`51yyjj.com`

	CNAME	`nsa845bcgb.a.yxydns.com`
	DNSSEC	⚠️ Not signed
	A	42.240.156.109^{🇨🇳 CHINANET-Guangdong-GuangZhou-IDC42.240.144.0/20 Guangzhou IDC of ChinaUnicom}

`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=1785145482

Same first word

51yyjj.com

DNS History

7 records (4 active, 3 former)

●NSdns10.hichina.com2016-12-15 → 2026-07-27 · 2 obs

● 2016-12-15 04:20:22
● 2026-07-27 09:48:28

●NSdns9.hichina.com2016-12-15 → 2026-07-27 · 2 obs

● 2016-12-15 04:20:22
● 2026-07-27 09:48:28

○MXmxbiz1.qq.com2017-09-01 → 2017-09-01 · 3 obs

● 2017-09-01 20:07:26
○ 2026-05-12 06:10:18
○ 2026-07-27 09:48:28

○MXmxbiz2.qq.com2017-09-01 → 2017-09-01 · 3 obs

● 2017-09-01 20:07:26
○ 2026-05-12 06:10:18
○ 2026-07-27 09:48:28

●MXmxn.mxhichina.com2026-05-12 → 2026-07-27 · 3 obs

○ 2017-09-01 20:07:26
● 2026-05-12 06:10:18
● 2026-07-27 09:48:28

○A119.10.105.722016-12-15 → 2017-09-01 · 4 obs

● 2016-12-15 04:20:22
● 2017-09-01 20:07:26
○ 2026-05-12 06:10:18
○ 2026-07-27 09:48:28

●CNAMEnsa845bcgb.a.yxydns.com2026-05-12 → 2026-07-27 · 2 obs

● 2026-05-12 06:10:18
● 2026-07-27 09:48:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
51yyjj.com	dns9.hichina.com, dns10.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.41

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 525ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns9.hichina.com, dns10.hichina.com`
MX	1	`mxn.mxhichina.com (pri: 10)`
TXT	2	`2018042703281618a3ge2xr89u3ib0iqvwf5w3e9, /.well-known/pki-validation/fileauth.txt`
CNAME	1	`nsa845bcgb.a.yxydns.com`
SOA	1	`dns9.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns9.hichina.com, dns9.hichina.com, dns9.hichina.com...)

Analysis

IP Addresses

51yyjj.com resolves to just one IP address, 42.240.156.109.

There are other host names — nsa845bcgb.a.yxydns.com among them — that share IP numbers with 51yyjj.com.

51yyjj.com - robtex.com

51yyjj.com

com