ctoptimal.vn - robtex.com
ctoptimal.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.138.88.64🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET | ||||||
| NS | ns1.matbao.vn ⭐ | ||||||
| A | 13.250.228.99🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix | ||||||
| PTR | ec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com | ||||||
| A | 103.110.128.60🇻🇳 AXYS-VN103.110.128.0/23 | ||||||
| NS | ns2.matbao.vn | ||||||
| A | 35.198.203.127🇸🇬 Google35.198.192.0/20 | ||||||
| PTR | 127.203.198.35.bc.googleusercontent.com | ||||||
| A | 103.138.89.11🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET | ||||||
| SOA | ns1.matbao.vnadmin@matbao.com 2023-04-28 #1 | ||||||
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=2030753591 | ||||||
Subdomains
www.ctoptimal.vn |
Same first word
ctoptimal.com.vn |
ctoptimal.vn |
Similar names
DNS History
3 records (3 active, 0 former)
●A103.138.88.642026-05-01 → 2026-05-09 · 2 obs
● 2026-05-09 23:46:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| ctoptimal.vn | ns1.matbao.vn, ns2.matbao.vn | 2 records |
✅ Authoritative Response
Server:103.138.89.11
NS records: ns1.matbao.vn, ns2.matbao.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ctoptimal.vn (unsigned zone)
⏱️ Timing
Total: 1140ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.138.88.64 |
| NS | 2 | ns1.matbao.vn, ns2.matbao.vn |
| SOA | 1 | ns1.matbao.vn admin.matbao.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.matbao.vn, ns2.matbao.vn)
Analysis
Hierarchy
ctoptimal.vn is the parent of www.ctoptimal.vn.
IP Addresses
ctoptimal.vn resolves to one IP number: 103.138.88.64.
other host names including ingiabao.vn, ganesha.edu.vn, ipcs.mpi.gov.vn, www.sam.org.vn and mail.anu.edu.vn share IP numbers with ctoptimal.vn.
Name Servers
ctoptimal.vn is delegated to two name servers ns1.matbao.vn and ns2.matbao.vn.
ctoptimal.vn shares the same name server setup as other domains, for instance muagimuadi.vn, thienan.net.vn, kienthucnhadat.vn, otohondakimthanh.com.vn and paramed.vn.
ctoptimal.vn at least partially shares name servers with other domains, for instance binhchuan.com.vn, xetaivinhphat.com.vn, 51.2.78.112.in-addr.arpa, alphaworks.com.vn and vietsports.vn.
These name servers are commonly used with ns1.matbao.com, ns2.matbao.com and ns-bak.matbao.com.
Host names with two IP numbers:
The host name ns1.matbao.vn points to 13.250.228.99 and 103.110.128.60; the host name ns2.matbao.vn points to 35.198.203.127 and 103.138.89.11.