`51bus.cn`

DNSSEC	⚠️ Not signed
A	47.117.164.40^{🇨🇳 Alibaba-Cloud47.117.128.0/17 Alibaba (US) Technology Co., Ltd.}
NS	`dns9.hichina.com` ⭐
		A	2408:4009:501::17^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 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,}
		A	139.224.142.122^{🇨🇳 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,}
NS	`dns10.hichina.com`
		A	2408:4009:501::18^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 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,}
		A	139.224.142.121^{🇨🇳 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,}
SOA	`dns9.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034712560

Same first word

51bus.cn

Similar names

51sub.net

DNS History

6 records (3 active, 3 former)

○NS(root)2015-06-21 → 2015-10-27 · 4 obs

● 2015-06-21 13:14:18
● 2015-10-27 18:06:52
○ 2016-01-17 14:13:06
○ 2026-04-26 01:12:52

●NSdns10.hichina.com2016-01-17 → 2026-04-26 · 3 obs

○ 2015-10-27 18:06:52
● 2016-01-17 14:13:06
● 2026-04-26 01:12:52

●NSdns9.hichina.com2016-01-17 → 2026-04-26 · 3 obs

○ 2015-10-27 18:06:52
● 2016-01-17 14:13:06
● 2026-04-26 01:12:52

○A118.178.122.1882016-11-29 → 2017-05-27 · 5 obs

○ 2016-04-14 17:29:20
● 2016-11-29 04:43:12
● 2017-05-27 10:17:16
○ 2026-04-14 21:32:00
○ 2026-04-26 01:12:52

○A119.10.7.822015-06-21 → 2016-04-14 · 4 obs

● 2015-06-21 13:14:18
● 2016-04-14 17:29:20
○ 2016-11-29 04:43:12
○ 2026-04-26 01:12:52

●A47.117.164.402026-04-14 → 2026-04-26 · 3 obs

○ 2017-05-27 10:17:16
● 2026-04-14 21:32:00
● 2026-04-26 01:12:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
51bus.cn	dns9.hichina.com, dns10.hichina.com	-

✅ Authoritative Response

Server:39.96.153.42

NS records: dns9.hichina.com, dns10.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51bus.cn (unsigned zone)

⏱️ Timing

Total: 3056ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.117.164.40`
NS	2	`dns9.hichina.com, dns10.hichina.com`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

51bus.cn points to a single IP: 47.117.164.40.

Other host names, for instance cutepart.com, 71hua.com, sgxxw.cn, hocv.cn and zhliver.com share IP numbers with 51bus.cn.

Name Servers

Two name servers dns10.hichina.com and dns9.hichina.com handle delegation for 51bus.cn.

51bus.cn uses the same name server setup as other domains, for example dynamicodex.net, xn--8ftu3t0qr2psh9h.net, itouchme.com, igpan.com and huian0769.com.

51bus.cn shares name servers with other domains at least partially, for instance omould.com, pmedu.com and tangboli.com.

Host names with nine IP numbers:

dns10.hichina.com points to: 2408:4009:501::18, 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.

dns9.hichina.com points to: 2408:4009:501::17, 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.

51bus.cn - robtex.com

51bus.cn

cn