rstudys.com.br - robtex.com
rstudys.com.br
| DNSSEC | ⚠️ Not signed | ||||||
| A | 147.135.3.70🇺🇸 OVH147.135.0.0/17 Hosting route | ||||||
| PTR | ip70.ip-147-135-3.us | ||||||
| NS | ns1.hospedam.com ⭐ ⚠️ Not in parent delegation | ||||||
| A | 158.69.83.77🇨🇦 OVH158.69.0.0/16 Hosting route | ||||||
| PTR | ns1.hospedam.com | ||||||
| NS | ns1.rstudys.com.br ⚠️ Not in zone NS records | ||||||
| A | 158.69.83.77🇨🇦 OVH158.69.0.0/16 Hosting route | ||||||
| PTR | ns1.hospedam.com | ||||||
| NS | ns2.hospedam.com ⚠️ Not in parent delegation | ||||||
| A | 91.134.157.91🇫🇷 OVH91.134.0.0/16 | ||||||
| PTR | ns2.hospedam.com | ||||||
| NS | ns2.rstudys.com.br ⚠️ Not in zone NS records | ||||||
| A | 91.134.157.91🇫🇷 OVH91.134.0.0/16 | ||||||
| PTR | ns2.hospedam.com | ||||||
| NS | ns3.hospedam.com ⚠️ Not in parent delegation | ||||||
| A | 52.67.59.18🇧🇷 Amazon52.67.0.0/16 EC2 GRU prefix | ||||||
| PTR | ns3.hospedam.com | ||||||
| NS | ns3.rstudys.com.br ⚠️ Not in zone NS records | ||||||
| A | 52.67.59.18🇧🇷 Amazon52.67.0.0/16 EC2 GRU prefix | ||||||
| PTR | ns3.hospedam.com | ||||||
| NS | ns4.hospedam.com ⚠️ Not in parent delegation | ||||||
| A | 52.24.202.85🇺🇸 Amazon52.24.0.0/14 EC2 PDX prefix | ||||||
| PTR | ns4.hospedam.com | ||||||
| NS | ns4.rstudys.com.br ⚠️ Not in zone NS records | ||||||
| A | 52.24.202.85🇺🇸 Amazon52.24.0.0/14 EC2 PDX prefix | ||||||
| PTR | ns4.hospedam.com | ||||||
| MX | rstudys.com.br ⭐ | ||||||
| A | 147.135.3.70🇺🇸 OVH147.135.0.0/17 Hosting route | ||||||
| PTR | ip70.ip-147-135-3.us | ||||||
| TXT | v=spf1 +a +mx +ip4:15.204.220.37 include:relay.mailchannels.net +ip4:147.135.... | ||||||
| SOA | ns1.hospedam.comadmin@alphimedia.com 2026-01-31 #1 | ||||||
com.br
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.br ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.br ⚠️ Not in parent delegation | ||||||
| NS | c.dns.br ⚠️ Not in parent delegation | ||||||
| NS | d.dns.br ⚠️ Not in parent delegation | ||||||
| NS | e.dns.br ⚠️ Not in parent delegation | ||||||
| NS | f.dns.br ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.brhostmaster@registro.br serial=2026084530 | ||||||
rank #4158 in the tld
WOT: SAFE (69/100)
Subdomains
Same first word
Similar names
DNS History
14 records (10 active, 4 former)
●NSns1.hospedam.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
○NSns1.rstudys.com2015-07-06 → 2017-01-10 · 3 obs
● 2017-01-10 14:00:32
○ 2026-03-25 22:18:46
●NSns1.rstudys.com.br2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
●NSns2.hospedam.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
○NSns2.rstudys.com2015-07-06 → 2017-01-10 · 3 obs
● 2017-01-10 14:00:32
○ 2026-03-25 22:18:46
●NSns2.rstudys.com.br2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
●NSns3.hospedam.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
●NSns3.rstudys.com.br2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
●NSns4.hospedam.com2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
●NSns4.rstudys.com.br2026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
●MXrstudys.com.br2015-07-06 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
○A138.128.185.1952016-04-17 → 2017-01-10 · 4 obs
● 2016-04-17 17:12:22
● 2017-01-10 14:00:32
○ 2026-03-25 22:18:46
●A147.135.3.702026-03-25 → 2026-03-25 · 2 obs
● 2026-03-25 22:18:46
○A177.55.100.1802015-07-06 → 2016-02-02 · 4 obs
● 2016-02-02 18:52:30
○ 2016-04-17 17:12:22
○ 2026-03-25 22:18:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| br | a.dns.br, b.dns.br, c.dns.br, d.dns.br... | - |
| rstudys.com.br | ns1.rstudys.com.br, ns2.rstudys.com.br, ns3.rstudys.com.br, ns4.rstudys.com.br | 4 records |
✅ Authoritative Response
Server:52.67.59.18
NS records: ns1.rstudys.com.br, ns2.rstudys.com.br, ns3.rstudys.com.br, ns4.rstudys.com.br
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rstudys.com.br (unsigned zone)
⏱️ Timing
Total: 646ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 147.135.3.70 |
| NS | 4 | ns3.hospedam.com, ns2.hospedam.com... |
| MX | 1 | rstudys.com.br (pri: 0) |
| TXT | 1 | v=spf1 +a +mx +ip4:15.204.220.37 include |
| SOA | 1 | ns1.hospedam.com admin.alphimedia.com |
📌 Glue Records Collected
Total: 4
In-bailiwick: 4 (ns1.rstudys.com.br, ns2.rstudys.com.br, ns3.rstudys.com.br...)
Analysis
Hierarchy
rstudys.com.br is parent of ns3.rstudys.com.br, ns1.rstudys.com.br, ns2.rstudys.com.br and ns4.rstudys.com.br.
IP Addresses
rstudys.com.br points to a single IP address: 147.135.3.70.
Other host names, for instance emporioconstruir.com.br, iptvroku.com.br, gatozilla.com and pixelgo.com.br share IP numbers with rstudys.com.br.
Name Servers
rstudys.com.br delegates to eight name servers: ns1.hospedam.com, ns2.hospedam.com, ns3.hospedam.com, ns4.hospedam.com, ns1.rstudys.com.br, ns2.rstudys.com.br, ns3.rstudys.com.br and ns4.rstudys.com.br.
At least part of the name servers for rstudys.com.br are shared with other domains, for instance chevrolethallbh.com.br, proexito.srv.br, consulttel.com.br, januaria.org and alphimedia.com.
Hostnames sharing a single IP address:
ns1.hospedam.com points to 158.69.83.77
ns2.hospedam.com points to 91.134.157.91
ns3.hospedam.com points to 52.67.59.18
ns4.hospedam.com points to 52.24.202.85
ns1.rstudys.com.br points to 158.69.83.77
ns2.rstudys.com.br points to 91.134.157.91
ns3.rstudys.com.br points to 52.67.59.18
ns4.rstudys.com.br points to 52.24.202.85
IP addresses pointed to by multiple hostnames:
158.69.83.77 is pointed to by ns1.hospedam.com and ns1.rstudys.com.br
91.134.157.91 is pointed to by ns2.hospedam.com and ns2.rstudys.com.br
52.67.59.18 is pointed to by ns3.hospedam.com and ns3.rstudys.com.br
52.24.202.85 is pointed to by ns4.hospedam.com and ns4.rstudys.com.br
Mail Servers
Mail for rstudys.com.br is handled by a single mail server, rstudys.com.br.
Host rstudys.com.br points to IP 147.135.3.70.