`51is.com`

DNSSEC	⚠️ Not signed
A	101.89.76.178^{🇨🇳 SHANGHAITELECOM101.89.76.0/24 SHIDC}
NS	`ns13.xincache.com` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns14.xincache.com`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
			PTR	`ip-36-155-149-176.defastlink.net`
		A	112.80.181.111^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.184^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
		A	163.177.5.23^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
SOA	`ns13.xincache.com`enterprise1dnsadmin@dnspod.com serial=1577162634

`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=1774422097

Same first word

51is.cn

51is.com

Similar names

is15.com

1s5i.com

si15.cn

i15s.io

si51.com

si15.com

15is.com

s15i.hatenablog.com

s15i.org

is15.ru

i15s.com

DNS History

5 records (3 active, 2 former)

●NSns13.xincache.com2015-07-03 → 2026-03-25 · 3 obs

○ 2008-03-17 07:20:22
● 2015-07-03 09:21:04
● 2026-03-25 07:28:12

●NSns14.xincache.com2015-07-03 → 2026-03-25 · 3 obs

○ 2008-03-17 07:20:22
● 2015-07-03 09:21:04
● 2026-03-25 07:28:12

○MXmail.51is.com2015-07-03 → 2017-04-19 · 5 obs

○ 2008-03-17 07:20:22
● 2015-07-03 09:21:04
● 2017-04-19 16:59:58
○ 2026-02-24 01:32:16
○ 2026-03-25 07:28:12

●A101.89.76.1782026-02-24 → 2026-03-25 · 3 obs

○ 2017-04-19 16:59:58
● 2026-02-24 01:32:16
● 2026-03-25 07:28:12

○A114.80.114.1232015-07-03 → 2017-04-19 · 5 obs

○ 2008-03-17 07:20:22
● 2015-07-03 09:21:04
● 2017-04-19 16:59:58
○ 2026-02-24 01:32:16
○ 2026-03-25 07:28:12

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
51is.com	ns13.xincache.com, ns14.xincache.com	12 records

✅ Authoritative Response

Server:1.12.0.4

NS records: ns13.xincache.com, ns14.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 238ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`101.89.76.178`
NS	2	`ns13.xincache.com, ns14.xincache.com`
SOA	1	`ns13.xincache.com enterprise1dnsadmin.dn`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns13.xincache.com, ns13.xincache.com, ns13.xincache.com...)

Analysis

IP Addresses

51is.com resolves to a single IP: 101.89.76.178.

Other host names, for instance webxun.com, okn.cn, genesischemical.com.cn, webws.com and shdiannao.com share IP numbers with 51is.com.

Name Servers

51is.com has two name servers: ns13.xincache.com and ns14.xincache.com.

51is.com shares the same name server setup as other domains, for example xhjy.net, mevol.net, vcpark.cn, mentholatumclub.com and zhenbao.net.

51is.com shares some name servers with other domains, for example sxwd.com.cn, nf-ref.cn, zzkjdl.com, jsxishan.gov.cn and zgpingyuan.gov.cn.

These name servers are commonly used alongside ns11.xincache.com, ns12.xincache.com, ns17.xincache.com and ns18.xincache.com.

Host names with eight IPs:

ns13.xincache.com points to: 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.

Host names with seven IPs:

ns14.xincache.com points to: 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.

51is.com - robtex.com

51is.com

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