mathtech.com.br - dns.ninja
mathtech.com.br
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 199.73.30.106🇺🇸 ANTIETAM199.73.28.0/22 | ||||||
| PTR | dyn-199.73.30-106.myactv.net | ||||||
| NS | e.sec.dns.br ⭐ | ||||||
| A | 2001:12f8:b:1::14🇧🇷 C-DNS-BR2001:12f8:b::/48 Registro.BR Network (C.DNS.BR) | ||||||
| PTR | e.sec.dns.br | ||||||
| A | 200.192.232.14🇧🇷 C-DNS-BR200.192.232.0/24 Registro.BR Network (C.DNS.BR) | ||||||
| PTR | e.sec.dns.br | ||||||
| NS | f.sec.dns.br | ||||||
| A | 2001:12f8:9:1::14🇧🇷 B-DNS-BR2001:12f8:9::/48 Registro.BR Network (B.DNS.BR) | ||||||
| PTR | f.sec.dns.br | ||||||
| A | 200.189.40.14🇧🇷 B-DNS-BR200.189.40.0/24 Registro.BR Network (B.DNS.BR) | ||||||
| PTR | f.sec.dns.br | ||||||
| MX | smtp.rotasurbanas.com.br ⭐ | ||||||
| SOA | e.sec.dns.brhostmaster@registro.br serial=2026169000 | ||||||
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=2026176224 | ||||||
rank #4007 in the tld
WOT: SAFE (69/100)
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSe.sec.dns.br2015-07-12 → 2026-06-25 · 2 obs
● 2026-06-25 09:55:46
●NSf.sec.dns.br2015-07-12 → 2026-06-25 · 2 obs
● 2026-06-25 09:55:46
●MXsmtp.rotasurbanas.com.br2015-07-12 → 2026-06-25 · 2 obs
● 2026-06-25 09:55:46
●A199.73.30.1062015-07-12 → 2026-06-25 · 2 obs
● 2026-06-25 09:55:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| br | a.dns.br, b.dns.br, c.dns.br, d.dns.br... | - |
| mathtech.com.br | e.sec.dns.br, f.sec.dns.br | - |
✅ Authoritative Response
Server:200.189.40.14
NS records: e.sec.dns.br, f.sec.dns.br
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2234ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 199.73.30.106 |
| NS | 2 | e.sec.dns.br, f.sec.dns.br |
| MX | 1 | smtp.rotasurbanas.com.br (pri: 5) |
| SOA | 1 | e.sec.dns.br hostmaster.registro.br |
Analysis
IP Addresses
mathtech.com.br has exactly one IP address — 199.73.30.106.
Name Servers
mathtech.com.br uses two name servers for its delegation: e.sec.dns.br and f.sec.dns.br.
The name server configuration of mathtech.com.br is shared with other domains, for instance speedytelecom.net.br, retimar.com.br, nextcomputer.com.br and two others.
At least some of mathtech.com.br's name servers are shared with other domains, for example frgg.com.br, bcharts.com.br, portalnfe.com.br and two more.
These name servers tend to be used in conjunction with the name servers d.sec.dns.br.
The two host names e.sec.dns.br and f.sec.dns.br each have a pair of IP addresses: e.sec.dns.br has 200.192.232.14 and 2001:12f8:b:1::14, and f.sec.dns.br has 200.189.40.14 and 2001:12f8:9:1::14.
Mail Servers
mathtech.com.br uses one mail server — smtp.rotasurbanas.com.br.