`51cto.net`

DNSSEC	⚠️ Not signed
A	203.107.45.167^{🇨🇳 Alibaba-Cloud203.107.45.0/24 Alibaba (US) Technology Co., Ltd.}
		PTR	`catl.com`
NS	`dns3.hichina.com` ⭐
		A	2408:4009:501::11^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.43^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.63^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.203^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.213^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.43^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.63^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.113^{🇨🇳 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,}
		A	139.224.142.123^{🇨🇳 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,}
NS	`dns4.hichina.com`
		A	2408:4009:501::12^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.44^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.54^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.204^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.214^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.44^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.54^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.114^{🇨🇳 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,}
		A	139.224.142.124^{🇨🇳 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,}
MX	`smtp.51cto.net` ⭐
TXT	`v=spf1 include:spf.51cto.net -all`
SOA	`dns3.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`net`

	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=1785033992

Same first word

51cto.net

51cto.co

51cto.com

51cto.eu

Similar names

51oct.com

otc15.com

cto51.ru

51otc.com

DNS History

8 records (4 active, 4 former)

●NSdns3.hichina.com2018-01-31 → 2026-07-26 · 3 obs

○ 2016-12-24 23:40:10
● 2018-01-31 19:42:26
● 2026-07-26 03:01:00

●NSdns4.hichina.com2018-01-31 → 2026-07-26 · 3 obs

○ 2016-12-24 23:40:10
● 2018-01-31 19:42:26
● 2026-07-26 03:01:00

○NSf1g1ns1.dnspod.net2016-12-24 → 2016-12-24 · 4 obs

○ 2016-04-19 15:28:04
● 2016-12-24 23:40:10
○ 2018-01-31 19:42:26
○ 2026-07-26 03:01:00

○NSf1g1ns2.dnspod.net2016-12-24 → 2016-12-24 · 4 obs

○ 2016-04-19 15:28:04
● 2016-12-24 23:40:10
○ 2018-01-31 19:42:26
○ 2026-07-26 03:01:00

○NSns.xinnet.cn2015-06-08 → 2016-04-19 · 4 obs

● 2015-06-08 19:01:42
● 2016-04-19 15:28:04
○ 2016-12-24 23:40:10
○ 2026-07-26 03:01:00

○NSns.xinnetdns.com2015-06-08 → 2016-04-19 · 4 obs

● 2015-06-08 19:01:42
● 2016-04-19 15:28:04
○ 2016-12-24 23:40:10
○ 2026-07-26 03:01:00

●MXsmtp.51cto.net2015-06-08 → 2026-07-26 · 2 obs

● 2015-06-08 19:01:42
● 2026-07-26 03:01:00

●A203.107.45.1672026-04-06 → 2026-07-26 · 2 obs

● 2026-04-06 17:49:18
● 2026-07-26 03:01:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	l.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net, e.gtld-servers.net...	-
51cto.net	dns3.hichina.com, dns4.hichina.com	-

✅ Authoritative Response

Server:47.118.199.203

NS records: dns3.hichina.com, dns4.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51cto.net (unsigned zone)

⏱️ Timing

Total: 1087ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.107.45.167`
NS	2	`dns3.hichina.com, dns4.hichina.com`
MX	1	`smtp.51cto.net (pri: 1)`
TXT	1	`v=spf1 include:spf.51cto.net -all`
SOA	1	`dns3.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

51cto.net has exactly one IP address — 203.107.45.167.

tybtdc.com, www.maydos.com.cn, voices100.com plus two other host names have IP numbers in common with 51cto.net.

Name Servers

Two name servers handle the delegation for 51cto.net: dns3.hichina.com and dns4.hichina.com.

The name server configuration of 51cto.net is shared with other domains, for instance v8bank.com, mimaark.cn, mita88.com and two others.

51cto.net shares at least some of its name servers with domains including yonshen.com, stf.com.cn and lingshanghui.com

These name servers are frequently paired with the name servers expirens3.hichina.com and expirens4.hichina.com.

Hosts with 9 IP addresses each:

dns3.hichina.com resolves to 39.96.153.43, 39.96.153.63 and 47.118.199.203 among others, with 6 other IP addresses in total.

dns4.hichina.com resolves to 39.96.153.44, 39.96.153.54 and 47.118.199.204 among others, with 6 other IP addresses in total.

Mail Servers

51cto.net uses one mail server — smtp.51cto.net.

51cto.net - robtex.com

51cto.net

net