qtu.com.br - robtex.com

qtu.com.br

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:3c58🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:c2fe🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.60.88Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.194.254🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSeric.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b70🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
A2803:f800:50::6ca2:c170🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTReric.ns.cloudflare.com
A2a06:98c1:50::ac40:2170🇺🇸 Cloudflare2a06:98c1:50::/45
PTReric.ns.cloudflare.com
A108.162.193.112🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
A172.64.33.112🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
A173.245.59.112🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
NSkristin.ns.cloudflare.com
A2606:4700:50::adf5:3ab5🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkristin.ns.cloudflare.com
A2803:f800:50::6ca2:c0b5🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkristin.ns.cloudflare.com
A2a06:98c1:50::ac40:20b5🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkristin.ns.cloudflare.com
A108.162.192.181🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkristin.ns.cloudflare.com
A172.64.32.181🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkristin.ns.cloudflare.com
A173.245.58.181🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkristin.ns.cloudflare.com
MXmx-br.spfbl.net ⭐
A2600:1f1e:4b3:bd00::8🇧🇷 Amazon2600:1f1e:400::/38 AMAZON AWS
PTRmx-br.spfbl.net
A52.67.41.212🇧🇷 Amazon52.67.0.0/16 EC2 GRU prefix
PTRmx-br.spfbl.net
MXmx-us.spfbl.net(10)
A2600:1f14:dfd:4401::8🇺🇸 Amazon2600:1f14:800::/37 AMAZON AWS
PTRmx-us.spfbl.net
A35.162.4.77🇺🇸 Amazon35.160.0.0/13 EC2 PDX prefix
PTRmx-us.spfbl.net
TXTgoogle-site-verification=DmGgQJGN8dH4e_ETRmm91GI35cYLbh6CDSjg9TU2HkQ
TXTv=spf1 include:_spf.sarosinc.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.60.88, 172.67.194.254
IPv6 hints2606:4700:3035::6815:3c58, 2606:4700:3037::ac43:c2fe
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=184, name=cloudflare-ech.com
SOAeric.ns.cloudflare.comdns@cloudflare.com serial=2409110214

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=2026198182
rank #524847 globally
rank #3892 in the tld
WOT: SAFE (69/100)

Same first word

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qtu.in
qtu.us
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DNS History

12 records (8 active, 4 former)

NSeric.ns.cloudflare.comkristin.ns.cloudflare.comMXmx-br.spfbl.netmx-us.spfbl.netA104.21.60.88172.67.194.2542606:4700:3035::6815:3c582606:4700:3037::ac43:c2fe188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSeric.ns.cloudflare.com2026-07-13 → 2026-07-17 · 2 obs
● 2026-07-13 10:09:56
● 2026-07-17 08:27:36
●NSkristin.ns.cloudflare.com2026-07-13 → 2026-07-17 · 2 obs
● 2026-07-13 10:09:56
● 2026-07-17 08:27:36
●MXmx-br.spfbl.net2026-07-13 → 2026-07-17 · 2 obs
● 2026-07-13 10:09:56
● 2026-07-17 08:27:36
●MXmx-us.spfbl.net2026-07-13 → 2026-07-17 · 2 obs
● 2026-07-13 10:09:56
● 2026-07-17 08:27:36
●A104.21.60.882026-07-17 → 2026-07-17 · 3 obs
○ 2026-07-13 10:09:56
● 2026-07-17 08:27:34
● 2026-07-17 08:27:36
●A172.67.194.2542026-07-17 → 2026-07-17 · 3 obs
○ 2026-07-13 10:09:56
● 2026-07-17 08:27:34
● 2026-07-17 08:27:36
○A188.114.96.02026-07-13 → 2026-07-13 · 3 obs
● 2026-07-13 10:09:56
○ 2026-07-17 08:27:34
○ 2026-07-17 08:27:36
○A188.114.97.02026-07-13 → 2026-07-13 · 3 obs
● 2026-07-13 10:09:56
○ 2026-07-17 08:27:34
○ 2026-07-17 08:27:36
●A2606:4700:3035::6815:3c582026-07-17 → 2026-07-17 · 3 obs
○ 2026-07-13 10:09:56
● 2026-07-17 08:27:34
● 2026-07-17 08:27:36
●A2606:4700:3037::ac43:c2fe2026-07-17 → 2026-07-17 · 3 obs
○ 2026-07-13 10:09:56
● 2026-07-17 08:27:34
● 2026-07-17 08:27:36
○A2a06:98c1:3120::2026-07-13 → 2026-07-13 · 3 obs
● 2026-07-13 10:09:56
○ 2026-07-17 08:27:34
○ 2026-07-17 08:27:36
○A2a06:98c1:3121::2026-07-13 → 2026-07-13 · 3 obs
● 2026-07-13 10:09:56
○ 2026-07-17 08:27:34
○ 2026-07-17 08:27:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
bre.dns.br, d.dns.br, a.dns.br, c.dns.br...-
qtu.com.breric.ns.cloudflare.com, kristin.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.181

NS records: eric.ns.cloudflare.com, kristin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1622ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.194.254, 104.21.60.88
AAAA22606:4700:3035::6815:3c58, 2606:4700:3037::ac43:c2fe
NS2eric.ns.cloudflare.com, kristin.ns.cloudflare.com
MX2mx-us.spfbl.net (pri: 10), mx-br.spfbl.net (pri: 5)
TXT2google-site-verification=DmGgQJGN8dH4e_E, v=spf1 include:_spf.sarosinc.com -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1eric.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

qtu.com.br resolves to four IP addresses: 104.21.60.88, 172.67.194.254, 2606:4700:3035::6815:3c58 and 2606:4700:3037::ac43:c2fe.

619westlake.com, fuzzbox.io, phim.fun and two other host names share IP numbers with qtu.com.br.

Name Servers

qtu.com.br is served by two delegated name servers, eric.ns.cloudflare.com and kristin.ns.cloudflare.com.

qtu.com.br uses the same name servers as several other domains — among them winpars.com, bixbit.tech, lisahost.com and two more.

qtu.com.br partially shares its NS delegation with several other domains, including diva-hotel.ru, aabl.in, tubepatrol.cc and two others.

These name servers often co-occur with the name servers anna.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

eric.ns.cloudflare.com carries IP addresses 108.162.193.112, 172.64.33.112 and 173.245.59.112, with 3 other addresses beyond those.

kristin.ns.cloudflare.com carries IP addresses 108.162.192.181, 172.64.32.181 and 173.245.58.181, with 3 other addresses beyond those.

Mail Servers

Mail for qtu.com.br is handled by two mail servers — mx-br.spfbl.net and mx-us.spfbl.net.

qtu.com.br uses an identical mail server configuration to several other domains — among them coplan.com.br, culturacasimiro.rj.gov.br, i7info.com.br and two more.

qtu.com.br has at least partial mail server overlap with other domains such as maismegaloja.com.br, cbainfo.com.br, sae.com.br and two more.

Each of the two host names carries two IP addresses: mx-br.spfbl.net points to 52.67.41.212 and 2600:1f1e:4b3:bd00::8, and mx-us.spfbl.net points to 35.162.4.77 and 2600:1f14:dfd:4401::8.