51zcf.com - robtex.com

51zcf.com

DNSSEC⚠️ Not signed
A142.111.223.165🇺🇸 CloudWebManage142.111.223.0/24 autogen
NSdns15.hichina.com ⭐
A2408:4009:501::23🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.42🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A39.96.153.52🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A47.118.199.202🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A47.118.199.212🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A120.76.107.42🇨🇳 Alibaba-Cloud120.76.0.0/17
A120.76.107.52🇨🇳 Alibaba-Cloud120.76.0.0/17
A139.224.142.112🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
A139.224.142.122🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
NSdns16.hichina.com
A2408:4009:501::24🇨🇳 Alibaba-Cloud2408:4009:501::/48
A39.96.153.41🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A39.96.153.51🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC
A47.118.199.201🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A47.118.199.211🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.
A120.76.107.41🇨🇳 Alibaba-Cloud120.76.0.0/17
A120.76.107.51🇨🇳 Alibaba-Cloud120.76.0.0/17
A139.224.142.111🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
PTRip-139-224-142-111.defastlink.net
A139.224.142.121🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,
MXmailstore1.secureserver.net(999)
A216.69.141.78🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp01-v02.prod.phx3.secureserver.net
A216.69.141.114🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp03-v02.prod.phx3.secureserver.net
A216.69.141.162🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp02-v02.prod.phx3.secureserver.net
MXsmtp.secureserver.net(999)
A216.69.141.71🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp01-v01.prod.phx3.secureserver.net
A216.69.141.84🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp02-v01.prod.phx3.secureserver.net
A216.69.141.113🇺🇸 AS398101216.69.140.0/22
PTRosplibsmtp03-v01.prod.phx3.secureserver.net
SOAdns15.hichina.comhostmaster@hichina.com 2026-01-09 #13

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=1774423912

Same first word

51zcf.com

Similar names

51zfc.com

DNS History

16 records (5 active, 11 former)

