`2121cz.com`

DNSSEC	⚠️ Not signed
A	148.178.119.18^{🇺🇸 USZNI-AS-AP148.178.64.0/18}
NS	`ns1.julydns.com` ⭐ ⚠️ Not in parent delegation
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns1.judns.com` ⚠️ Not in zone NS records
		A	47.97.51.45^{🇨🇳 Alibaba-Cloud47.96.0.0/15 Aliyun Computing Co., LTD}
NS	`ns2.judns.com` ⚠️ Not in zone NS records
		A	162.159.27.251^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.julydns.com` ⚠️ Not in parent delegation
		A	162.159.48.223^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
SOA	`ns1.julydns.com`master@jmdns.com serial=1751618553

`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=1774449457

Subdomains

www.2121cz.com

Same first word

2121cz.com

Similar names

zc1122.com

1122zc.com

DNS History

7 records (5 active, 2 former)

○NSdns27.hichina.com2015-05-07 → 2017-12-20 · 5 obs

○ 2008-03-20 05:27:16
● 2015-05-07 11:55:00
● 2017-12-20 01:23:02
○ 2026-03-12 18:15:18
○ 2026-03-25 15:05:54

○NSdns28.hichina.com2015-05-07 → 2017-12-20 · 5 obs

○ 2008-03-20 05:27:16
● 2015-05-07 11:55:00
● 2017-12-20 01:23:02
○ 2026-03-12 18:15:18
○ 2026-03-25 15:05:54

●NSns1.judns.com2026-03-12 → 2026-03-25 · 3 obs

○ 2017-12-20 01:23:02
● 2026-03-12 18:15:18
● 2026-03-25 15:05:54

●NSns1.julydns.com2026-03-12 → 2026-03-25 · 3 obs

○ 2017-12-20 01:23:02
● 2026-03-12 18:15:18
● 2026-03-25 15:05:54

●NSns2.judns.com2026-03-12 → 2026-03-25 · 3 obs

○ 2017-12-20 01:23:02
● 2026-03-12 18:15:18
● 2026-03-25 15:05:54

●NSns2.julydns.com2026-03-12 → 2026-03-25 · 3 obs

○ 2017-12-20 01:23:02
● 2026-03-12 18:15:18
● 2026-03-25 15:05:54

●A148.178.119.182026-03-12 → 2026-03-25 · 2 obs

● 2026-03-12 18:15:18
● 2026-03-25 15:05:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, g.gtld-servers.net, j.gtld-servers.net, i.gtld-servers.net...	-
2121cz.com	ns1.judns.com, ns2.judns.com	2 records

✅ Authoritative Response

Server:162.159.27.251

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 2121cz.com (unsigned zone)

⏱️ Timing

Total: 3236ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`148.178.119.18`
NS	2	`ns1.julydns.com, ns2.julydns.com`
SOA	1	`ns1.julydns.com master.jmdns.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.judns.com, ns2.judns.com)

Analysis

Hierarchy

2121cz.com is the parent of www.2121cz.com.

IP Addresses

2121cz.com resolves to a single IP address: 148.178.119.18.

Other host names such as app.trust-inst.com, www.2121cz.com and hsslm.com share IP numbers with 2121cz.com.

Name Servers

2121cz.com is delegated to four name servers: ns1.judns.com, ns2.judns.com, ns1.julydns.com and ns2.julydns.com.

2121cz.com at least partially shares name servers with other domains, including dk21.cn, gzzhanjia.com, zhaojiemu.com, 1baidu.com and eadraw.com.