21expo.net - robtex.com
21expo.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 23.224.201.195🇺🇸 CNSERVERSLLC23.224.201.0/24 | ||||||
| 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 | ||||||
| MX | hzmx01.mxmail.netease.com ⭐ | ||||||
| A | 47.251.71.119🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| A | 47.251.84.126🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| MX | hzmx02.mxmail.netease.com(10) | ||||||
| A | 47.251.71.119🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| A | 47.251.84.126🇺🇸 Alibaba-Cloud47.251.0.0/17 Proxy-registered route object | ||||||
| TXT | v=spf1 include:spf.163.com -all | ||||||
| SOA | a.ezdnscenter.comdnsadmin@ezdnscenter.com serial=1751342706 | ||||||
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.netnstld@verisign-grs.com serial=1778532091 | ||||||
Subdomains
www.21expo.net |
Same first word
21expo.net |
DNS History
19 records (5 active, 14 former)
●NSa.ezdnscenter.com2026-04-22 → 2026-05-11 · 3 obs
● 2026-04-22 14:18:22
● 2026-05-11 20:52:14
●NSb.ezdnscenter.com2026-04-22 → 2026-05-11 · 3 obs
● 2026-04-22 14:18:22
● 2026-05-11 20:52:14
○NSns1.72dns.com2015-07-17 → 2015-11-14 · 4 obs
● 2015-11-14 21:56:54
○ 2016-12-07 14:01:40
○ 2026-05-11 20:52:14
○NSns1.ezdnscenter.com2016-12-07 → 2017-09-30 · 5 obs
● 2016-12-07 14:01:40
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○NSns2.ezdnscenter.com2017-09-30 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○NSns2.idc1.cn2015-07-17 → 2015-11-14 · 4 obs
● 2015-11-14 21:56:54
○ 2017-09-30 05:10:10
○ 2026-05-11 20:52:14
○NSns3.ezdnscenter.com2017-09-30 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○NSns4.ezdnscenter.com2017-09-30 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○NSns5.ezdnscenter.com2017-09-30 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○NSns6.ezdnscenter.com2017-09-30 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
●MXhzmx01.mxmail.netease.com2026-04-22 → 2026-05-11 · 3 obs
● 2026-04-22 14:18:22
● 2026-05-11 20:52:14
●MXhzmx02.mxmail.netease.com2026-04-22 → 2026-05-11 · 3 obs
● 2026-04-22 14:18:22
● 2026-05-11 20:52:14
○MXmx.ym.163.com2015-07-17 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○A114.80.156.1082015-07-17 → 2015-11-14 · 4 obs
● 2015-11-14 21:56:54
○ 2016-12-07 14:01:40
○ 2026-05-11 20:52:14
●A23.224.201.1952026-04-22 → 2026-05-11 · 3 obs
● 2026-04-22 14:18:22
● 2026-05-11 20:52:14
○A23.234.26.1712016-12-07 → 2016-12-07 · 4 obs
● 2016-12-07 14:01:40
○ 2017-09-30 05:10:10
○ 2026-05-11 20:52:14
○A23.252.164.2502017-09-30 → 2017-09-30 · 4 obs
● 2017-09-30 05:10:10
○ 2026-04-22 14:18:22
○ 2026-05-11 20:52:14
○CNAME792522.ichengyun.net2015-07-17 → 2015-11-14 · 4 obs
● 2015-11-14 21:56:54
○ 2016-12-07 14:01:40
○ 2026-05-11 20:52:14
○CNAMEshwgsxnw04.cdn.ichengyun.net2015-11-14 → 2015-11-14 · 4 obs
● 2015-11-14 21:56:54
○ 2016-12-07 14:01:40
○ 2026-05-11 20:52:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | k.gtld-servers.net, f.gtld-servers.net, c.gtld-servers.net, b.gtld-servers.net... | - |
| 21expo.net | a.ezdnscenter.com, b.ezdnscenter.com | - |
✅ Authoritative Response
Server:218.98.111.140
NS records: a.ezdnscenter.com, b.ezdnscenter.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21expo.net (unsigned zone)
⏱️ Timing
Total: 1577ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.224.201.195 |
| NS | 2 | a.ezdnscenter.com, b.ezdnscenter.com |
| MX | 2 | hzmx02.mxmail.netease.com (pri: 10), hzmx01.mxmail.netease.com (pri: 5) |
| TXT | 1 | v=spf1 include:spf.163.com -all |
| SOA | 1 | a.ezdnscenter.com dnsadmin.ezdnscenter.c |
Analysis
Hierarchy
21expo.net is the parent of www.21expo.net.
IP Addresses
21expo.net resolves to a single IP address: 23.224.201.195.
Other host names including airqualitynju.com, qsminda.com, alumihk.com, kinflag.com and zjicpcc.cn share IP numbers with 21expo.net.
Name Servers
21expo.net's delegation uses two name servers, a.ezdnscenter.com and b.ezdnscenter.com.
21expo.net shares the same name server setup as other domains, for example jsenxia.com, lyghuaneng.com, cdsjgg.com, priceboon.com and ukpackpackaging.com.
Hosts with two IPs:
b.ezdnscenter.com points to 183.253.57.210 and 211.99.99.58.
Hosts with one IP:
a.ezdnscenter.com points to 218.98.111.140.
Mail Servers
21expo.net is handled by two mail servers: hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.
21expo.net shares its mail server setup with other domains, including transline-tech.com, wuxixds.com, eletek.com, qdqscx.com and bjmshy.com.
The mail servers for 21expo.net are shared with other domains, for instance yaodatech.com, bobby-bartz.com, jtoss.com, linool.com and tujc.com.
Names with two IPs:
hzmx01.mxmail.netease.com points to 47.251.71.119 and 47.251.84.126.
hzmx02.mxmail.netease.com points to 47.251.71.119 and 47.251.84.126.
Names pointing to 47.251.71.119: hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.
Names pointing to 47.251.84.126: hzmx01.mxmail.netease.com and hzmx02.mxmail.netease.com.