tonghoiyhoc.com - robtex.com
tonghoiyhoc.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.7.41.181🇻🇳 SUPERDATA103.7.41.0/24 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 | mx41181.superdata.vn | ||||||
| NS | ns1.pavietnam.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 | 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 | ns3.dotvndns.vn | ||||||
| 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 | ||||||
| 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 | ||||||
| SOA | NS1.PAVIETNAM.VNhostmaster@tonghoiyhoc.com 2026-02-01 #3 | ||||||
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=1778452501 | ||||||
Same first word
tonghoiyhoc.com |
tonghoiyhoc.vn |
DNS History
9 records (6 active, 3 former)
●NSns1.dotvndns.vn2026-05-08 → 2026-05-10 · 3 obs
● 2026-05-08 13:27:50
● 2026-05-10 22:51:08
●NSns1.pavietnam.vn2016-12-16 → 2026-05-10 · 2 obs
● 2026-05-10 22:51:08
●NSns2.dotvndns.vn2026-05-08 → 2026-05-10 · 3 obs
● 2026-05-08 13:27:50
● 2026-05-10 22:51:08
○NSns2.pavietnam.vn2016-12-16 → 2016-12-16 · 3 obs
○ 2026-05-08 13:27:50
○ 2026-05-10 22:51:08
●NSns3.dotvndns.vn2026-05-08 → 2026-05-10 · 3 obs
● 2026-05-08 13:27:50
● 2026-05-10 22:51:08
●NSnsbak.dotvndns.com2026-05-08 → 2026-05-10 · 3 obs
● 2026-05-08 13:27:50
● 2026-05-10 22:51:08
○MXmail.tonghoiyhoc.com2016-12-16 → 2016-12-16 · 3 obs
○ 2026-05-08 13:27:50
○ 2026-05-10 22:51:08
●A103.7.41.1812026-05-08 → 2026-05-10 · 3 obs
● 2026-05-08 13:27:50
● 2026-05-10 22:51:08
○A112.213.89.382016-12-16 → 2016-12-16 · 3 obs
○ 2026-05-08 13:27:50
○ 2026-05-10 22:51:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | i.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, e.gtld-servers.net... | - |
| tonghoiyhoc.com | nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn | 2 records |
✅ Authoritative Response
Server:112.213.89.3
NS records: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for tonghoiyhoc.com (unsigned zone)
⏱️ Timing
Total: 1623ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.7.41.181 |
| NS | 4 | nsbak.dotvndns.com, ns3.dotvndns.vn... |
| SOA | 1 | NS1.PAVIETNAM.VN hostmaster.tonghoiyhoc. |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (nsbak.dotvndns.com, nsbak.dotvndns.com)
Analysis
IP Addresses
tonghoiyhoc.com points to a single IP: 103.7.41.181.
Other host names, for instance voduongngochoa.com.vn, mail.vimido.vn, anninh.org, mail.michaco.com and www.michaco.com share IP numbers with tonghoiyhoc.com.
Name Servers
tonghoiyhoc.com is delegated to five name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn and ns1.pavietnam.vn.
tonghoiyhoc.com partially shares name servers with other domains; examples include aloigia.com, hsvgroup.com.vn, dienanhdaklak.gov.vn, chocon.vn and 7door.vn.
These name servers are often used with the name servers ns2.pavietnam.vn and nsbak.pavietnam.net.
Hostnames with two IP numbers:
The host name nsbak.dotvndns.com points to: 2406:9c80::9000:302 and 112.213.89.22.
The host name ns1.dotvndns.vn points to: 2406:9c80::66 and 112.213.89.3.
The host name ns2.dotvndns.vn points to: 2406:9c80::9000:111 and 222.255.121.247.
The host name ns1.pavietnam.vn points to: 2406:9c80::66 and 112.213.89.3.
Hostnames with one IP number:
The host name ns3.dotvndns.vn points to: 112.213.89.22.
Hostnames that point to 112.213.89.22: nsbak.dotvndns.com and ns3.dotvndns.vn.
Hostnames that point to 2406:9c80::66: ns1.dotvndns.vn and ns1.pavietnam.vn.
Hostnames that point to 112.213.89.3: ns1.dotvndns.vn and ns1.pavietnam.vn.
Note patterns: ns1.dotvndns.vn and ns1.pavietnam.vn share the pair 2406:9c80::66 and 112.213.89.3; nsbak.dotvndns.com and ns3.dotvndns.vn both point to 112.213.89.22.