51cool.com - robtex.com

51cool.com

DNSSEC⚠️ Not signed
NSns17.xincache.com ⭐
A2402:4e00:1470:2::e🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40
A2402:4e00:1730::e🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40
A1.12.0.4🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM
A36.155.149.180🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)
A112.80.181.45🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A117.89.178.173🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC
A125.94.59.210🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network
A129.211.176.209🇨🇳 TENCENT-NET-AP129.211.176.0/20
NSns18.xincache.com
A2402:4e00:111:fff::c🇨🇳 TENCENT-NET-AP2402:4e00::/35
A1.12.0.1🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM
A36.155.149.176🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)
A112.80.181.111🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network
A117.89.178.184🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC
A129.211.176.239🇨🇳 TENCENT-NET-AP129.211.176.0/20
A163.177.5.23🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24
MXmx.ym.163.com ⭐
A111.124.200.35🇨🇳 CHINANET-Guizhou-Guian-IDC111.124.192.0/19
TXTv=spf1 include:spf.163.com ~all
SOAns17.xincache.comenterprise1dnsadmin@dnspod.com serial=1576631645

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1778659001

Same first word

51cool.com

Similar names

15cool.com

DNS History

14 records (3 active, 11 former)

200920112013201520172019202120232025NSns17.xincache.comns18.xincache.comfreedns1.registrar-servers.comfreedns2.registrar-servers.comfreedns3.registrar-servers.comfreedns4.registrar-servers.comfreedns5.registrar-servers.comns.xinnet.cnns.xinnetdns.comMXmx.ym.163.commail.51cool.commx.mail.ym.163.comA58.215.64.13058.215.76.161
○NSfreedns1.registrar-servers.com2015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
○NSfreedns2.registrar-servers.com2015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
○NSfreedns3.registrar-servers.com2015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
○NSfreedns4.registrar-servers.com2015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
○NSfreedns5.registrar-servers.com2015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
○NSns.xinnet.cn2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 03:59:00
○ 2015-06-09 14:21:52
○ 2026-05-13 08:14:36
○NSns.xinnetdns.com2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 03:59:00
○ 2015-06-09 14:21:52
○ 2026-05-13 08:14:36
●NSns17.xincache.com2017-03-31 → 2026-05-13 · 3 obs
○ 2016-04-08 16:05:28
● 2017-03-31 08:50:40
● 2026-05-13 08:14:36
●NSns18.xincache.com2017-03-31 → 2026-05-13 · 3 obs
○ 2016-04-08 16:05:28
● 2017-03-31 08:50:40
● 2026-05-13 08:14:36
○MXmail.51cool.com2008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 03:59:00
○ 2015-06-09 14:21:52
○ 2026-05-13 08:14:36
○MXmx.mail.ym.163.com2015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
●MXmx.ym.163.com2017-03-31 → 2026-05-13 · 3 obs
○ 2016-04-08 16:05:28
● 2017-03-31 08:50:40
● 2026-05-13 08:14:36
○A58.215.64.1302015-06-09 → 2016-04-08 · 5 obs
○ 2008-03-20 03:59:00
● 2015-06-09 14:21:52
● 2016-04-08 16:05:28
○ 2017-03-31 08:50:40
○ 2026-05-13 08:14:36
○A58.215.76.1612008-03-20 → 2008-03-20 · 3 obs
● 2008-03-20 03:59:00
○ 2015-06-09 14:21:52
○ 2026-05-13 08:14:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net...-
51cool.comns17.xincache.com, ns18.xincache.com12 records

✅ Authoritative Response

Server:1.12.0.1

NS records: ns17.xincache.com, ns18.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 111ms | Queries: -

📄 Records

TypeCountSample Data
NS2ns17.xincache.com, ns18.xincache.com
MX1mx.ym.163.com (pri: 10)
TXT1v=spf1 include:spf.163.com ~all
SOA1ns17.xincache.com enterprise1dnsadmin.dn

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns17.xincache.com, ns17.xincache.com, ns17.xincache.com...)

Analysis

Name Servers

51cool.com is delegated to two name servers: ns17.xincache.com and ns18.xincache.com.

51cool.com shares the same name server setup as other domains, for example weilibg.com, tongcheng.net.cn, wxstdz.com, weilanliuxue.com and ane-cn.com.

51cool.com at least partially shares name servers with other domains, for instance jyhaiyan.com, cdsk.org.cn, yxabs.com, wxxhsgs.com and cfls.cn.

These name servers are commonly used with ns11.xincache.com, ns12.xincache.com, ns13.xincache.com and ns14.xincache.com.

Host names with eight IP numbers: ns17.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 IP numbers: ns18.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.

Mail Servers

51cool.com is handled by a single mail server, mx.ym.163.com.

51cool.com shares the same mail server setup as other domains, for instance lonelystar.org, singerto.cn, newwave.net.cn, xt-yifeng.com and xuantaikeji.com.

51cool.com shares mail servers with other domains at least partially, including cfuas.com, kmww.com, szbf.co, trackphonetools.com and welleke.com.

Host name mx.ym.163.com points to IP address 111.124.200.35.