`51dll.com`

DNSSEC	⚠️ Not signed
NS	`dns7.hichina.com` ⭐
		A	2408:4009:501::15^{🇨🇳 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	`dns8.hichina.com`
		A	2408:4009:501::16^{🇨🇳 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,}
SOA	`dns7.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=1785109082

Same first word

51dll.com

DNS History

7 records (2 active, 5 former)

●NSdns7.hichina.com2015-06-19 → 2026-07-26 · 2 obs

● 2015-06-19 10:51:54
● 2026-07-26 23:52:36

●NSdns8.hichina.com2015-06-19 → 2026-07-26 · 2 obs

● 2015-06-19 10:51:54
● 2026-07-26 23:52:36

○MXmxdomain.qq.com2015-06-19 → 2016-01-22 · 4 obs

● 2015-06-19 10:51:54
● 2016-01-22 10:10:00
○ 2016-07-10 19:50:46
○ 2026-07-26 23:52:36

○A121.199.14.1092015-06-19 → 2016-01-22 · 4 obs

● 2015-06-19 10:51:54
● 2016-01-22 10:10:00
○ 2016-07-10 19:50:46
○ 2026-07-26 23:52:36

○A121.199.250.2292017-01-22 → 2017-01-22 · 4 obs

○ 2016-07-10 19:50:46
● 2017-01-22 11:56:12
○ 2026-04-06 05:48:08
○ 2026-07-26 23:52:36

○A42.120.217.432016-07-10 → 2016-07-10 · 4 obs

○ 2016-01-22 10:10:00
● 2016-07-10 19:50:46
○ 2017-01-22 11:56:12
○ 2026-07-26 23:52:36

○CNAMEew-8sg30vaj.aliapp.com2016-07-10 → 2017-01-22 · 4 obs

● 2016-07-10 19:50:46
● 2017-01-22 11:56:12
○ 2026-04-06 05:48:08
○ 2026-07-26 23:52:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	j.gtld-servers.net, i.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net...	-
51dll.com	dns7.hichina.com, dns8.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.43

NS records: dns7.hichina.com, dns8.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 503ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns7.hichina.com, dns8.hichina.com`
SOA	1	`dns7.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns7.hichina.com, dns7.hichina.com, dns7.hichina.com...)

Analysis

Name Servers

51dll.com has two authoritative name servers — dns7.hichina.com and dns8.hichina.com.

51dll.com shares its name server setup with other domains, including fimex.com.cn, huiercai.cn, adzorise.com and two others.

51dll.com has some name servers in common with other domains such as yeshm.com, dishao.com and gdzuian.com

These name servers tend to appear in combination with the name servers expirens3.hichina.com, expirens4.hichina.com, f1g1ns1.dnspod.net and f1g1ns2.dnspod.net.

Host names with 9 IP numbers:

dns7.hichina.com points to 39.96.153.43, 39.96.153.63, 47.118.199.203 and 6 other IP addresses.

dns8.hichina.com points to 39.96.153.44, 39.96.153.54, 47.118.199.204 and 6 other IP addresses.

51dll.com - robtex.com

51dll.com

com