ittb.vn - robtex.com
ittb.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 45.32.121.15🇸🇬 AS-VULTR45.32.96.0/19 Vultr Assigned Prefix | ||||||
| PTR | 45.32.121.15.vultrusercontent.com | ||||||
| NS | dns1.vmms.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.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 | ns2.pavietnam.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.pavietnam.net | ||||||
| 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 | mail.ittb.vn ⭐ | ||||||
| A | 42.112.36.63🇻🇳 FPT-AS-AP42.112.36.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 10th floor, MITEC Tower, Duong Dinh Nghe, Cau Giay, Hanoi | ||||||
| PTR | webmail36-63.vmms.vn | ||||||
| TXT | v=spf1 a mx ip4:42.112.36.63 ~all | ||||||
| SOA | dns1.vmms.vnhostmaster@ittb.vn 2026-05-05 #14 | ||||||
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=2030753533 | ||||||
Subdomains
mail.ittb.vn |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSns1.pavietnam.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 21:04:06
●NSns2.pavietnam.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 21:04:06
●NSnsbak.pavietnam.net2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 21:04:06
●MXmail.ittb.vn2026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 21:04:06
●A45.32.121.152026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 21:04:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| ittb.vn | ns2.pavietnam.vn, nsbak.pavietnam.net, ns1.pavietnam.vn | 4 records |
✅ Authoritative Response
Server:222.255.121.247
NS records: ns2.pavietnam.vn, nsbak.pavietnam.net, ns1.pavietnam.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ittb.vn (unsigned zone)
⏱️ Timing
Total: 1560ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 45.32.121.15 |
| NS | 3 | nsbak.pavietnam.net, ns1.pavietnam.vn... |
| MX | 1 | mail.ittb.vn (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:42.112.36.63 ~all |
| SOA | 1 | dns1.vmms.vn hostmaster.ittb.vn |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.pavietnam.vn, ns1.pavietnam.vn, ns2.pavietnam.vn...)
Analysis
Hierarchy
ittb.vn is a parent of mail.ittb.vn.
IP Addresses
ittb.vn points to a single IP address: 45.32.121.15.
Other host names, for instance thamtutuhoanglong.com, edumatch.edu.vn, decaldankinh.net and eduline.edu.vn share IP numbers with ittb.vn.
Name Servers
ittb.vn is delegated to four name servers: nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn and dns1.vmms.vn.
At least part of the name servers for ittb.vn are shared with other domains, for instance meraki.com.vn, msichoices.org.vn, metaconnect.vn, hungnguyen.vn and thamtuhoangchung.com.
These name servers are often used together with the name servers dns2.vmms.vn, ns1.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, ns3.dotvndns.vn, dns3.vmms.vn and ns1.vmms.vn.
Host names and IP mappings
Two IPs per host:
nsbak.pavietnam.net points to: 2406:9c80::9000:302 and 112.213.89.22
ns1.pavietnam.vn points to: 2406:9c80::66 and 112.213.89.3
ns2.pavietnam.vn points to: 2406:9c80::9000:111 and 222.255.121.247
Single IP:
dns1.vmms.vn points to: 112.213.89.3
Other hosts pointing to 112.213.89.3:
ns1.pavietnam.vn and dns1.vmms.vn
Mail Servers
The mail server for ittb.vn is mail.ittb.vn.
Host mail.ittb.vn points to IP 42.112.36.63.