ctronline.com.br - robtex.com

ctronline.com.br

DNSSEC⚠️ Not signed
A191.252.83.49🇧🇷 Locaweb191.252.80.0/22 Servicos de Internet SA
NSns1.locaweb.com.br ⭐
A2804:218:7000:0:186:202:8:254🇧🇷 Locaweb2804:218:7000::/48
A186.202.8.254🇧🇷 Locaweb186.202.8.0/24 Servicos de Internet SA
NSns2.locaweb.com.br
A2804:218:7001:0:187:45:248:254🇧🇷 Locaweb2804:218:7001::/48
A187.45.248.254🇧🇷 Locaweb187.45.248.0/24 Servicos de Internet SA
NSns3.locaweb.com.br
A2804:218:7002:0:189:126:101:254🇧🇷 Locaweb2804:218:7002::/48
A189.126.101.254🇧🇷 Locaweb189.126.101.0/24 Servicos de Internet SA
MXmx.core.locaweb.com.br ⭐
A177.153.23.241🇧🇷 Locaweb177.153.0.0/19 Servicos de Internet SA
PTRmx.core.locaweb.com.br
MXmx.a.locaweb.com.br(20)
A186.202.4.42🇧🇷 Locaweb186.202.0.0/19 Servicos de Internet SA
PTRmx.a.locaweb.com.br
MXmx.b.locaweb.com.br(20)
A177.153.23.242🇧🇷 Locaweb177.153.0.0/19 Servicos de Internet SA
PTRmx.b.locaweb.com.br
MXmx.jk.locaweb.com.br(20)
A200.234.204.130🇧🇷 Locaweb200.234.192.0/20 Servicos de Internet SA
PTRmx.jk.locaweb.com.br
TXTv=spf1 include:_spf.locaweb.com.br -all
SOAns1.locaweb.com.brhostmaster@locaweb.com.br 2022-06-08 #1

com.br

DNSSEC⚠️ Not signed
NSa.dns.br ⭐ ⚠️ Not in parent delegation
NSb.dns.br ⚠️ Not in parent delegation
NSc.dns.br ⚠️ Not in parent delegation
NSd.dns.br ⚠️ Not in parent delegation
NSe.dns.br ⚠️ Not in parent delegation
NSf.dns.br ⚠️ Not in parent delegation
SOAa.dns.brhostmaster@registro.br serial=2026210558
rank #525837 globally
rank #3777 in the tld
WOT: SAFE (69/100)

Same first word

ctronline.cn
ctronline.com.br
ctronline.com
ctronline.net

Similar names

tcronline.com
lectronin.com
clientron.cz
crtonline.com
neltronic.de
cernilton.co.uk
cernilton.org
cernilton.ru
trconline.org
clientron.net
lentronic.de
cernilton.com
crtonline.org
clientron.com
trconline.co.uk
rctonline.de
rtconline.net
clintreno.com
rencointl.com
cnlorient.com
clintonre.com
cnlorient.org
cernilton.eu
rtconline.com
lintoncre.com
lentronic.com
conilrent.de
trconline.com
rctonline.com
interclon.com
cernilton.biz
oncentril.com
clientron.ru

DNS History

11 records (8 active, 3 former)

