stackcat.io - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

stackcat.io

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:10f🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:97d8🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.1.15Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.151.216🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSleonard.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c36🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
A2803:f800:50::6ca2:c336🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRleonard.ns.cloudflare.com
A2a06:98c1:50::ac40:2336🇺🇸 Cloudflare2a06:98c1:50::/45
PTRleonard.ns.cloudflare.com
A108.162.195.54🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
A162.159.44.54Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
A172.64.35.54🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
NSsusan.ns.cloudflare.com
A2606:4700:50::a29f:26c7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
A2803:f800:50::6ca2:c2c7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsusan.ns.cloudflare.com
A2a06:98c1:50::ac40:22c7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsusan.ns.cloudflare.com
A108.162.194.199🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
A162.159.38.199Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
A172.64.34.199🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.1.15, 172.67.151.216
IPv6 hints2606:4700:3032::6815:10f, 2606:4700:3035::ac43:97d8
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=92, name=cloudflare-ech.com
SOAleonard.ns.cloudflare.comdns@cloudflare.com serial=2409256145

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1787680875

Same first word

stackcat.io

Similar names

stackact.com

Previous names

stackabl.io
stackable.io
stackablelabs.io
stackables.io
stackadvisory.io
stackaero.io
stackahoy.io
stackalytics.io
stackandflow.io
stackart.io
stackatlas.io
stackato.io
stackav.io
stackbase.io
stackbases.io
stackbe.io
stackbeam.io
stackblitz.io
stackbooster.io
stackbright.io

Next names

stackcdn.io
stackcode.io
stackcommerce.io
stackconsole.io
stackcorp.io
stackd.io
stackdapps.io
stackdata.io
stackdepth.io
stackdev.io
stackdocs.io
stackdome.io
stackdraft.io
stackedcoaching.io
stackedit.io
stackeditpro.io
stackedplatform.io
stackera.io
stackers.io
stackery.io

DNS History

6 records (6 active, 0 former)

NSleonard.ns.cloudflare.comsusan.ns.cloudflare.comA104.21.1.15172.67.151.2162606:4700:3032::6815:10f2606:4700:3035::ac43:97d8
●NSleonard.ns.cloudflare.com2026-07-14 → 2026-08-25 · 2 obs
● 2026-07-14 06:30:54
● 2026-08-25 19:10:14
●NSsusan.ns.cloudflare.com2026-07-14 → 2026-08-25 · 2 obs
● 2026-07-14 06:30:54
● 2026-08-25 19:10:14
●A104.21.1.152026-07-14 → 2026-08-25 · 2 obs
● 2026-07-14 06:30:54
● 2026-08-25 19:10:14
●A172.67.151.2162026-07-14 → 2026-08-25 · 2 obs
● 2026-07-14 06:30:54
● 2026-08-25 19:10:14
●A2606:4700:3032::6815:10f2026-07-14 → 2026-08-25 · 2 obs
● 2026-07-14 06:30:54
● 2026-08-25 19:10:14
●A2606:4700:3035::ac43:97d82026-07-14 → 2026-08-25 · 2 obs
● 2026-07-14 06:30:54
● 2026-08-25 19:10:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, a0.nic.io, a2.nic.io, b0.nic.io-
stackcat.iosusan.ns.cloudflare.com, leonard.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.199

NS records: susan.ns.cloudflare.com, leonard.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackcat.io (unsigned zone)

⏱️ Timing

Total: 2226ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.151.216, 104.21.1.15
AAAA22606:4700:3032::6815:10f, 2606:4700:3035::ac43:97d8
NS2leonard.ns.cloudflare.com, susan.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1leonard.ns.cloudflare.com dns.cloudflare

Analysis

IP Addresses

stackcat.io directs to four IP numbers, which are 104.21.1.15, 172.67.151.216, 2606:4700:3032::6815:10f and 2606:4700:3035::ac43:97d8.

cf6405d4829a.claretiano.edu.co, audio.pci.api.br, cf6405d4829a.cf6405d4829a.cf6405d4829a.cf6405d4829a.cf6405d4829a.cf6405d4829a.claretiano.edu.co plus two other host names have IP numbers in common with stackcat.io.

Name Servers

stackcat.io is served by two delegated name servers, leonard.ns.cloudflare.com and susan.ns.cloudflare.com.

The name server configuration of stackcat.io is shared with other domains, for instance svadebka.nl, 010.news, uk88.krd and two others.

There is at least partial name server overlap between stackcat.io and other domains — juliemorrisonforstatesenate.com, juniorjunco.com.co, puc3lnv.pages.dev and two more among them.

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

Hosts with 6 IP addresses each:

leonard.ns.cloudflare.com carries IP addresses 108.162.195.54, 162.159.44.54 and 172.64.35.54, with 3 other addresses beyond those.

susan.ns.cloudflare.com carries IP addresses 108.162.194.199, 162.159.38.199 and 172.64.34.199, with 3 other addresses beyond those.