`51citie.com`

DNSSEC	⚠️ Not signed
NS	`n1.xundns.com` ⭐
		A	2409:8c44:1b00:601:1:1110:609:6027^{🇨🇳 CHINAMOBILE-CN2409:8c44:1b00::/48 CMI (Customer Route)}
		A	2604:86c0:5001:11::2659:466b^{🇺🇸 AS630232604:86c0:5000::/36 GTHOST-SEA}
		A	38.89.70.107^{🇺🇸 AS6302338.89.70.0/24 Route Registered for Cogent Communications Customer - GlobalTelehost Corp}
			PTR	`107-70-89-38.clients.gthost.com`
		A	111.6.96.27^{🇨🇳 CHINAMOBILE-CN111.6.96.0/21 CMI (Customer Route)}
NS	`n2.xundns.com`
		A	2408:8621:0:42:e401:402:0:a^{🇨🇳 CHINA169-Backbone2408:8621::/32 China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street}
		A	2408:8722:1801:10:4:611:6303:181^{🇨🇳 CHINA169-Backbone2408:8722::/32 China Unicom B811&A1218, China Unicom No.21, Jin-Rong Street}
		A	2604:86c0:6001:8::a9c5:8e51^{🇺🇸 AS630232604:86c0:6000::/36 GTHOST-SCL}
		A	61.163.30.181^{🇨🇳 CHINA169-Backbone61.163.0.0/16 CNC Group CHINA169 Henan Province Network}
			PTR	`hn.ly.kd.adsl`
		A	122.114.37.19^{🇨🇳 CHINA169-Backbone122.114.0.0/16 route of Chinaunicomroute of Chinaunicom}
		A	169.197.142.81^{🇺🇸 AS63023169.197.142.0/24 GlobalTeleHost}
			PTR	`81-142-197-169.clients.gthost.com`
SOA	`n1.xundns.com`nsadmin@xundns.com serial=437896

`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=1774807047

rank #573390 globally
rank #258904 in the tld

Same first word

51citie.com

DNS History

8 records (2 active, 6 former)

●NSn1.xundns.com2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-25 12:08:56
● 2026-02-17 21:07:20
● 2026-03-29 18:05:28

●NSn2.xundns.com2026-02-17 → 2026-03-29 · 3 obs

○ 2017-05-25 12:08:56
● 2026-02-17 21:07:20
● 2026-03-29 18:05:28

○NSns11.bigwww.com2015-10-22 → 2017-05-25 · 4 obs

● 2015-10-22 00:54:20
● 2017-05-25 12:08:56
○ 2026-02-17 21:07:20
○ 2026-03-29 18:05:28

○A104.31.202.732016-09-23 → 2016-09-23 · 4 obs

○ 2016-04-10 19:15:18
● 2016-09-23 14:55:08
○ 2017-05-25 12:08:56
○ 2026-03-29 18:05:28

○A104.31.203.732016-09-23 → 2016-09-23 · 4 obs

○ 2016-04-10 19:15:18
● 2016-09-23 14:55:08
○ 2017-05-25 12:08:56
○ 2026-03-29 18:05:28

○A116.255.233.2102017-05-25 → 2017-05-25 · 4 obs

○ 2016-09-23 14:55:08
● 2017-05-25 12:08:56
○ 2026-02-17 21:07:20
○ 2026-03-29 18:05:28

○A125.88.181.162015-10-22 → 2016-04-10 · 4 obs

● 2015-10-22 00:54:20
● 2016-04-10 19:15:18
○ 2016-09-23 14:55:08
○ 2026-03-29 18:05:28

○CNAME51citie.com.cname.yunjiasu-cdn.net2016-09-23 → 2016-09-23 · 3 obs

● 2016-09-23 14:55:08
○ 2017-05-25 12:08:56
○ 2026-03-29 18:05:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, a.gtld-servers.net, h.gtld-servers.net...	-
51citie.com	n1.xundns.com, n2.xundns.com	11 records

✅ Authoritative Response

Server:122.114.37.19

NS records: n1.xundns.com, n2.xundns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51citie.com (unsigned zone)

⏱️ Timing

Total: 3591ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`n1.xundns.com, n2.xundns.com`
SOA	1	`n1.xundns.com nsadmin.xundns.com`

📌 Glue Records Collected

Total: 11

Out-of-bailiwick: 11 (n1.xundns.com, n1.xundns.com, n1.xundns.com...)

Analysis

Name Servers

51citie.com's delegation uses two name servers: n1.xundns.com and n2.xundns.com.

51citie.com uses the same name server setup as other domains, such as yinbagua.com, hhqoks221.vip, 881279.com, bugoffice.com and a341yjj.top.

51citie.com at least partially shares name servers with other domains, including dadcents.org, hd8159.cc, wikizine.org, ussdelbertdblack.org and sampakundu.com.

These name servers are often used with v1s1.xundns.com and v1s2.xundns.com.

Host names with six IP numbers:

n2.xundns.com points to: 2408:8621:0:42:e401:402:0:a, 2408:8722:1801:10:4:611:6303:181, 2604:86c0:6001:8::a9c5:8e51, 61.163.30.181, 122.114.37.19 and 169.197.142.81.

Host names with four IP numbers:

n1.xundns.com points to: 2409:8c44:1b00:601:1:1110:609:6027, 2604:86c0:5001:11::2659:466b, 38.89.70.107 and 111.6.96.27.

51citie.com - robtex.com

51citie.com

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