`57class.net`

DNSSEC	⚠️ Not signed
NS	`f1g1ns1.dnspod.net` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	1.14.119.35^{🇨🇳 TENCENT-NET-AP1.14.64.0/18}
			PTR	`ip-1-14-119-35.defastlink.net`
		A	111.13.13.35^{🇨🇳 CHINAMOBILE-CN111.13.0.0/16 CMI (Customer Route)}
			PTR	`ip-111-13-13-35.defastlink.net`
		A	117.135.128.235^{🇨🇳 CHINAMOBILE-CN117.135.128.0/24 CMI (Customer Route)}
			PTR	`(root)`
		A	125.94.59.235^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	163.177.5.35^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
NS	`f1g1ns2.dnspod.net`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	1.13.76.35^{🇨🇳 TENCENT-NET-AP1.13.64.0/18}
		A	36.155.149.35^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	101.227.168.35^{🇨🇳 SHANGHAITELECOM101.227.168.0/23 SHIDC}
		A	106.39.207.235^{🇨🇳 CHINA-1106.39.192.0/19 China Telecom Beijing Co. Ltd.}
		A	111.206.98.235^{🇨🇳 CHINA169-BJ111.206.98.0/24}
		A	220.196.136.35^{🇨🇳 UNICOM-SHFT-IDC220.196.136.0/24}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`MS=ms76149809`
TXT	`MS=3BF2957747C54AE1B323D6EABDBB8519DBA769BA`
SOA	`f1g1ns1.dnspod.net`freednsadmin@dnspod.com serial=1747711575

`net`

	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=1776323752

Subdomains

www.57class.net

mail.57class.net

Same first word

57class.net

DNS History

12 records (4 active, 8 former)

●NSf1g1ns1.dnspod.net2026-03-03 → 2026-04-16 · 3 obs

○ 2017-04-04 07:14:38
● 2026-03-03 15:39:54
● 2026-04-16 07:44:54

●NSf1g1ns2.dnspod.net2026-03-03 → 2026-04-16 · 3 obs

○ 2017-04-04 07:14:38
● 2026-03-03 15:39:54
● 2026-04-16 07:44:54

○NSn3319.ns.yunjiasu.com2016-08-14 → 2016-08-14 · 4 obs

○ 2016-03-19 01:45:24
● 2016-08-14 11:12:30
○ 2017-04-04 07:14:38
○ 2026-04-16 07:44:54

○NSn51.ns.yunjiasu.com2016-08-14 → 2016-08-14 · 4 obs

○ 2016-03-19 01:45:24
● 2016-08-14 11:12:30
○ 2017-04-04 07:14:38
○ 2026-04-16 07:44:54

○NSns1.360wzb.com2015-08-23 → 2017-04-04 · 6 obs

● 2015-08-23 10:21:32
● 2016-03-19 01:45:24
○ 2016-08-14 11:12:30
● 2017-04-04 07:14:38
○ 2026-03-03 15:39:54
○ 2026-04-16 07:44:54

○NSns2.360wzb.com2015-08-23 → 2017-04-04 · 6 obs

● 2015-08-23 10:21:32
● 2016-03-19 01:45:24
○ 2016-08-14 11:12:30
● 2017-04-04 07:14:38
○ 2026-03-03 15:39:54
○ 2026-04-16 07:44:54

●MXmxbiz1.qq.com2015-08-23 → 2026-04-16 · 2 obs

● 2015-08-23 10:21:32
● 2026-04-16 07:44:54

●MXmxbiz2.qq.com2015-08-23 → 2026-04-16 · 2 obs

● 2015-08-23 10:21:32
● 2026-04-16 07:44:54

○A125.88.190.52015-08-23 → 2015-08-23 · 3 obs

● 2015-08-23 10:21:32
○ 2015-12-21 13:30:12
○ 2026-04-16 07:44:54

○A222.73.144.1842015-12-21 → 2015-12-21 · 4 obs

○ 2015-08-23 10:21:32
● 2015-12-21 13:30:12
○ 2016-03-19 01:45:24
○ 2026-04-16 07:44:54

○A58.118.228.102016-08-14 → 2017-04-04 · 5 obs

○ 2016-03-19 01:45:24
● 2016-08-14 11:12:30
● 2017-04-04 07:14:38
○ 2026-03-03 15:39:54
○ 2026-04-16 07:44:54

○A61.160.224.2112016-03-19 → 2016-03-19 · 4 obs

○ 2015-12-21 13:30:12
● 2016-03-19 01:45:24
○ 2016-08-14 11:12:30
○ 2026-04-16 07:44:54

🔍 DNS Trace

Analysis

Hierarchy

57class.net is a parent of www.57class.net and mail.57class.net.

Name Servers

57class.net is delegated to two name servers: f1g1ns1.dnspod.net and f1g1ns2.dnspod.net.

57class.net uses the same name server setup as other domains, for instance knf.com.cn, killadm.com, aihenai.cn, zhuque.me and feib.cn.

57class.net shares name servers with other domains at least partially, for instance kadian.cn, bot01iv.cfd, 46xjx.icu, chat18sp.cfd and wzmcevlx.com.

These name servers are often used with a.dnspod.com, b.dnspod.com, c.dnspod.com, equuleus.dnspod.net and near.dnspod.net.

Host names with eight IP numbers:

The host name f1g1ns2.dnspod.net points to: 2402:4e00:111:fff::c, 1.12.0.1, 1.13.76.35, 36.155.149.35, 101.227.168.35, 106.39.207.235, 111.206.98.235 and 220.196.136.35.

Host names with seven IP numbers:

The host name f1g1ns1.dnspod.net points to: 2402:4e00:1470:2::e, 1.12.0.4, 1.14.119.35, 111.13.13.35, 117.135.128.235, 125.94.59.235 and 163.177.5.35.

Mail Servers

57class.net is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

57class.net shares the same mail server setup as other domains, including edutvb.com, smdpackaging.com, 168tex.com, ecfront.com and battife.com.

57class.net shares some mail servers with other domains, including feiplay.com, appgrowing.net, uniqtab.com, miaosha8.com and kemppisteel.com.

57class.net - robtex.com

57class.net

net