ctf.hackday.fr - robtex.com

ctf.hackday.fr

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:4a16🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c37c🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.74.22Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.195.124🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.74.22, 172.67.195.124
IPv62606:4700:3030::6815:4a16, 2606:4700:3035::ac43:c37c

hackday.fr

DNSSEC🔒 Signed (DS record present)
A2606:4700:3030::6815:4a16🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:c37c🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.74.22Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.195.124🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NScarmelo.ns.cloudflare.com ⭐
NStara.ns.cloudflare.com
MXmail-01.opengate.space ⭐
TXTgoogle-site-verification=X7X-FRwWBeYcBfehSrI6uKLvInkbiX3n7cj_HMcwTW0
TXTgoogle-site-verification=Zc2YJHcGl2Dn5R_LoON3ibiEOkZTCkUn36e50bqWTpg
TXTgoogle-site-verification=rwB9kW1Nt5TxajHHkqIxKp6JHzYuhjZnKeeE8DKZCrg
TXTv=spf1 include:_spf.opengate.space include:mx.ovh.com ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.74.22, 172.67.195.124
IPv62606:4700:3030::6815:4a16, 2606:4700:3035::ac43:c37c
SOAcarmelo.ns.cloudflare.comdns@cloudflare.com serial=2398935066

Same first word

ctf.fail
ctf.moscow
ctf.at
ctf.si
ctf.com.tw
ctf.bz
ctf.nu
ctf.com
ctf.solutions
ctf.info
ctf.ac.cn
ctf.institute
ctf.ch
ctf.vegas
ctf.co.nz
ctf.org.au
ctf.ee
ctf.cl
ctf.cc
ctf.eu
ctf.qa
ctf.net
ctf.site
ctf.horse
ctf.show
ctf.com.br
ctf.nl
ctf.co.in
ctf.zone
ctf.fi
ctf.pt
ctf.su
ctf.it
ctf.tv
ctf.or.kr
ctf.expert
ctf.life
ctf.ir
ctf.de
ctf.company
ctf.pl
ctf.co
ctf.uk.com
ctf.ma
ctf.fyi
ctf.pp.ua
ctf.org
ctf.watch
ctf.events
ctf.edu.tr
ctf.fr
ctf.ae
ctf.wa.gov.au
ctf.com.pt
ctf.biz
ctf.org.in
ctf.lu
ctf.be
ctf.no
ctf.land
ctf.cn
ctf.cz
ctf.com.cn
ctf.is
ctf.link
ctf.academy
ctf.center
ctf.hk
ctf.capital
ctf.co.jp
ctf.co.il
ctf.space
ctf.in
ctf.com.au
ctf.today
ctf.rocks
ctf.ca
ctf.es
ctf.com.ua
ctf.uz
ctf.school
ctf.me
ctf.wtf
ctf.network
ctf.com.tr
ctf.ru

Similar names

tcf.com.sg
cft.dk
tcf.church
ftc.in
tfc.eu.com
ftc.com.br
tfc.com.pk
tcf.ch
tfc.zp.ua
fct.com
ftc.cat
tfc.it
ftc.co.at
tfc.ac.nz
tcf.ru
fct.church
ftc.de
ftc.claims
cft.pl
tfc.mx
ftc.website
tfc.tv
ftc.kz
tcf.co.in
tfc.co
ftc.es
fct.i234.me
tfc.ie
ftc.uz
fct.com.cn
tcf.com.tw
cft.cw
tfc.agency
ftc.biz
cft.info
tcf.us
cft.re
ftc.cc
cft.ie
cft.de
fct.eu
cft.cz
tfc.es
tfc.net
ftc.ag
ftc.co.jp
fct.org.cn
tcf.org.hk
tcf.ca
tfc.ch
fct.ne.jp
ftc.be
cft.org.za
tcf.net.br
ftc.community
fct.sk
tfc.info
cft.me
fct.co
tfc.gr
tcf.no
tcf.org.uk
fct.ee
tcf.tv
fct.fr
fct.ru
ftc.ca
tfc.no
tcf.com
tcf.pl
ftc.ru
tfc.pt
fct.nl
ftc.me
fct.ca
ftc.su
tcf.to
fct.be
ftc.net.co
tfc.uk

DNS History

4 records (4 active, 0 former)

A104.21.74.22172.67.195.1242606:4700:3030::6815:4a162606:4700:3035::ac43:c37c
●A104.21.74.222026-03-15 → 2026-03-24 · 2 obs
● 2026-03-15 10:42:00
● 2026-03-24 02:33:14
●A172.67.195.1242026-03-15 → 2026-03-24 · 2 obs
● 2026-03-15 10:42:00
● 2026-03-24 02:33:14
●A2606:4700:3030::6815:4a162026-03-15 → 2026-03-24 · 2 obs
● 2026-03-15 10:42:00
● 2026-03-24 02:33:14
●A2606:4700:3035::ac43:c37c2026-03-15 → 2026-03-24 · 2 obs
● 2026-03-15 10:42:00
● 2026-03-24 02:33:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
frf.ext.nic.fr, d.nic.fr, g.ext.nic.fr-
hackday.frcarmelo.ns.cloudflare.com, tara.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.35.129

NS records: carmelo.ns.cloudflare.com, tara.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1166ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.74.22, 172.67.195.124
AAAA22606:4700:3035::ac43:c37c, 2606:4700:3030::6815:4a16
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

ctf.hackday.fr points to four IP numbers: 2606:4700:3030::6815:4a16, 2606:4700:3035::ac43:c37c, 104.21.74.22 and 172.67.195.124.

Other host names, for instance apeh.cn, js2.coffee, ctl.altarix.ru, coalichain.io and danyoung.org share IP numbers with ctf.hackday.fr.