certisul.com - dns.ninja

certisul.com

DNSSEC⚠️ Not signed
A177.38.225.253🇧🇷 AS28216177.38.224.0/23 CLARO S.A. Customer
PTRwebserver.virtualiza.com.br
NSns1.virtualiza.com.br ⭐
A45.164.92.141🇧🇷 AS26868545.164.92.0/24 DCV and Host One Network
NSns2.virtualiza.com.br
A45.164.92.142🇧🇷 AS26868545.164.92.0/24 DCV and Host One Network
MXcertisul.com ⭐
A177.38.225.253🇧🇷 AS28216177.38.224.0/23 CLARO S.A. Customer
PTRwebserver.virtualiza.com.br
TXTv=spf1 +a +mx +ip4:45.164.92.140 +ip4:45.164.92.141 +ip4:177.38.225.253 +incl...
SOAns1.virtualiza.com.brsystem@hradm.com 2026-07-20 #2

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785395872

MX for

certisul.com

Same first word

certisul.com.br
certisul.com

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DNS History

10 records (4 active, 6 former)

20162017201820192020202120222023202420252026NSns1.virtualiza.com.brns2.virtualiza.com.brns1.virtualserver.inf.brns2.virtualserver.inf.brns3.virtualiza.com.brns4.virtualiza.com.brMXcertisul.comA177.38.225.253189.113.163.1345.164.92.143
●NSns1.virtualiza.com.br2026-07-01 → 2026-07-30 · 3 obs
○ 2017-06-19 11:06:02
● 2026-07-01 13:37:54
● 2026-07-30 07:38:28
○NSns1.virtualserver.inf.br2015-05-21 → 2017-06-19 · 4 obs
● 2015-05-21 23:51:54
● 2017-06-19 11:06:02
○ 2026-07-01 13:37:54
○ 2026-07-30 07:38:28
●NSns2.virtualiza.com.br2026-07-01 → 2026-07-30 · 3 obs
○ 2017-06-19 11:06:02
● 2026-07-01 13:37:54
● 2026-07-30 07:38:28
○NSns2.virtualserver.inf.br2015-05-21 → 2017-06-19 · 4 obs
● 2015-05-21 23:51:54
● 2017-06-19 11:06:02
○ 2026-07-01 13:37:54
○ 2026-07-30 07:38:28
○NSns3.virtualiza.com.br2026-07-01 → 2026-07-01 · 4 obs
○ 2017-06-19 11:06:02
● 2026-07-01 13:37:54
○ 2026-07-21 03:59:00
○ 2026-07-30 07:38:28
○NSns4.virtualiza.com.br2026-07-01 → 2026-07-01 · 4 obs
○ 2017-06-19 11:06:02
● 2026-07-01 13:37:54
○ 2026-07-21 03:59:00
○ 2026-07-30 07:38:28
●MXcertisul.com2015-05-21 → 2026-07-30 · 2 obs
● 2015-05-21 23:51:54
● 2026-07-30 07:38:28
●A177.38.225.2532026-07-21 → 2026-07-30 · 3 obs
○ 2026-07-01 13:37:54
● 2026-07-21 03:59:00
● 2026-07-30 07:38:28
○A189.113.163.132015-05-21 → 2017-06-19 · 4 obs
● 2015-05-21 23:51:54
● 2017-06-19 11:06:02
○ 2026-07-01 13:37:54
○ 2026-07-30 07:38:28
○A45.164.92.1432026-07-01 → 2026-07-01 · 4 obs
○ 2017-06-19 11:06:02
● 2026-07-01 13:37:54
○ 2026-07-21 03:59:00
○ 2026-07-30 07:38:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comd.gtld-servers.net, k.gtld-servers.net, g.gtld-servers.net, e.gtld-servers.net...-
certisul.comns1.virtualiza.com.br, ns2.virtualiza.com.br-

✅ Authoritative Response

Server:45.164.92.142

NS records: ns1.virtualiza.com.br, ns2.virtualiza.com.br

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certisul.com (unsigned zone)

⏱️ Timing

Total: 4543ms | Queries: -

📄 Records

TypeCountSample Data
A1177.38.225.253
NS2ns1.virtualiza.com.br, ns2.virtualiza.com.br
MX1certisul.com (pri: 0)
TXT1v=spf1 +a +mx +ip4:45.164.92.140 +ip4:45
SOA1ns1.virtualiza.com.br system.hradm.com

Analysis

Mail Server Role

certisul.com handles its own mail, functioning as its own mail server.

IP Addresses

certisul.com resolves to just one IP address, 177.38.225.253.

Two other host names, along with mail.camaraforquilhinha.sc.gov.br, mail.sinop.mt.leg.br and mail.cmondaverde.sp.gov.br, also share IP numbers with certisul.com.

Name Servers

DNS delegation for certisul.com points to two name servers: ns1.virtualiza.com.br and ns2.virtualiza.com.br.

certisul.com uses the same name servers as other domains, for example alicecaetano.com.br and monsucre.net.

At least some of certisul.com's name servers are shared with other domains, for example bortoluzzicenter.com.br, globaliza.com.br, guido.org.br and two more.

These name servers are often deployed together with the name servers ns3.virtualiza.com.br, ns4.virtualiza.com.br, ns5.virtualiza.com.br and ns6.virtualiza.com.br.

Each of ns1.virtualiza.com.br and ns2.virtualiza.com.br has one IP address: ns1.virtualiza.com.br uses 45.164.92.141 and ns2.virtualiza.com.br uses 45.164.92.142.

Mail Servers

certisul.com is served by just one mail server: certisul.com.

certisul.com has exactly one IP number: 177.38.225.253.