reference.vn - dns.ninja
reference.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.221.223.20🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-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 | 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 | 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 | mr.dotvndns.vn ⭐ | ||||||
| A | 222.255.121.227🇻🇳 VDC222.255.121.0/24 VNPT | ||||||
| PTR | mr.pavietnam.vn | ||||||
| SOA | ns2.pavietnam.vnhostmaster@reference.vn 2025-03-15 #4 | ||||||
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=2030881681 | ||||||
Subdomains
www.reference.vn |
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
○NSns1.dotvndns.vn2019-12-23 → 2019-12-23 · 3 obs
○ 2026-02-21 17:59:20
○ 2026-06-12 18:35:36
●NSns1.pavietnam.vn2019-12-23 → 2026-06-12 · 2 obs
● 2026-06-12 18:35:36
●NSns2.pavietnam.vn2019-12-23 → 2026-06-12 · 2 obs
● 2026-06-12 18:35:36
●NSnsbak.pavietnam.net2019-12-23 → 2026-06-12 · 2 obs
● 2026-06-12 18:35:36
●MXmr.dotvndns.vn2019-12-23 → 2026-06-12 · 2 obs
● 2026-06-12 18:35:36
●A103.221.223.202019-12-23 → 2026-06-12 · 2 obs
● 2026-06-12 18:35:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| reference.vn | nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn | 4 records |
✅ Authoritative Response
Server:222.255.121.247
NS records: nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for reference.vn (unsigned zone)
⏱️ Timing
Total: 1910ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.221.223.20 |
| NS | 3 | nsbak.pavietnam.net, ns2.pavietnam.vn... |
| MX | 1 | mr.dotvndns.vn (pri: 10) |
| SOA | 1 | ns2.pavietnam.vn hostmaster.reference.vn |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.pavietnam.vn, ns1.pavietnam.vn, ns2.pavietnam.vn...)
Analysis
Hierarchy
reference.vn is a parent domain of www.reference.vn.
IP Addresses
reference.vn resolves to just one IP address, 103.221.223.20.
Two other host names, along with dayhoctienghan.edu.vn, bbprobe.bilico.vn and owjflcpanel.dayhoctienghan.edu.vn, also share IP numbers with reference.vn.
Name Servers
The authoritative name servers for reference.vn are nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn — three in total.
reference.vn shares at least some of its name servers with other domains, including jandco.com.vn, messagecoffee.com, minhanhphat.com and two others.
These name servers are frequently paired with the name servers ns2.dotvndns.vn, ns1.dotvndns.vn and nsbak.dotvndns.com.
nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn all resolve to exactly two IP numbers apiece: nsbak.pavietnam.net → 112.213.89.22 and 2406:9c80::9000:302; ns1.pavietnam.vn → 112.213.89.3 and 2406:9c80::66; ns2.pavietnam.vn → 222.255.121.247 and 2406:9c80::9000:111.
Mail Servers
The sole mail server for reference.vn is mr.dotvndns.vn.
Among the domains sharing a mail server setup with reference.vn are daycuroanhapkhau.com, orgalife.net, naso.vn and two others.
There is at least a partial MX overlap between reference.vn and other domains, including benhvien115.vn, vietart.net.vn, nanomax.com.vn and two others.
mr.dotvndns.vn directs to just one IP number, 222.255.121.227.