21class.com - dns.ninja

`21class.com`

DNSSEC	⚠️ Not signed
A	203.95.6.34^{🇨🇳 STN-CN203.95.4.0/22 Route of shanghai science and technology network communication limited company}
NS	`dns1.hichina.com` ⭐
		A	2408:4009:501::9^{🇨🇳 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	`dns2.hichina.com`
		A	2408:4009:501::10^{🇨🇳 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,}
MX	`mx.corpease.net` ⭐
SOA	`dns1.hichina.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=1785262427

WOT: UNKNOWN (69/100)

Same first word

21class.com

Similar names

class21.jp

DNS History

4 records (4 active, 0 former)

●NSdns1.hichina.com2015-09-03 → 2026-07-28 · 2 obs

● 2015-09-03 13:22:22
● 2026-07-28 18:39:06

●NSdns2.hichina.com2015-09-03 → 2026-07-28 · 2 obs

● 2015-09-03 13:22:22
● 2026-07-28 18:39:06

●MXmx.corpease.net2015-09-03 → 2026-07-28 · 2 obs

● 2015-09-03 13:22:22
● 2026-07-28 18:39:06

●A203.95.6.342015-09-03 → 2026-07-28 · 2 obs

● 2015-09-03 13:22:22
● 2026-07-28 18:39:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, a.gtld-servers.net, e.gtld-servers.net, d.gtld-servers.net...	-
21class.com	dns2.hichina.com, dns1.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.44

NS records: dns2.hichina.com, dns1.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21class.com (unsigned zone)

⏱️ Timing

Total: 568ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`203.95.6.34`
NS	2	`dns1.hichina.com, dns2.hichina.com`
MX	1	`mx.corpease.net (pri: 10)`
SOA	1	`dns1.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns2.hichina.com, dns2.hichina.com, dns2.hichina.com...)

Analysis

IP Addresses

21class.com resolves to just one IP address, 203.95.6.34.

Name Servers

21class.com has two authoritative name servers — dns1.hichina.com and dns2.hichina.com.

21class.com shares its NS records with other domains, for example cfjw.com, dalianinf.com, houjiji.cn and two others.

21class.com has name servers in common with a number of other domains — fjzhfy.gov.cn, manchutimesfashion.com, 97jgg.net and yliked.com among them.

These name servers are routinely deployed together with the name servers ns1.alidns.com.

DNS names with 9 IP addresses:

dns1.hichina.com points to 39.96.153.43, 39.96.153.63, 47.118.199.203 and 6 other IP addresses.

dns2.hichina.com points to 39.96.153.44, 39.96.153.54, 47.118.199.204 and 6 other IP addresses.

Mail Servers

The sole mail server for 21class.com is mx.corpease.net.

Among the domains sharing a mail server setup with 21class.com are miracle-decoration.com, shanghaitoys.net, timesparts.com and two others.

There is at least a partial MX overlap between 21class.com and other domains, including zijingang.com, chargefine.com, liang-pin.com and two others.

These mail servers are routinely found in combination with the mail servers mx.c1.icoremail.net, mx2.corpease.net and mx2.c1.icoremail.net.