firstclass.com.br - dns.ninja
firstclass.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=2026155004 | ||||||
rank #542911 globally
rank #4067 in the tld
WOT: SAFE (69/100)
Subdomains
Same first word
Similar names
DNS History
11 records (8 active, 3 former)
●NSns1.locaweb.com.br2015-05-21 → 2026-06-04 · 2 obs
● 2026-06-04 00:15:06
●NSns2.locaweb.com.br2015-05-21 → 2026-06-04 · 2 obs
● 2026-06-04 00:15:06
●NSns3.locaweb.com.br2015-05-21 → 2026-06-04 · 2 obs
● 2026-06-04 00:15:06
●MXmx.a.locaweb.com.br2015-05-21 → 2026-06-04 · 2 obs
● 2026-06-04 00:15:06
●MXmx.b.locaweb.com.br2015-05-21 → 2026-06-04 · 2 obs
● 2026-06-04 00:15:06
●MXmx.core.locaweb.com.br2026-02-16 → 2026-06-04 · 3 obs
● 2026-02-16 21:18:48
● 2026-06-04 00:15:06
●MXmx.jk.locaweb.com.br2015-05-21 → 2026-06-04 · 2 obs
● 2026-06-04 00:15:06
○A177.154.156.1192016-07-25 → 2017-08-05 · 5 obs
● 2016-07-25 11:56:46
● 2017-08-05 09:23:44
○ 2026-02-16 21:18:48
○ 2026-06-04 00:15:06
○A186.202.153.142015-10-27 → 2015-10-27 · 3 obs
○ 2016-01-14 14:17:24
○ 2026-06-04 00:15:06
○A186.202.153.1432016-01-14 → 2016-04-02 · 5 obs
● 2016-01-14 14:17:24
● 2016-04-02 20:22:04
○ 2016-07-25 11:56:46
○ 2026-06-04 00:15:06
●A52.8.174.2212026-02-16 → 2026-06-04 · 3 obs
● 2026-02-16 21:18:48
● 2026-06-04 00:15:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| br | d.dns.br, c.dns.br, f.dns.br, a.dns.br... | - |
| firstclass.com.br | ns1.locaweb.com.br, ns3.locaweb.com.br, ns2.locaweb.com.br | 6 records |
✅ Authoritative Response
Server:187.45.248.254
NS records: ns1.locaweb.com.br, ns3.locaweb.com.br, ns2.locaweb.com.br
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for firstclass.com.br (unsigned zone)
⏱️ Timing
Total: 1833ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 52.8.174.221 |
| NS | 3 | ns3.locaweb.com.br, ns1.locaweb.com.br... |
| MX | 4 | mx.jk.locaweb.com.br (pri: 20), mx.core.locaweb.com.br (pri: 10)... |
| TXT | 3 | google-site-verification=nOH7tFWLt9IQtqO, v=spf1 include:_spf.rdstation.com.br inc... |
| SOA | 1 | ns1.locaweb.com.br hostmaster.locaweb.co |
📌 Glue Records Collected
Total: 6
Out-of-bailiwick: 6 (ns3.locaweb.com.br, ns2.locaweb.com.br, ns1.locaweb.com.br...)
Analysis
Hierarchy
firstclass.com.br is the parent domain of e.firstclass.com.br and www.firstclass.com.br.
IP Addresses
firstclass.com.br points to a single IP number: 52.8.174.221.
Additional host names — velez.pe, jurunense.com, oggi.com.br and two others — share IP numbers with firstclass.com.br.
Name Servers
firstclass.com.br is delegated to three name servers: ns1.locaweb.com.br, ns2.locaweb.com.br and ns3.locaweb.com.br.
There is at least partial name server overlap between firstclass.com.br and other domains — casadasessenciaspoly.com.br, lpap.com.br, microsuporte.com.br and two more among them.
These name servers are routinely deployed together with the name servers ns4.locaweb.com.br.
ns1.locaweb.com.br, ns2.locaweb.com.br and ns3.locaweb.com.br each resolve to two IP addresses: ns1.locaweb.com.br resolves to 186.202.8.254 and 2804:218:7000:0:186:202:8:254; ns2.locaweb.com.br resolves to 187.45.248.254 and 2804:218:7001:0:187:45:248:254; ns3.locaweb.com.br resolves to 189.126.101.254 and 2804:218:7002:0:189:126:101:254.
Mail Servers
firstclass.com.br delegates incoming mail to 4 mail servers: mx.a.locaweb.com.br, mx.b.locaweb.com.br, mx.core.locaweb.com.br and mx.jk.locaweb.com.br.
firstclass.com.br shares mail servers — at least in part — with other domains, including imperioimoveis-rs.com.br, municipio.jaguariuna.sp.gov.br, mastercat.com.br and two others.
mx.a.locaweb.com.br, mx.b.locaweb.com.br, mx.core.locaweb.com.br and mx.jk.locaweb.com.br each resolve to one IP address: mx.a.locaweb.com.br resolves to 186.202.4.42, mx.b.locaweb.com.br resolves to 177.153.23.242, mx.core.locaweb.com.br resolves to 177.153.23.241 and mx.jk.locaweb.com.br resolves to 200.234.204.130.