20162017201820192020202120222023202420252026NSdns15.hichina.comdns16.hichina.comfreedns1.registrar-servers.comfreedns2.registrar-servers.comfreedns3.registrar-servers.comfreedns4.registrar-servers.comfreedns5.registrar-servers.comns3.dnsdun.netns43.domaincontrol.comns44.domaincontrol.comns6.dnsdun.comMXmailstore1.secureserver.netsmtp.secureserver.netA142.111.223.165104.202.29.23923.106.184.17
●NSdns15.hichina.com2026-02-16 → 2026-03-25 · 3 obs
○ 2017-06-12 12:32:10
● 2026-02-16 10:36:46
● 2026-03-25 07:57:10
●NSdns16.hichina.com2026-02-16 → 2026-03-25 · 3 obs
○ 2017-06-12 12:32:10
● 2026-02-16 10:36:46
● 2026-03-25 07:57:10
○NSfreedns1.registrar-servers.com2015-05-28 → 2016-04-14 · 4 obs
● 2015-05-28 11:49:14
● 2016-04-14 05:49:54
○ 2016-09-27 04:39:00
○ 2026-03-25 07:57:10
○NSfreedns2.registrar-servers.com2015-05-28 → 2016-04-14 · 4 obs
● 2015-05-28 11:49:14
● 2016-04-14 05:49:54
○ 2016-09-27 04:39:00
○ 2026-03-25 07:57:10
○NSfreedns3.registrar-servers.com2015-05-28 → 2016-04-14 · 4 obs
● 2015-05-28 11:49:14
● 2016-04-14 05:49:54
○ 2016-09-27 04:39:00
○ 2026-03-25 07:57:10
○NSfreedns4.registrar-servers.com2015-05-28 → 2016-04-14 · 4 obs
● 2015-05-28 11:49:14
● 2016-04-14 05:49:54
○ 2016-09-27 04:39:00
○ 2026-03-25 07:57:10
○NSfreedns5.registrar-servers.com2015-05-28 → 2016-04-14 · 4 obs
● 2015-05-28 11:49:14
● 2016-04-14 05:49:54
○ 2016-09-27 04:39:00
○ 2026-03-25 07:57:10
○NSns3.dnsdun.net2016-09-27 → 2016-09-27 · 4 obs
○ 2016-04-14 05:49:54
● 2016-09-27 04:39:00
○ 2017-06-12 12:32:10
○ 2026-03-25 07:57:10
○NSns43.domaincontrol.com2017-06-12 → 2017-06-12 · 4 obs
○ 2016-09-27 04:39:00
● 2017-06-12 12:32:10
○ 2026-02-16 10:36:46
○ 2026-03-25 07:57:10
○NSns44.domaincontrol.com2017-06-12 → 2017-06-12 · 4 obs
○ 2016-09-27 04:39:00
● 2017-06-12 12:32:10
○ 2026-02-16 10:36:46
○ 2026-03-25 07:57:10
○NSns6.dnsdun.com2016-09-27 → 2016-09-27 · 4 obs
○ 2016-04-14 05:49:54
● 2016-09-27 04:39:00
○ 2017-06-12 12:32:10
○ 2026-03-25 07:57:10
●MXmailstore1.secureserver.net2017-06-12 → 2026-03-25 · 2 obs
● 2017-06-12 12:32:10
● 2026-03-25 07:57:10
●MXsmtp.secureserver.net2017-06-12 → 2026-03-25 · 2 obs
● 2017-06-12 12:32:10
● 2026-03-25 07:57:10
○A104.202.29.2392016-09-27 → 2016-09-27 · 4 obs
○ 2016-04-14 05:49:54
● 2016-09-27 04:39:00
○ 2017-06-12 12:32:10
○ 2026-03-25 07:57:10
●A142.111.223.1652017-06-12 → 2026-03-25 · 3 obs
○ 2016-09-27 04:39:00
● 2017-06-12 12:32:10
● 2026-03-25 07:57:10
○A23.106.184.172015-05-28 → 2016-04-14 · 4 obs
● 2015-05-28 11:49:14
● 2016-04-14 05:49:54
○ 2016-09-27 04:39:00
○ 2026-03-25 07:57:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, i.gtld-servers.net, c.gtld-servers.net, k.gtld-servers.net...-
51zcf.comdns15.hichina.com, dns16.hichina.com18 records

✅ Authoritative Response

Server:120.76.107.41

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 3615ms | Queries: -

📄 Records

TypeCountSample Data
NS2dns15.hichina.com, dns16.hichina.com
SOA1dns15.hichina.com hostmaster.hichina.com

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)

Analysis

IP Addresses

51zcf.com points to IP number: 142.111.223.165.

Name Servers

51zcf.com is delegated to two name servers: dns15.hichina.com and dns16.hichina.com.

51zcf.com shares the same name server setup as oeway.com, belino.com.cn, vsxq.cn, aiyoogame.com and zenindices.cn.

51zcf.com at least partially shares name servers with other domains, for instance isrd.org, cdhc.cn, xianjuwang.cn, donghaohg.com and suzhoushancheng.com.

These name servers are commonly used with expirens3.hichina.com, expirens4.hichina.com, ns1.alidns.com, ns2.alidns.com, ns7.alidns.com and ns8.alidns.com.

Nine IP numbers per host:

dns15.hichina.com points to: 2408:4009:501::23, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

dns16.hichina.com points to: 2408:4009:501::24, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

Mail Servers

51zcf.com is handled by two mail servers: mailstore1.secureserver.net and smtp.secureserver.net.

The mail server setup for 51zcf.com matches that of other domains, for instance tibetandesine.com, kcca.us, felo-de-se.com, sierrateldirectory.com and collegebounddrivewaysealing.com.

Host names with three IP numbers: mailstore1.secureserver.net points to 216.69.141.78, 216.69.141.114 and 216.69.141.162; smtp.secureserver.net points to 216.69.141.71, 216.69.141.84 and 216.69.141.113.