sedu.vn - robtex.com
sedu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.dichvu25h.com ⭐ | ||||||
| A | 112.213.89.3🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi | ||||||
| PTR | ns1.dotvndns.vn | ||||||
| NS | ns1.dotvndns.vn | ||||||
| A | 2406:9c80::66🇻🇳 SUPERDATA2406:9c80::/48 -VN | ||||||
| PTR | ns1.dotvndns.vn | ||||||
| A | 112.213.89.3🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi | ||||||
| PTR | ns1.dotvndns.vn | ||||||
| NS | ns2.dotvndns.vn | ||||||
| A | 2406:9c80::9000:111🇻🇳 SUPERDATA2406:9c80::/48 -VN | ||||||
| PTR | ns2.dotvndns.vn | ||||||
| A | 222.255.121.247🇻🇳 VDC222.255.121.0/24 VNPT | ||||||
| PTR | static.vdc.vn | ||||||
| PTR | static.vnpt.vn | ||||||
| NS | nsbak.dotvndns.com | ||||||
| A | 2406:9c80::9000:302🇻🇳 SUPERDATA2406:9c80::/48 -VN | ||||||
| PTR | nsbak.dotvndns.com | ||||||
| A | 112.213.89.22🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi | ||||||
| PTR | ns8922.dotvndns.vn | ||||||
| MX | mr.dotvndns.vn ⭐ | ||||||
| A | 222.255.121.227🇻🇳 VDC222.255.121.0/24 VNPT | ||||||
| PTR | mr.pavietnam.vn | ||||||
| TXT | v=spf1 a mx ~all | ||||||
| SOA | ns1.dichvu25h.comhostmaster@sedu.vn 2026-04-16 #62 | ||||||
vn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn | ||||||
| NS | b.dns-servers.vn | ||||||
| NS | c.dns-servers.vn | ||||||
| NS | d.dns-servers.vn | ||||||
| NS | e.dns-servers.vn | ||||||
| NS | f.dns-servers.vn | ||||||
| NS | g.dns-servers.vn | ||||||
| NS | h.dns-servers.vn | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2030756552 | ||||||
Subdomains
api-admin.sedu.vn |
communication.sedu.vn |
Same first word
sedu.co |
sedu.vn |
sedu.ru |
sedu.org.cn |
sedu.us |
sedu.edu.vn |
sedu.cc |
sedu.com.au |
sedu.fr |
sedu.com.br |
sedu.pr.gov.br |
sedu.com.ua |
sedu.es.gov.br |
sedu.ir |
sedu.com.ar |
sedu.se |
sedu.cloud |
sedu.net |
sedu.com |
sedu.in |
sedu.de |
sedu.fi |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.dichvu25h.com2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-11 02:25:10
●NSns1.dotvndns.vn2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-11 02:25:10
●NSns2.dotvndns.vn2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-11 02:25:10
●NSnsbak.dotvndns.com2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-11 02:25:10
●MXmr.dotvndns.vn2026-05-08 → 2026-05-11 · 2 obs
● 2026-05-11 02:25:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| sedu.vn | ns1.dotvndns.vn, nsbak.dotvndns.com, ns2.dotvndns.vn | 4 records |
✅ Authoritative Response
Server:112.213.89.22
NS records: ns1.dotvndns.vn, nsbak.dotvndns.com, ns2.dotvndns.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sedu.vn (unsigned zone)
⏱️ Timing
Total: 2275ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | nsbak.dotvndns.com, ns2.dotvndns.vn... |
| MX | 1 | mr.dotvndns.vn (pri: 10) |
| TXT | 1 | v=spf1 a mx ~all |
| SOA | 1 | ns1.dichvu25h.com hostmaster.sedu.vn |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.dotvndns.vn, ns2.dotvndns.vn, ns1.dotvndns.vn...)
Analysis
Hierarchy
sedu.vn is a parent of api-admin.sedu.vn and communication.sedu.vn.
Name Servers
sedu.vn is delegated to four name servers: ns1.dichvu25h.com, nsbak.dotvndns.com, ns1.dotvndns.vn and ns2.dotvndns.vn.
sedu.vn at least partially shares name servers with other domains, for instance attech.com.vn, doxinh.com.vn, lovehotelgovap.com, qis.com.vn and pcccannhien.vn.
these name servers are commonly used with ns1.pavietnam.vn, ns3.dotvndns.vn, ns2.pavietnam.vn and nsbak.pavietnam.net.
Host names with two IP numbers
nsbak.dotvndns.com points to 2406:9c80::9000:302 and 112.213.89.22
ns1.dotvndns.vn points to 2406:9c80::66 and 112.213.89.3
ns2.dotvndns.vn points to 2406:9c80::9000:111 and 222.255.121.247
Host names with one IP number
ns1.dichvu25h.com points to 112.213.89.3
Host names that point to 112.213.89.3
ns1.dotvndns.vn and ns1.dichvu25h.com
Mail Servers
sedu.vn is handled by a single mail server, mr.dotvndns.vn.
The mail server setup for sedu.vn matches that of other domains, for instance tiamo.vn, meetech.vn, eurostar.biz, vrpacs.com and vanhoado.vn.
sedu.vn shares at least partially some mail servers with other domains, including nanomax.com.vn, kgroup.com.vn, vietrro.org.vn, dacsannanggio.vn and khaidat.com.vn.
these mail servers are often used together with mx2.zoho.com, mx3.zoho.com, mx.zoho.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com.
mr.dotvndns.vn points to a single IP: 222.255.121.227.