ptr-oil.com - robtex.com
ptr-oil.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns2.masterhost.ru ⭐ | ||||||
| A | 2a00:15f8:a000:12:1:1:2:53🇷🇺 MASTERHOST-AS2a00:15f8:a000::/48 | ||||||
| PTR | ns2.masterhost.ru | ||||||
| A | 90.156.133.161🇷🇺 MASTERHOST-AS90.156.128.0/20 | ||||||
| PTR | ns2.masterhost.ru | ||||||
| NS | ns.masterhost.ru | ||||||
| A | 2a00:15f8:a000:10:1:1:0:53🇷🇺 MASTERHOST-AS2a00:15f8:a000::/48 | ||||||
| PTR | ns.masterhost.ru | ||||||
| A | 90.156.136.116🇷🇺 MASTERHOST-AS90.156.128.0/20 | ||||||
| PTR | ns.masterhost.ru | ||||||
| NS | ns1.masterhost.ru | ||||||
| A | 2a00:15f8:a000:11:1:1:1:53🇷🇺 MASTERHOST-AS2a00:15f8:a000::/48 | ||||||
| PTR | ns1.masterhost.ru | ||||||
| A | 90.156.137.50🇷🇺 MASTERHOST-AS90.156.128.0/20 | ||||||
| PTR | ns1.masterhost.ru | ||||||
| MX | mail.diamondvalley.ru ⭐ | ||||||
| A | 83.220.163.69🇷🇺 LANTECH-AS83.220.160.0/22 LANTECH | ||||||
| PTR | mail.diamondvalley.ru | ||||||
| A | 195.210.147.166🇷🇺 MTS195.210.128.0/18 Mobile TeleSystems PJSC, Moscow division / former COMSTAR Telecommunications RUSSIA | ||||||
| PTR | mail.diamondvalley.ru | ||||||
| TXT | v=spf1 include:_spf.diamondvalley.ru -all | ||||||
| SOA | ns1.masterhost.ruhostmaster@masterhost.ru serial=1783939458 | ||||||
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=1784198997 | ||||||
Same first word
ptr-oil.com |
Similar names
DNS History
5 records (4 active, 1 former)
●NSns.masterhost.ru2016-12-20 → 2026-07-16 · 2 obs
● 2026-07-16 11:09:20
●NSns1.masterhost.ru2016-12-20 → 2026-07-16 · 2 obs
● 2026-07-16 11:09:20
●NSns2.masterhost.ru2016-12-20 → 2026-07-16 · 2 obs
● 2026-07-16 11:09:20
●MXmail.diamondvalley.ru2026-05-11 → 2026-07-16 · 3 obs
● 2026-05-11 15:24:24
● 2026-07-16 11:09:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| ptr-oil.com | ns1.masterhost.ru, ns.masterhost.ru, ns2.masterhost.ru | - |
✅ Authoritative Response
Server:90.156.136.116
NS records: ns1.masterhost.ru, ns.masterhost.ru, ns2.masterhost.ru
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ptr-oil.com (unsigned zone)
⏱️ Timing
Total: 931ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns1.masterhost.ru, ns2.masterhost.ru... |
| MX | 1 | mail.diamondvalley.ru (pri: 10) |
| TXT | 1 | v=spf1 include:_spf.diamondvalley.ru -al |
| SOA | 1 | ns1.masterhost.ru hostmaster.masterhost. |
Analysis
Name Servers
ptr-oil.com has three name servers — ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru.
ptr-oil.com partially shares its NS delegation with several other domains, including solfm.ru, vasrox.ru, confitrade.ru and two others.
Each of ns1.masterhost.ru, ns2.masterhost.ru and ns.masterhost.ru points to two IP numbers. ns1.masterhost.ru points to 90.156.137.50 and 2a00:15f8:a000:11:1:1:1:53. ns2.masterhost.ru points to 90.156.133.161 and 2a00:15f8:a000:12:1:1:2:53. ns.masterhost.ru points to 90.156.136.116 and 2a00:15f8:a000:10:1:1:0:53.
Mail Servers
ptr-oil.com uses one mail server — mail.diamondvalley.ru.
The mail server setup of ptr-oil.com matches that of other domains such as cyberdom.ru, ndtcompany.com, patero.ru and two others.
The host mail.diamondvalley.ru resolves to 83.220.163.69 and 195.210.147.166 — two IP addresses.