`21js.cn`

DNSSEC	⚠️ Not signed
A	106.14.145.139^{🇨🇳 Alibaba-Cloud106.14.0.0/16 Alibaba (US) Technology Co., Ltd.}
NS	`a.ezdnscenter.com` ⭐
		A	218.98.111.140^{🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED}
NS	`b.ezdnscenter.com`
		A	183.253.57.210^{🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)}
		A	211.99.99.58^{🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object}
SOA	`a.ezdnscenter.com`dnsadmin@ezdnscenter.com serial=1751342704

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2035066578

Same first word

21js.com

21js.cn

21js.org

Similar names

sj12.net

21sj.info

j12s.com

2j1s.com

12js.com

js12.com

12sj.cn

sj12.info

js21.nl

sj12.com

21sj.net

js12.cc

12js.org

DNS History

3 records (3 active, 0 former)

●NSa.ezdnscenter.com2026-02-14 → 2026-07-20 · 2 obs

● 2026-02-14 20:22:14
● 2026-07-20 18:41:24

●NSb.ezdnscenter.com2026-02-14 → 2026-07-20 · 2 obs

● 2026-02-14 20:22:14
● 2026-07-20 18:41:24

●A106.14.145.1392026-02-14 → 2026-07-20 · 4 obs

● 2026-02-14 20:22:14
○ 2026-06-26 12:18:16
● 2026-07-04 20:18:32
● 2026-07-20 18:41:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	d.dns.cn, b.dns.cn, a.dns.cn, c.dns.cn...	-
21js.cn	a.ezdnscenter.com, b.ezdnscenter.com	-

✅ Authoritative Response

Server:183.253.57.210

NS records: a.ezdnscenter.com, b.ezdnscenter.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21js.cn (unsigned zone)

⏱️ Timing

Total: 1797ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`106.14.145.139`
NS	2	`a.ezdnscenter.com, b.ezdnscenter.com`
SOA	1	`a.ezdnscenter.com dnsadmin.ezdnscenter.c`

Analysis

IP Addresses

21js.cn resolves to just one IP address, 106.14.145.139.

Name Servers

21js.cn has two authoritative name servers — a.ezdnscenter.com and b.ezdnscenter.com.

21js.cn shares its NS records with other domains, for example ddyd365.com, silkafx.com, huabai168.com and two others.

Host names that have two IP addresses:

b.ezdnscenter.com resolves to 183.253.57.210 and 211.99.99.58.

Host names that point to one IP address:

a.ezdnscenter.com resolves to 218.98.111.140.

21js.cn - robtex.com

21js.cn

cn