20162017201820192020202120222023202420252026NSns1.locaweb.com.brns2.locaweb.com.brns3.locaweb.com.brhm23MXmx.a.locaweb.com.brmx.b.locaweb.com.brmx.core.locaweb.com.brmx.jk.locaweb.com.brA191.252.83.49191.252.46.9200.234.196.239
○NShm232015-04-27 → 2017-04-05 · 4 obs
● 2015-04-27 00:15:16
● 2017-04-05 10:33:54
○ 2026-06-30 16:53:32
○ 2026-07-30 00:09:08
●NSns1.locaweb.com.br2015-04-27 → 2026-07-30 · 2 obs
● 2015-04-27 00:15:16
● 2026-07-30 00:09:08
●NSns2.locaweb.com.br2015-04-27 → 2026-07-30 · 2 obs
● 2015-04-27 00:15:16
● 2026-07-30 00:09:08
●NSns3.locaweb.com.br2015-04-27 → 2026-07-30 · 2 obs
● 2015-04-27 00:15:16
● 2026-07-30 00:09:08
●MXmx.a.locaweb.com.br2015-04-27 → 2026-07-30 · 2 obs
● 2015-04-27 00:15:16
● 2026-07-30 00:09:08
●MXmx.b.locaweb.com.br2015-04-27 → 2026-07-30 · 2 obs
● 2015-04-27 00:15:16
● 2026-07-30 00:09:08
●MXmx.core.locaweb.com.br2026-06-30 → 2026-07-30 · 3 obs
○ 2015-04-27 00:15:16
● 2026-06-30 16:53:32
● 2026-07-30 00:09:08
●MXmx.jk.locaweb.com.br2015-04-27 → 2026-07-30 · 2 obs
● 2015-04-27 00:15:16
● 2026-07-30 00:09:08
○A191.252.46.92015-10-11 → 2017-04-05 · 5 obs
○ 2015-04-27 00:15:16
● 2015-10-11 04:36:56
● 2017-04-05 10:33:54
○ 2026-06-30 16:53:32
○ 2026-07-30 00:09:08
●A191.252.83.492026-06-30 → 2026-07-30 · 3 obs
○ 2017-04-05 10:33:54
● 2026-06-30 16:53:32
● 2026-07-30 00:09:08
○A200.234.196.2392015-04-27 → 2015-04-27 · 3 obs
● 2015-04-27 00:15:16
○ 2015-10-11 04:36:56
○ 2026-07-30 00:09:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
bre.dns.br, d.dns.br, a.dns.br, c.dns.br...-
ctronline.com.brns1.locaweb.com.br, ns3.locaweb.com.br, ns2.locaweb.com.br6 records

✅ Authoritative Response

Server:186.202.8.254

NS records: ns1.locaweb.com.br, ns3.locaweb.com.br, ns2.locaweb.com.br

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctronline.com.br (unsigned zone)

⏱️ Timing

Total: 569ms | Queries: -

📄 Records

TypeCountSample Data
A1191.252.83.49
NS3NS3.locaweb.com.br, ns2.locaweb.com.br...
MX4mx.a.locaweb.com.br (pri: 20), mx.b.locaweb.com.br (pri: 20)...
TXT1v=spf1 include:_spf.locaweb.com.br -all
SOA1ns1.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

IP Addresses

ctronline.com.br resolves to one IP address: 191.252.83.49.

tdtec.com.br, zeroarts.com.br, portalfenix.com.br and two other host names share IP numbers with ctronline.com.br.

Name Servers

The authoritative name servers for ctronline.com.br are ns1.locaweb.com.br, ns2.locaweb.com.br and ns3.locaweb.com.br — three in total.

ctronline.com.br partially shares its NS delegation with several other domains, including lifree.com.br, midmix.com.br, krattos.com.br and two others.

ns1.locaweb.com.br, ns2.locaweb.com.br and ns3.locaweb.com.br all resolve to exactly two IP numbers apiece: ns1.locaweb.com.br → 186.202.8.254 and 2804:218:7000:0:186:202:8:254; ns2.locaweb.com.br → 187.45.248.254 and 2804:218:7001:0:187:45:248:254; ns3.locaweb.com.br → 189.126.101.254 and 2804:218:7002:0:189:126:101:254.

Mail Servers

ctronline.com.br has four mail servers: mx.a.locaweb.com.br, mx.b.locaweb.com.br, mx.core.locaweb.com.br and mx.jk.locaweb.com.br.

ctronline.com.br has at least partial mail server overlap with other domains such as hairshine.com.br, konno.med.br, performamais.com.br and two more.

Each of the four hosts mx.a.locaweb.com.br, mx.b.locaweb.com.br, mx.core.locaweb.com.br and mx.jk.locaweb.com.br points to a single IP address — mx.a.locaweb.com.br points to 186.202.4.42, mx.b.locaweb.com.br points to 177.153.23.242, mx.core.locaweb.com.br points to 177.153.23.241 and mx.jk.locaweb.com.br points to 200.234.204.130.