estef.edu.br - robtex.com

estef.edu.br

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:3759🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:925e🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.55.89Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.146.94🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSelsa.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a6f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelsa.ns.cloudflare.com
A2803:f800:50::6ca2:c06f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRelsa.ns.cloudflare.com
A2a06:98c1:50::ac40:206f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRelsa.ns.cloudflare.com
A108.162.192.111🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelsa.ns.cloudflare.com
A172.64.32.111🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelsa.ns.cloudflare.com
A173.245.58.111🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelsa.ns.cloudflare.com
NSmark.ns.cloudflare.com
A2606:4700:58::adf5:3b82🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmark.ns.cloudflare.com
A2803:f800:50::6ca2:c182🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRmark.ns.cloudflare.com
A2a06:98c1:50::ac40:2182🇺🇸 Cloudflare2a06:98c1:50::/45
PTRmark.ns.cloudflare.com
A108.162.193.130🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmark.ns.cloudflare.com
A172.64.33.130🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmark.ns.cloudflare.com
A173.245.59.130🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRmark.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c08::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbi-in-f26.1e100.net
A172.253.63.26🇺🇸 Google172.253.63.0/24
PTRbi-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c14::1a🇨🇱 Google2800:3f0:4003::/48
A192.178.234.27🇺🇸 Google192.178.0.0/15
PTRncsclj-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c23::1b🇧🇪 Google2a00:1450:400c::/48
PTRyubrupd-in-f27.1e100.net
A172.253.157.26🇺🇸 Google172.253.0.0/16
PTRyubrupd-in-f26.1e100.net
TXTv=spf1 include:_spf.google.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.55.89, 172.67.146.94
IPv6 hints2606:4700:3032::6815:3759, 2606:4700:3033::ac43:925e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=36, name=cloudflare-ech.com
SOAelsa.ns.cloudflare.comdns@cloudflare.com serial=2411086952

edu.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=2026223108
WOT: SAFE (61/100)

Previously NS for

www.estef.edu.br
estef.edu.br

Subdomains

validador.estef.edu.br
www.estef.edu.br
ged.estef.edu.br
sagu.estef.edu.br
gnuteca.estef.edu.br
moodle.estef.edu.br
webmail.estef.edu.br

Same first word

estef.edu.br

Similar names

fetes.ch
feset.com
esetf.org
sefte.myshopify.com
feest.nl
stefe.nl
feest.org
efset.com
steef.org
steef.com
steef.net
tfees.us
feest.je
steef.nl
tfees.net
feets.net
feset.org
teefs.eu
fetse.nl
tesfe.com
tfees.myshopify.com
efest.ca
feest.email
tefes.sk
feset.cc
feste.com
fetes.org
stefe.sk
seetf.com
sefet.net
etfse.com
esfet.com
fetes.eu
feets.com
feste.de
setef.cl
stefe.de
fetes.com.au
feets.co
efset.dk
feets.ca
feets.se
fetes.co.uk
efest.cn
feest.be
fseet.com
efset.jp
feest.de
fetse.com
feets.info
tfsee.com
steef.de
feest.xyz
feste.com.br
feest.co
tesef.com
sefet.com
tfees.com
etfes.es
feets.es
feste.it
steef.be
eetfs.com
feste.org
efest.pl
efset.cn
feste.cc
seeft.com
steef.us
fetes.be
feest.gent
feets.me
sfeet.com
feest.com
efset.org
steef.ru
feset.cz

DNS History

21 records (11 active, 10 former)

