51bb.com - dns.ninja

`51bb.com`

DNSSEC	⚠️ Not signed
NS	`ns1.alidns.com` ⭐
		A	2408:4009:501::1^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.45^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.55^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.205^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.215^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.45^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.55^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.115^{🇨🇳 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	139.224.142.125^{🇨🇳 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	`ns2.alidns.com`
		A	2408:4009:501::2^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.46^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.56^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.206^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.216^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.46^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.56^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.116^{🇨🇳 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	139.224.142.126^{🇨🇳 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	`ns1.alidns.com`hostmaster@hichina.com 2026-05-28 #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=1782639815

Subdomains

mail.51bb.com

Same first word

51bb.me

51bb.com

51bb.top

Similar names

bb51.com

bb15.at

1b5b.com

bb51.cc

1bb5.com

bb15.de

bb15.com

15bb.com

bb51.eu

15bb.net

DNS History

7 records (2 active, 5 former)

●NSns1.alidns.com2026-06-28 → 2026-06-28 · 2 obs

○ 2017-08-12 05:20:54
● 2026-06-28 09:52:14

○NSns13.xincache.com2015-06-13 → 2016-04-25 · 4 obs

● 2015-06-13 03:10:08
● 2016-04-25 01:08:00
○ 2016-12-06 02:38:32
○ 2026-06-28 09:52:14

○NSns14.xincache.com2015-06-13 → 2016-04-25 · 4 obs

● 2015-06-13 03:10:08
● 2016-04-25 01:08:00
○ 2016-12-06 02:38:32
○ 2026-06-28 09:52:14

○NSns19.xincache.com2016-12-06 → 2017-08-12 · 4 obs

○ 2016-04-25 01:08:00
● 2016-12-06 02:38:32
● 2017-08-12 05:20:54
○ 2026-06-28 09:52:14

●NSns2.alidns.com2026-06-28 → 2026-06-28 · 2 obs

○ 2017-08-12 05:20:54
● 2026-06-28 09:52:14

○NSns20.xincache.com2016-12-06 → 2017-08-12 · 4 obs

○ 2016-04-25 01:08:00
● 2016-12-06 02:38:32
● 2017-08-12 05:20:54
○ 2026-06-28 09:52:14

○MXmail.51bb.com2015-06-13 → 2017-08-12 · 3 obs

● 2015-06-13 03:10:08
● 2017-08-12 05:20:54
○ 2026-06-28 09:52:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net, c.gtld-servers.net...	-
51bb.com	ns1.alidns.com, ns2.alidns.com	18 records

✅ Authoritative Response

Server:120.76.107.45

NS records: ns1.alidns.com, ns2.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 587ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns2.alidns.com, ns1.alidns.com`
SOA	1	`ns1.alidns.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (ns1.alidns.com, ns1.alidns.com, ns1.alidns.com...)

Analysis

Hierarchy

51bb.com is the parent zone for mail.51bb.com.

Name Servers

Two name servers handle the delegation for 51bb.com: ns1.alidns.com and ns2.alidns.com.

The name server configuration of 51bb.com is shared with other domains, for instance gh.energy, foxue.cn, 112aa8f641015.beer and two others.

51bb.com partially shares its NS delegation with several other domains, including anibay.com, megagamelog.com, sgkkw.com and two others.

In DNS configurations, these name servers often share authority with ns7.alidns.com, ns8.alidns.com, dns25.hichina.com and 5 other name servers.

Hosts with 9 IP addresses each:

ns1.alidns.com resolves to 39.96.153.45, 39.96.153.55 and 47.118.199.205 among others, with 6 other IP addresses in total.

ns2.alidns.com resolves to 39.96.153.46, 39.96.153.56 and 47.118.199.206 among others, with 6 other IP addresses in total.