bygu.vn - robtex.com
bygu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 210.245.8.134🇻🇳 FPT-AS-AP210.245.8.0/21 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 | ||||||
| NS | ns1.dotvndns.vn ⭐ ⚠️ Not in parent delegation | ||||||
| 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.sapo.vn ⚠️ Not in zone NS records | ||||||
| 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 ⚠️ Not in parent delegation | ||||||
| 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 | ns2.sapo.vn ⚠️ Not in zone NS records | ||||||
| A | 222.255.121.247🇻🇳 VDC222.255.121.0/24 VNPT | ||||||
| PTR | static.vdc.vn | ||||||
| PTR | static.vnpt.vn | ||||||
| MX | mail.bygu.vn ⭐ | ||||||
| A | 210.245.8.134🇻🇳 FPT-AS-AP210.245.8.0/21 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 | ||||||
| TXT | v=spf1 a mx ~all | ||||||
| SOA | ns1.dotvndns.vnhostmaster@bygu.vn 2026-03-26 #2 | ||||||
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=2030763050 | ||||||
Subdomains
mail.bygu.vn |
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSns1.dotvndns.vn2026-05-01 → 2026-05-12 · 2 obs
● 2026-05-12 08:47:52
●NSns2.dotvndns.vn2026-05-01 → 2026-05-12 · 2 obs
● 2026-05-12 08:47:52
●MXmail.bygu.vn2026-05-01 → 2026-05-12 · 2 obs
● 2026-05-12 08:47:52
●A210.245.8.1342026-05-01 → 2026-05-12 · 2 obs
● 2026-05-12 08:47:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| bygu.vn | ns1.sapo.vn, ns2.sapo.vn | - |
✅ Authoritative Response
Server:112.213.89.3
NS records: ns1.sapo.vn, ns2.sapo.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for bygu.vn (unsigned zone)
⏱️ Timing
Total: 3247ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.245.8.134 |
| NS | 2 | ns1.dotvndns.vn, ns2.dotvndns.vn |
| MX | 1 | mail.bygu.vn (pri: 10) |
| TXT | 1 | v=spf1 a mx ~all |
| SOA | 1 | ns1.dotvndns.vn hostmaster.bygu.vn |
Analysis
Hierarchy
The parent of mail.bygu.vn is bygu.vn.
IP Addresses
bygu.vn points to a single IP: 210.245.8.134.
Other host names, for instance otogo.vn, mail.onedoshop.com, mail.elec-store.com, mail.suachuadieuhoa24h.net and afengmart.com share IP numbers with bygu.vn.
Name Servers
bygu.vn's delegation is handled by four name servers: ns1.dotvndns.vn, ns2.dotvndns.vn, ns1.sapo.vn and ns2.sapo.vn.
bygu.vn partially shares name servers with other domains; examples include vnqrpay.vn, mamnonbaominh.edu.vn, link.vn, phuqui.net and kindergartenvietnam.edu.vn.
These name servers are commonly used with nsbak.dotvndns.com, ns1.pavietnam.vn, ns2.pavietnam.vn, ns3.dotvndns.vn, nsbak.pavietnam.net and ns1.dkt.com.vn.
Host names with two IP numbers
- ns1.dotvndns.vn points to 2406:9c80::66 and 112.213.89.3
- ns2.dotvndns.vn points to 2406:9c80::9000:111 and 222.255.121.247
Host names with one IP number
- ns1.sapo.vn points to 112.213.89.3
- ns2.sapo.vn points to 222.255.121.247
Host names pointing to 112.213.89.3: ns1.dotvndns.vn and ns1.sapo.vn
Host names pointing to 222.255.121.247: ns2.dotvndns.vn and ns2.sapo.vn
Mail Servers
bygu.vn is handled by a single mail server, mail.bygu.vn.
mail.bygu.vn points to a single IP: 210.245.8.134.