20162017201820192020202120222023202420252026NSelsa.ns.cloudflare.commark.ns.cloudflare.comestef.edu.brns.estef.edu.brns2.estef.edu.brMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comA104.21.55.89172.67.146.942606:4700:3032::6815:37592606:4700:3033::ac43:925e192.185.223.1002606:4700:3036::6815:37592606:4700:3036::ac43:925e
●NSelsa.ns.cloudflare.com2026-04-24 → 2026-08-11 · 3 obs
○ 2017-07-30 02:27:32
● 2026-04-24 12:11:36
● 2026-08-11 05:06:14
○NSestef.edu.br2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
●NSmark.ns.cloudflare.com2026-04-24 → 2026-08-11 · 3 obs
○ 2017-07-30 02:27:32
● 2026-04-24 12:11:36
● 2026-08-11 05:06:14
○NSns.estef.edu.br2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
○NSns2.estef.edu.br2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
●MXalt1.aspmx.l.google.com2015-07-12 → 2026-08-11 · 2 obs
● 2015-07-12 20:53:22
● 2026-08-11 05:06:14
●MXalt2.aspmx.l.google.com2015-07-12 → 2026-08-11 · 2 obs
● 2015-07-12 20:53:22
● 2026-08-11 05:06:14
●MXalt3.aspmx.l.google.com2017-07-07 → 2026-08-11 · 3 obs
○ 2015-07-12 20:53:22
● 2017-07-07 06:30:02
● 2026-08-11 05:06:14
●MXalt4.aspmx.l.google.com2017-07-07 → 2026-08-11 · 3 obs
○ 2015-07-12 20:53:22
● 2017-07-07 06:30:02
● 2026-08-11 05:06:14
●MXaspmx.l.google.com2015-07-12 → 2026-08-11 · 2 obs
● 2015-07-12 20:53:22
● 2026-08-11 05:06:14
○MXaspmx2.googlemail.com2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
○MXaspmx3.googlemail.com2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
○MXaspmx4.googlemail.com2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
○MXaspmx5.googlemail.com2015-07-12 → 2017-07-30 · 4 obs
● 2015-07-12 20:53:22
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
●A104.21.55.892026-04-24 → 2026-08-11 · 3 obs
○ 2017-07-30 02:27:32
● 2026-04-24 12:11:36
● 2026-08-11 05:06:14
●A172.67.146.942026-04-24 → 2026-08-11 · 3 obs
○ 2017-07-30 02:27:32
● 2026-04-24 12:11:36
● 2026-08-11 05:06:14
○A192.185.223.1002015-11-12 → 2017-07-30 · 4 obs
● 2015-11-12 18:09:30
● 2017-07-30 02:27:32
○ 2026-04-24 12:11:36
○ 2026-08-11 05:06:14
●A2606:4700:3032::6815:37592026-07-03 → 2026-08-11 · 3 obs
○ 2026-06-02 06:23:30
● 2026-07-03 10:10:24
● 2026-08-11 05:06:14
●A2606:4700:3033::ac43:925e2026-07-03 → 2026-08-11 · 3 obs
○ 2026-06-02 06:23:30
● 2026-07-03 10:10:24
● 2026-08-11 05:06:14
○A2606:4700:3036::6815:37592026-04-24 → 2026-06-02 · 5 obs
○ 2017-07-30 02:27:32
● 2026-04-24 12:11:36
● 2026-06-02 06:23:30
○ 2026-07-03 10:10:24
○ 2026-08-11 05:06:14
○A2606:4700:3036::ac43:925e2026-04-24 → 2026-06-02 · 5 obs
○ 2017-07-30 02:27:32
● 2026-04-24 12:11:36
● 2026-06-02 06:23:30
○ 2026-07-03 10:10:24
○ 2026-08-11 05:06:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
bre.dns.br, a.dns.br, b.dns.br, c.dns.br...-
estef.edu.brelsa.ns.cloudflare.com, mark.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.130

NS records: elsa.ns.cloudflare.com, mark.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for estef.edu.br (unsigned zone)

⏱️ Timing

Total: 896ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.146.94, 104.21.55.89
AAAA22606:4700:3033::ac43:925e, 2606:4700:3032::6815:3759
NS2elsa.ns.cloudflare.com, mark.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT1v=spf1 include:_spf.google.com -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1elsa.ns.cloudflare.com dns.cloudflare.co

Analysis

Hierarchy

Among the subdomains of estef.edu.br are validador.estef.edu.br, www.estef.edu.br, ged.estef.edu.br, sagu.estef.edu.br, gnuteca.estef.edu.br and a few other host names.

IP Addresses

estef.edu.br points to the four IP addresses 104.21.55.89, 172.67.146.94, 2606:4700:3032::6815:3759 and 2606:4700:3033::ac43:925e.

Additional host names — forosilhouette.com, betweenthewires.org, jo.cupangjpmana.com and two others — share IP numbers with estef.edu.br.

Name Servers

Two name servers handle the delegation for estef.edu.br: elsa.ns.cloudflare.com and mark.ns.cloudflare.com.

estef.edu.br shares its name server setup with other domains, including ducgalru.id, fomhazne.id, vhlegal.ca and two others.

There is at least partial name server overlap between estef.edu.br and other domains — hokkaidoventures.com, waynecake.com, indiano(0x736578).com and two more among them.

These name servers are routinely deployed together with the name servers denver.ns.cloudflare.com.

Host names with 6 IP numbers:

elsa.ns.cloudflare.com resolves to 108.162.192.111, 172.64.32.111 and 173.245.58.111 among others, with 3 other IP addresses in total.

mark.ns.cloudflare.com resolves to 108.162.193.130, 172.64.33.130 and 173.245.59.130 among others, with 3 other IP addresses in total.

Mail Servers

estef.edu.br has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

estef.edu.br shares mail servers — at least in part — with other domains, including ns500671.ns500731.ns500754.ns500754.ns500742.ns500742.ns500704.ns500688.ns500704.ns500705.ns500678.ns500291.ns500291.ns500131.lustychickser.com, ns500754.ns500742.ns500742.ns500742.ns500731.ns500731.ns500688.ns500705.ns500678.ns500671.ns500671.lustychickser.com, bepamperedbyelaine.com and two others.

These mail servers are frequently paired with the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IP numbers:

aspmx.l.google.com resolves to two addresses: 172.253.63.26 and 2607:f8b0:4004:c08::1a.

alt1.aspmx.l.google.com resolves to two addresses: 192.178.234.27 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.26 and 2a00:1450:400c:c23::1b.