changedu.com - dns.ninja
changedu.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 221.231.138.55🇨🇳 CHINATELECOM-JIANGSU-NANJING-IDC221.231.136.0/21 CTJS NJ-IDC | ||||||
| NS | dns7.4cun.com ⭐ | ||||||
| A | 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8🇨🇳 Alibaba-Cloud2408:4005::/33 | ||||||
| A | 61.172.183.74🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC | ||||||
| NS | dns.4cun.com ⚠️ Not in zone NS records | ||||||
| NS | dns4.51dns.top ⚠️ Not in zone NS records | ||||||
| A | 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8🇨🇳 Alibaba-Cloud2408:4005::/33 | ||||||
| A | 219.138.102.210🇨🇳 CHINATELECOM-HUBEI-YICHANG-IDC219.138.102.0/24 yichang | ||||||
| MX | mx1.sxy.top ⭐ | ||||||
| A | 101.237.133.12🇨🇳 CHINA-1101.237.128.0/20 China Telecom Beijing Co. Ltd. | ||||||
| PTR | outhb2.global-mail.cn | ||||||
| A | 117.50.223.79🇨🇳 CHINA169-BJ117.50.192.0/19 China Telecom Beijing Co. Ltd. | ||||||
| MX | mx.sxy.top(50) | ||||||
| A | 101.237.133.12🇨🇳 CHINA-1101.237.128.0/20 China Telecom Beijing Co. Ltd. | ||||||
| PTR | outhb2.global-mail.cn | ||||||
| TXT | v=spf1 include:spfv.sxy.top -all | ||||||
| SOA | dns.4cun.comadmin@changedu.com serial=1772527613 | ||||||
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.netnstld@verisign-grs.com serial=1785271982 | ||||||
Same first word
changedu.com |
Similar names
educhang.co.kr |
daucheng.com.tw |
daechung.es.kr |
chudange.com |
hugdance.com |
dacheung.net |
dacheung.cn |
daechung.com |
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DNS History
11 records (6 active, 5 former)
●NSdns4.51dns.top2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 00:38:16
● 2026-07-28 20:53:38
●NSdns7.4cun.com2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 00:38:16
● 2026-07-28 20:53:38
●MXmx.sxy.top2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 00:38:16
● 2026-07-28 20:53:38
○MXmx1.4cun.com2015-07-04 → 2017-04-02 · 5 obs
● 2015-07-04 12:47:52
● 2017-04-02 14:51:52
○ 2026-06-13 00:38:16
○ 2026-07-28 20:53:38
●MXmx1.sxy.top2026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 00:38:16
● 2026-07-28 20:53:38
○A221.231.138.352015-07-04 → 2016-03-16 · 5 obs
● 2015-07-04 12:47:52
● 2016-03-16 11:40:26
○ 2016-07-15 08:50:02
○ 2026-07-28 20:53:38
●A221.231.138.552026-06-13 → 2026-07-28 · 3 obs
● 2026-06-13 00:38:16
● 2026-07-28 20:53:38
○A221.231.139.92016-07-15 → 2017-04-02 · 5 obs
● 2016-07-15 08:50:02
● 2017-04-02 14:51:52
○ 2026-06-13 00:38:16
○ 2026-07-28 20:53:38
○CNAMEip.a77.80data.net2017-04-02 → 2017-04-02 · 3 obs
○ 2026-06-13 00:38:16
○ 2026-07-28 20:53:38
○CNAMEnewresolve.a77.80data.net2017-04-02 → 2017-04-02 · 3 obs
○ 2026-06-13 00:38:16
○ 2026-07-28 20:53:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, a.gtld-servers.net, g.gtld-servers.net, h.gtld-servers.net... | - |
| changedu.com | dns7.4cun.com, dns4.51dns.top | 2 records |
✅ Authoritative Response
Server:219.138.102.210
NS records: dns7.4cun.com, dns4.51dns.top
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for changedu.com (unsigned zone)
⏱️ Timing
Total: 852ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 221.231.138.55 |
| MX | 2 | mx.sxy.top (pri: 5), mx1.sxy.top (pri: 50) |
| TXT | 1 | v=spf1 include:spfv.sxy.top -all |
| SOA | 1 | dns.4cun.com admin.changedu.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns7.4cun.com, dns7.4cun.com)
Analysis
IP Addresses
changedu.com has exactly one IP address — 221.231.138.55.
ip.a101.80data.net, xjtianshan.com, fcmcn.com plus two other host names have IP numbers in common with changedu.com.
Name Servers
changedu.com is delegated to three name servers: dns7.4cun.com, dns.4cun.com and dns4.51dns.top.
changedu.com shares at least some of its name servers with other domains, including jcrhy.com, szsjh56.com, zhixianshai.com and two others.
These name servers are frequently seen alongside dns3.4cun.com, dns8.51dns.top, dns8.4cun.com and 7 other name servers.
dns7.4cun.com and dns4.51dns.top each resolve to two IP addresses: dns7.4cun.com points to 61.172.183.74 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8, while dns4.51dns.top points to 219.138.102.210 and 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8.
dns7.4cun.com and dns4.51dns.top are host names that each point to 2408:4005:3dc:af00:a6be:339e:a1a0:d2b8 IP addresses.
Mail Servers
changedu.com uses two mail servers, mx1.sxy.top and mx.sxy.top.
The mail server setup of changedu.com matches that of other domains such as fastshipservice.com, jsjtzb.com, source-accessory.com and two others.
At least some of the mail servers used by changedu.com are shared with other domains: khpro.com, hytce.com, xtiec.com and two others among them.
Host names pointing to two IP addresses:
mx1.sxy.top points to 101.237.133.12 and 117.50.223.79.
Host names resolving to a single IP address:
mx.sxy.top points to 101.237.133.12.
mx1.sxy.top and mx.sxy.top are host names that each point to 101.237.133.12 IP addresses.