2026-04-03 05:31:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
17rtb.cn	ns1.nowcndns.com, ns2.nowcndns.com	-

✅ Authoritative Response

Server:1.193.216.204

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 17rtb.cn (unsigned zone)

⏱️ Timing

Total: 4564ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.80.108.201`
NS	2	`ns1.nowcndns.com, ns2.nowcndns.com`
SOA	1	`ns1.nowcndns.com admin.nowcndns.com`

Analysis

IP Addresses

17rtb.cn maps to IP address 172.80.108.201.

Name Servers

Two name servers ns1.nowcndns.com and ns2.nowcndns.com are delegated to 17rtb.cn.

17rtb.cn uses the same name server configuration as other domains, such as xlblog.com.cn, gdgy33.com.cn, boyw.com.cn, xzfire.cn and asiadat.cn.

Host names with three IP numbers:

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.

17rtb.cn - robtex.com

17rtb.cn

cn