systemfree.ru - robtex.com
systemfree.ru
| DNSSEC | ⚠️ Not signed | ||||||
| A | 51.91.77.210🇫🇷 OVH51.91.0.0/16 | ||||||
| PTR | vps-7b976e4d.vps.ovh.net | ||||||
| NS | ns01.special-ultra-dns.com ⭐ | ||||||
| A | 185.56.162.173🇳🇱 SELECTEL-MSK185.56.162.0/24 | ||||||
| PTR | special-ultra-dns.com | ||||||
| NS | ns1.special-ultra-dns.com ⚠️ Not in zone NS records | ||||||
| A | 185.56.162.173🇳🇱 SELECTEL-MSK185.56.162.0/24 | ||||||
| PTR | special-ultra-dns.com | ||||||
| NS | ns2.special-ultra-dns.com ⚠️ Not in zone NS records | ||||||
| A | 185.56.162.173🇳🇱 SELECTEL-MSK185.56.162.0/24 | ||||||
| PTR | special-ultra-dns.com | ||||||
| MX | mx.systemfree.ru ⭐ | ||||||
| A | 51.91.77.210🇫🇷 OVH51.91.0.0/16 | ||||||
| PTR | vps-7b976e4d.vps.ovh.net | ||||||
| TXT | v=spf1 a mx ip4:51.91.77.210 ~all | ||||||
| SOA | ns01.special-ultra-dns.comhostmaster@systemfree.ru 2026-03-07 #4 | ||||||
ru
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.ripn.net ⭐ | ||||||
| NS | b.dns.ripn.net | ||||||
| NS | d.dns.ripn.net | ||||||
| NS | e.dns.ripn.net | ||||||
| NS | f.dns.ripn.net | ||||||
| SOA | a.dns.ripn.nethostmaster@ripn.net serial=4068147 | ||||||
Subdomains
mx.systemfree.ru |
Same first word
systemfree.blogspot.com |
systemfree.ru |
systemfree.com |
Similar names
freesystem.net |
freesystem.org |
freesystem.hu |
freesystem.de |
reefsystem.com |
freesystem.com |
freesystem.jp |
freesystem.dk |
esmesyfret.com |
DNS History
12 records (5 active, 7 former)
●NSns01.special-ultra-dns.com2026-03-19 → 2026-03-20 · 3 obs
● 2026-03-19 03:14:56
● 2026-03-20 08:36:10
○NSns1.agava.net.ru2015-05-13 → 2016-07-09 · 4 obs
● 2016-07-09 20:51:40
○ 2017-02-16 12:08:22
○ 2026-03-20 08:36:10
○NSns1.reg.ru2017-02-16 → 2017-02-16 · 4 obs
● 2017-02-16 12:08:22
○ 2026-03-19 03:14:56
○ 2026-03-20 08:36:10
●NSns1.special-ultra-dns.com2026-03-19 → 2026-03-20 · 3 obs
● 2026-03-19 03:14:56
● 2026-03-20 08:36:10
○NSns2.agava.net.ru2015-05-13 → 2016-07-09 · 4 obs
● 2016-07-09 20:51:40
○ 2017-02-16 12:08:22
○ 2026-03-20 08:36:10
○NSns2.reg.ru2017-02-16 → 2017-02-16 · 4 obs
● 2017-02-16 12:08:22
○ 2026-03-19 03:14:56
○ 2026-03-20 08:36:10
●NSns2.special-ultra-dns.com2026-03-19 → 2026-03-20 · 3 obs
● 2026-03-19 03:14:56
● 2026-03-20 08:36:10
○MXcluster.relay.agava.net2015-05-13 → 2016-07-09 · 4 obs
● 2016-07-09 20:51:40
○ 2026-03-19 03:14:56
○ 2026-03-20 08:36:10
●MXmx.systemfree.ru2026-03-19 → 2026-03-20 · 3 obs
● 2026-03-19 03:14:56
● 2026-03-20 08:36:10
○A2a03:4900:0:6037:80:78:250:262015-05-13 → 2017-02-16 · 4 obs
● 2017-02-16 12:08:22
○ 2026-03-19 03:14:56
○ 2026-03-20 08:36:10
●A51.91.77.2102026-03-19 → 2026-03-20 · 3 obs
● 2026-03-19 03:14:56
● 2026-03-20 08:36:10
○A80.78.250.262015-05-13 → 2016-07-09 · 4 obs
● 2016-07-09 20:51:40
○ 2026-03-19 03:14:56
○ 2026-03-20 08:36:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| ru | a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net... | - |
| systemfree.ru | ns1.special-ultra-dns.com, ns2.special-ultra-dns.com | - |
✅ Authoritative Response
Server: 185.56.162.173
NS records: ns1.special-ultra-dns.com, ns2.special-ultra-dns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for systemfree.ru (unsigned zone)
⏱️ Timing
Total: 963ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 51.91.77.210 |
| MX | 1 | mx.systemfree.ru (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:51.91.77.210 ~all |
| SOA | 1 | ns01.special-ultra-dns.com hostmaster.sy |
Analysis
Hierarchy
The parent of mx.systemfree.ru is systemfree.ru.
IP Addresses
systemfree.ru points to a single IP: 51.91.77.210.
Other host names, such as mx.systemfree.ru, share IP numbers with systemfree.ru.
Name Servers
systemfree.ru is delegated to three name servers: ns01.special-ultra-dns.com, ns1.special-ultra-dns.com and ns2.special-ultra-dns.com.
systemfree.ru partially shares name servers with other domains; examples include xn--c1ajncdddm1ah2b.xn--p1ai, sourcebest.ru, xn--90ahbybenq1ah1g.xn--p1ai, docview.ru and quantpoint.ru.
Host names with one IP:
ns01.special-ultra-dns.com points to: 185.56.162.173.
ns1.special-ultra-dns.com points to: 185.56.162.173.
ns2.special-ultra-dns.com points to: 185.56.162.173.
Host names that point to 185.56.162.173: ns01.special-ultra-dns.com, ns1.special-ultra-dns.com and ns2.special-ultra-dns.com.
Mail Servers
systemfree.ru is handled by a single mail server, mx.systemfree.ru.
mx.systemfree.ru points to a single IP: 51.91.77.210.