rubygroup.vn - dns.ninja
rubygroup.vn
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=2031126297 | ||||||
Same first word
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DNS History
8 records (8 active, 0 former)
●NSns1.dkt.com.vn2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●NSns2.dkt.com.vn2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●MXalt1.aspmx.l.google.com2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●MXalt2.aspmx.l.google.com2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●MXalt3.aspmx.l.google.com2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●MXalt4.aspmx.l.google.com2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●MXaspmx.l.google.com2026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
●A171.244.49.1772026-08-17 → 2026-08-19 · 2 obs
● 2026-08-19 07:56:02
🔍 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 |
| rubygroup.vn | ns1.dkt.com.vn, ns2.dkt.com.vn | - |
✅ Authoritative Response
Server:112.213.89.3
NS records: ns1.dkt.com.vn, ns2.dkt.com.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rubygroup.vn (unsigned zone)
⏱️ Timing
Total: 2428ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 171.244.49.177 |
| NS | 2 | ns2.dkt.com.vn, ns1.dkt.com.vn |
| MX | 5 | alt4.aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 5)... |
| TXT | 2 | v=spf1 include:_spf.google.com ~all, v=spf1 a mx ~all |
| SOA | 1 | ns1.dkt.com.vn hostmaster.rubygroup.vn |
📌 Glue Records Collected
Total: 16
In-bailiwick: 16 (a.dns-servers.vn, a.dns-servers.vn, b.dns-servers.vn...)
Analysis
IP Addresses
rubygroup.vn resolves to just one IP address, 171.244.49.177.
Two other host names, along with uba.edu.vn, khachsanthieny.com and g-light.edu.vn, also share IP numbers with rubygroup.vn.
Name Servers
rubygroup.vn is delegated to two name servers: ns1.dkt.com.vn and ns2.dkt.com.vn.
rubygroup.vn shares its NS records with other domains, for example tasviet.vn, datrangtri.net.vn, vachngankgv.com and two others.
rubygroup.vn partially shares its NS delegation with several other domains, including van.vn, mpl.vn, thietbivesinhnhapkhau.com.vn and two others.
The name servers ns1.sapo.vn, ns2.sapo.vn, ns1.dotvndns.vn and two others are commonly seen in use alongside these name servers.
ns1.dkt.com.vn resolves to 112.213.89.3. ns2.dkt.com.vn resolves to 222.255.121.247. Both host names point to a single IP number.
Mail Servers
Mail for rubygroup.vn is handled by five mail servers, namely aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.
There is at least a partial MX overlap between rubygroup.vn and other domains, including quadvan.com, cogev.com, delfhome.com and two others.
alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.
Host names that have two IP addresses:
aspmx.l.google.com points to 172.253.122.26 and 2607:f8b0:4004:c27::1b.
alt1.aspmx.l.google.com points to 192.178.234.26 and 2800:3f0:4003:c14::1a.
alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1a.
alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1a.
alt4.aspmx.l.google.com points to 172.253.157.27 and 2a00:1450:400c:c23::1a.