biochem.vn - robtex.com
biochem.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 125.253.121.55🇻🇳 ODS-AS-VN125.253.121.0/24 ODSJSC-VN | ||||||
| PTR | (root) | ||||||
| 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.biochem.vn ⭐ | ||||||
| A | 112.78.15.81🇻🇳 ODS-AS-VN112.78.15.0/24 ODSJSC-VN | ||||||
| PTR | (root) | ||||||
| TXT | v=spf1 a mx ip4:112.78.15.81 include:dn(0x736578)it.com ~all | ||||||
| SOA | ns1.pavietnam.vnhostmaster@biochem.vn 2025-03-03 #28 | ||||||
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=2030761098 | ||||||
Subdomains
Same first word
Similar names
DNS History
11 records (5 active, 6 former)
○NSns1.dotvndns.vn2017-03-27 → 2020-01-30 · 4 obs
● 2020-01-30 10:07:30
○ 2026-05-01 12:46:40
○ 2026-05-12 00:38:10
●NSns1.pavietnam.vn2026-05-01 → 2026-05-12 · 3 obs
● 2026-05-01 12:46:40
● 2026-05-12 00:38:10
○NSns2.dotvndns.vn2017-03-27 → 2020-01-30 · 4 obs
● 2020-01-30 10:07:30
○ 2026-05-01 12:46:40
○ 2026-05-12 00:38:10
●NSns2.pavietnam.vn2026-05-01 → 2026-05-12 · 3 obs
● 2026-05-01 12:46:40
● 2026-05-12 00:38:10
○NSnsbak.dotvndns.com2017-03-27 → 2020-01-30 · 4 obs
● 2020-01-30 10:07:30
○ 2026-05-01 12:46:40
○ 2026-05-12 00:38:10
○NSnsbak.dotvndns.vn2017-03-27 → 2020-01-30 · 4 obs
● 2020-01-30 10:07:30
○ 2026-05-01 12:46:40
○ 2026-05-12 00:38:10
●NSnsbak.pavietnam.net2026-05-01 → 2026-05-12 · 3 obs
● 2026-05-01 12:46:40
● 2026-05-12 00:38:10
●MXmail.biochem.vn2017-03-27 → 2026-05-12 · 2 obs
● 2026-05-12 00:38:10
○A125.253.121.532020-01-30 → 2020-01-30 · 4 obs
● 2020-01-30 10:07:30
○ 2026-05-01 12:46:40
○ 2026-05-12 00:38:10
●A125.253.121.552026-05-01 → 2026-05-12 · 3 obs
● 2026-05-01 12:46:40
● 2026-05-12 00:38:10
○A199.189.253.22017-03-27 → 2017-03-27 · 3 obs
○ 2020-01-30 10:07:30
○ 2026-05-12 00:38:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| biochem.vn | ns1.pavietnam.vn, nsbak.pavietnam.net, ns2.pavietnam.vn | 4 records |
✅ Authoritative Response
Server:222.255.121.247
NS records: ns1.pavietnam.vn, nsbak.pavietnam.net, ns2.pavietnam.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for biochem.vn (unsigned zone)
⏱️ Timing
Total: 2145ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 125.253.121.55 |
| NS | 3 | ns1.pavietnam.vn, ns2.pavietnam.vn... |
| MX | 1 | mail.biochem.vn (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:112.78.15.81 include:dns |
| SOA | 1 | ns1.pavietnam.vn hostmaster.biochem.vn |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns1.pavietnam.vn, ns2.pavietnam.vn, ns1.pavietnam.vn...)
Analysis
Hierarchy
biochem.vn is parent of mail.biochem.vn and www.biochem.vn.
IP Addresses
biochem.vn points to a single IP number: 125.253.121.55.
other host names for instance www.ppa.vn, www.biochem.vn, khahoang.vn, dulichvungtau.com and ppa.vn share IP numbers with biochem.vn.
Name Servers
biochem.vn is delegated to three name servers: nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.
biochem.vn at least partially shares name servers with other domains, for instance suthienthanh.vn, encoenergy.com.vn, choco.vn, tigermall.vn and tranducgroup.com.
These name servers are commonly used alongside the name servers ns1.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, nsbak.pavietnam.vn and ns1.nina.vn.
Host names with two IP numbers:
Host nsbak.pavietnam.net points to 2406:9c80::9000:302 and 112.213.89.22.
Host ns1.pavietnam.vn points to 2406:9c80::66 and 112.213.89.3.
Host ns2.pavietnam.vn points to 2406:9c80::9000:111 and 222.255.121.247.
Mail Servers
biochem.vn is handled by a single mail server, mail.biochem.vn.
Host name mail.biochem.vn points to IP address 112.78.15.81.