gcos.vn - robtex.com
gcos.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 199.27.135.247🇻🇳 Cloudflare199.27.134.0/23 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| 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 | ||||||
| MX | mail.gcos.vn ⭐ | ||||||
| TXT | v=spf1 mx include:42.117.246.101 -all | ||||||
| SOA | ns1.matbao.vnadmin@matbao.com 2026-01-16 #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=2030754811 | ||||||
Subdomains
mail.gcos.vn |
Same first word
gcos.com |
gcos.nl |
gcos.ca |
gcos.ru |
gcos.eu |
gcos.fr |
gcos.at |
gcos.or.kr |
gcos.net |
gcos.pl |
gcos.vn |
gcos.dk |
gcos.ch |
gcos.jp |
gcos.me |
gcos.org |
Similar names
DNS History
4 records (4 active, 0 former)
●MXmail.gcos.vn2026-05-01 → 2026-05-10 · 2 obs
● 2026-05-10 16:43:46
●A199.27.135.2472026-05-01 → 2026-05-10 · 2 obs
● 2026-05-10 16:43:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | 16 records |
| gcos.vn | ns2.matbao.vn, ns1.matbao.vn | 2 records |
✅ Authoritative Response
Server:103.138.89.11
NS records: ns2.matbao.vn, ns1.matbao.vn
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1378ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 199.27.135.247 |
| NS | 2 | ns1.matbao.vn, ns2.matbao.vn |
| MX | 1 | mail.gcos.vn (pri: 10) |
| TXT | 1 | v=spf1 mx include:42.117.246.101 -all |
| SOA | 1 | ns1.matbao.vn admin.matbao.com |
📌 Glue Records Collected
Total: 18
In-bailiwick: 16 (a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn...)
Out-of-bailiwick: 2 (ns2.matbao.vn, ns1.matbao.vn)
Analysis
Hierarchy
mail.gcos.vn is a child of gcos.vn.
IP Addresses
gcos.vn resolves to one IP number: 199.27.135.247.
Other host names, for instance bilojewelry.com, sacmauthethao.com, koroni.shop, haisen.vn and smartvt.vn share IP numbers with gcos.vn.
Name Servers
gcos.vn's delegation uses two name servers: ns1.matbao.vn and ns2.matbao.vn.
gcos.vn uses the same name server setup as other domains, such as waterpointland.vn, goldensmilefilm.com.vn, megagroup.com.vn, masterise-oceanpark3.com.vn and shopcamerahd.vn.
gcos.vn at least partially shares name servers with other domains, including cleanfood.com.vn, odclick.com, nongsansachlamdong.com, nghiepvudulich.net and mamnondomdom.edu.vn.
these name servers are commonly used alongside the name servers ns1.matbao.com, ns2.matbao.com, ns-bak.matbao.com, ns3.matbao.vn and ns4.matbao.vn.
Host names with two IPs:
ns1.matbao.vn points to 13.250.228.99 and 103.110.128.60
ns2.matbao.vn points to 35.198.203.127 and 103.138.89.11