certosign.com.br - robtex.com
certosign.com.br
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=2026175056 | ||||||
rank #4007 in the tld
WOT: SAFE (69/100)
Subdomains
app.certosign.com.br |
Same first word
certosign.com.br |
Similar names
DNS History
7 records (7 active, 0 former)
●NSisabel.ns.cloudflare.com2026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
●NSleif.ns.cloudflare.com2026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
●MXsmtp.google.com2026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
●A104.21.60.502026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
●A172.67.191.1662026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
●A2606:4700:3033::6815:3c322026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
●A2606:4700:3036::ac43:bfa62026-05-15 → 2026-06-24 · 2 obs
● 2026-06-24 02:46:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| br | d.dns.br, c.dns.br, f.dns.br, a.dns.br... | - |
| certosign.com.br | leif.ns.cloudflare.com, isabel.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.195.222
NS records: leif.ns.cloudflare.com, isabel.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for certosign.com.br (unsigned zone)
⏱️ Timing
Total: 629ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.191.166, 104.21.60.50 |
| AAAA | 2 | 2606:4700:3033::6815:3c32, 2606:4700:3036::ac43:bfa6 |
| NS | 2 | isabel.ns.cloudflare.com, leif.ns.cloudflare.com |
| MX | 1 | smtp.google.com (pri: 1) |
| TXT | 1 | google-site-verification=cmAJwC_0Vuk2jIW |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | isabel.ns.cloudflare.com dns.cloudflare. |
Analysis
Hierarchy
The domain app.certosign.com.br falls under the parent certosign.com.br.
IP Addresses
certosign.com.br points to the four IP addresses 104.21.60.50, 172.67.191.166, 2606:4700:3033::6815:3c32 and 2606:4700:3036::ac43:bfa6.
stampsjoann.net, oakvillerangers.ca, ukpetition.info plus two other host names have IP numbers in common with certosign.com.br.
Name Servers
certosign.com.br uses two name servers for its delegation: isabel.ns.cloudflare.com and leif.ns.cloudflare.com.
The name server configuration of certosign.com.br is shared with other domains, for instance allaboutchickens.info, primrose.co, openvideo.net and two others.
At least some of certosign.com.br's name servers are shared with other domains, for example srinivasrao.co.in, abqp3.cc, generic-drug.com and two more.
It is common for these name servers to be used in conjunction with the name servers dana.ns.cloudflare.com, laura.ns.cloudflare.com and toby.ns.cloudflare.com.
Hosts with 6 IP addresses each:
Hostname isabel.ns.cloudflare.com directs to 108.162.194.104, 162.159.38.104 and 172.64.34.104 along with 3 other IP addresses.
Hostname leif.ns.cloudflare.com directs to 108.162.195.222, 162.159.44.222 and 172.64.35.222 along with 3 other IP addresses.
Mail Servers
certosign.com.br uses one mail server — smtp.google.com.
The mail server setup of certosign.com.br matches that of other domains such as solobace.com, astronomoamador.com.br, sozolife.org and two others.
At least some of the mail servers used by certosign.com.br are shared with other domains: vaneet.in, escapp.in, chainco.net and two others among them.
It is common to find these mail servers paired with the mail servers aspmx.l.google.com, alt2.aspmx.l.google.com and alt1.aspmx.l.google.com, as well as two others.
smtp.google.com has 9 IP addresses: 142.251.163.26, 142.251.163.27, 142.251.167.26 plus 6 more.