cotdensanvuon365.com - robtex.com
cotdensanvuon365.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.81.85.221🇻🇳 HOSTINGVIET-AS-VN103.81.85.0/24 HOSTINGVIET-VN | ||||||
| NS | ns1.hostingviet.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.hostingviet.vn | ||||||
| A | 222.255.121.247🇻🇳 VDC222.255.121.0/24 VNPT | ||||||
| PTR | static.vdc.vn | ||||||
| PTR | static.vnpt.vn | ||||||
| MX | mail.cotdensanvuon365.com ⭐ | ||||||
| A | 103.81.85.221🇻🇳 HOSTINGVIET-AS-VN103.81.85.0/24 HOSTINGVIET-VN | ||||||
| TXT | google-site-verification=4wBH8tOqCOgOc3xUW1Uo5UlvVHNxDXEXLDXFs12Ro5s | ||||||
| SOA | ns1.hostingviet.vnhostmaster@cotdensanvuon365.com 2026-05-19 #21 | ||||||
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=1785681162 | ||||||
Subdomains
Same first word
cotdensanvuon365.com |
DNS History
9 records (4 active, 5 former)
●NSns1.hostingviet.vn2026-04-03 → 2026-08-02 · 3 obs
● 2026-04-03 16:21:24
● 2026-08-02 14:36:06
○NSns1.tenten.vn2016-12-15 → 2018-06-06 · 4 obs
● 2018-06-06 15:29:04
○ 2026-04-03 16:21:24
○ 2026-08-02 14:36:06
○NSns1.tenten.vn.cotdensanvuon365.com2016-12-15 → 2018-06-06 · 4 obs
● 2018-06-06 15:29:04
○ 2026-04-03 16:21:24
○ 2026-08-02 14:36:06
●NSns2.hostingviet.vn2026-04-03 → 2026-08-02 · 3 obs
● 2026-04-03 16:21:24
● 2026-08-02 14:36:06
○NSns2.tenten.vn2016-12-15 → 2018-06-06 · 4 obs
● 2018-06-06 15:29:04
○ 2026-04-03 16:21:24
○ 2026-08-02 14:36:06
○NSns3.tenten.vn2016-12-15 → 2018-06-06 · 4 obs
● 2018-06-06 15:29:04
○ 2026-04-03 16:21:24
○ 2026-08-02 14:36:06
●MXmail.cotdensanvuon365.com2026-04-03 → 2026-08-02 · 2 obs
● 2026-08-02 14:36:06
●A103.81.85.2212026-04-03 → 2026-08-02 · 3 obs
● 2026-04-03 16:21:24
● 2026-08-02 14:36:06
○A123.31.43.1812016-12-15 → 2018-06-06 · 4 obs
● 2018-06-06 15:29:04
○ 2026-04-03 16:21:24
○ 2026-08-02 14:36:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| cotdensanvuon365.com | ns1.hostingviet.vn, ns2.hostingviet.vn | - |
✅ Authoritative Response
Server:112.213.89.3
NS records: ns1.hostingviet.vn, ns2.hostingviet.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cotdensanvuon365.com (unsigned zone)
⏱️ Timing
Total: 996ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.81.85.221 |
| NS | 2 | ns2.hostingviet.vn, ns1.hostingviet.vn |
| MX | 1 | mail.cotdensanvuon365.com (pri: 10) |
| TXT | 1 | google-site-verification=4wBH8tOqCOgOc3x |
| SOA | 1 | ns1.hostingviet.vn hostmaster.cotdensanv |
Analysis
Hierarchy
vn.cotdensanvuon365.com and mail.cotdensanvuon365.com each fall under cotdensanvuon365.com as their parent domain.
IP Addresses
cotdensanvuon365.com resolves to just one IP address, 103.81.85.221.
The host names mail.cotdensanvuon365.com, tenten.vn.cotdensanvuon365.com, ns1.tenten.vn.cotdensanvuon365.com and vn.cotdensanvuon365.com all share IP numbers with cotdensanvuon365.com.
Name Servers
DNS delegation for cotdensanvuon365.com points to two name servers: ns1.hostingviet.vn and ns2.hostingviet.vn.
cotdensanvuon365.com shares its NS records with other domains, for example hntgreenhouse.vn, byd-quangninh.com.vn, hntgreenhouse.com and two others.
The name servers of cotdensanvuon365.com overlap at least partially with those of other domains — among them danasniper.com, hoctot-luyencham.com.vn, vicoop.vn and two more.
These name servers commonly co-occur with the name servers ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn and ns4.dotvndns.vn.
Both ns1.hostingviet.vn and ns2.hostingviet.vn have a single IP address each — ns1.hostingviet.vn resolves to 112.213.89.3 while ns2.hostingviet.vn resolves to 222.255.121.247.
Mail Servers
The sole mail server for cotdensanvuon365.com is mail.cotdensanvuon365.com.
mail.cotdensanvuon365.com has exactly one IP number: 103.81.85.221.