`51tbj.com`

DNSSEC	⚠️ Not signed
A	47.95.157.209^{🇨🇳 Alibaba-Cloud47.94.0.0/15 CT BeiJing IDC}
NS	`dns15.hichina.com` ⭐
		A	2408:4009:501::23^{🇨🇳 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	`dns16.hichina.com`
		A	2408:4009:501::24^{🇨🇳 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,}
MX	`mx1.qiye.aliyun.com` ⭐
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
MX	`mx2.qiye.aliyun.com`⁽¹⁰⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
MX	`mx3.qiye.aliyun.com`⁽¹⁵⁾
		A	47.246.136.231^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
			PTR	`cz-clare.com`
			PTR	`reachsmartdwell.com`
			PTR	`wevolt.tech`
		A	47.246.137.47^{🇺🇸 Alibaba-Cloud47.246.136.0/22 Alibaba CLoud}
TXT	`v=spf1 include:spf.qiye.aliyun.com -all`
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1774518757

Same first word

51tbj.cn

51tbj.com

Similar names

51jtb.cn

DNS History

7 records (6 active, 1 former)

●NSdns15.hichina.com2015-07-19 → 2026-03-26 · 2 obs

● 2015-07-19 23:07:32
● 2026-03-26 10:10:02

●NSdns16.hichina.com2015-07-19 → 2026-03-26 · 2 obs

● 2015-07-19 23:07:32
● 2026-03-26 10:10:02

●MXmx1.qiye.aliyun.com2026-03-19 → 2026-03-26 · 2 obs

● 2026-03-19 09:27:38
● 2026-03-26 10:10:02

●MXmx2.qiye.aliyun.com2026-03-19 → 2026-03-26 · 2 obs

● 2026-03-19 09:27:38
● 2026-03-26 10:10:02

●MXmx3.qiye.aliyun.com2026-03-19 → 2026-03-26 · 2 obs

● 2026-03-19 09:27:38
● 2026-03-26 10:10:02

○A121.42.110.502015-07-19 → 2020-04-01 · 4 obs

● 2015-07-19 23:07:32
● 2020-04-01 01:57:32
○ 2026-03-19 09:27:38
○ 2026-03-26 10:10:02

●A47.95.157.2092026-03-19 → 2026-03-26 · 3 obs

○ 2020-04-01 01:57:32
● 2026-03-19 09:27:38
● 2026-03-26 10:10:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, e.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net...	-
51tbj.com	dns15.hichina.com, dns16.hichina.com	18 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 51tbj.com (unsigned zone)

⏱️ Timing

Total: 579ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`47.95.157.209`
NS	2	`dns15.hichina.com, dns16.hichina.com`
MX	3	`mx1.qiye.aliyun.com (pri: 5), mx3.qiye.aliyun.com (pri: 15)...`
TXT	1	`v=spf1 include:spf.qiye.aliyun.com -all`
SOA	1	`dns15.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

51tbj.com maps to IP address 47.95.157.209.

Other host names, for example www.henanfanyi.com, zzaxsy.com and compolite.com share the same IP as 51tbj.com.

Name Servers

Two name servers dns15.hichina.com and dns16.hichina.com are delegated to 51tbj.com.

51tbj.com uses the same name server configuration as other domains, such as gaybasic.com, allzv.com, uooxin.com, safebank.com.cn and ronmasolar.com.

51tbj.com at least partially shares name servers with other domains such as 16hour.com, hc-cdn.cn, apiary.cn, wefashion.cn and tou100.com.

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

Two hosts with nine IPs each:

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.

Host 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

51tbj.com is handled by three mail servers: mx1.qiye.aliyun.com, mx2.qiye.aliyun.com and mx3.qiye.aliyun.com.

51tbj.com shares mail servers with other domains at least in part, for instance cntirevalves.com, cy-coo.com, iothn.cn, elueyes.com and ennotool.com.