checkstack.io - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

checkstack.io

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:bd64🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:414d🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.65.77Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.100🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgannon.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c3b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgannon.ns.cloudflare.com
A2803:f800:50::6ca2:c33b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgannon.ns.cloudflare.com
A2a06:98c1:50::ac40:233b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgannon.ns.cloudflare.com
A108.162.195.59🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgannon.ns.cloudflare.com
A162.159.44.59Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgannon.ns.cloudflare.com
A172.64.35.59🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgannon.ns.cloudflare.com
NSharleigh.ns.cloudflare.com
A2606:4700:50::a29f:263a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharleigh.ns.cloudflare.com
A2803:f800:50::6ca2:c23a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRharleigh.ns.cloudflare.com
A2a06:98c1:50::ac40:223a🇺🇸 Cloudflare2a06:98c1:50::/45
PTRharleigh.ns.cloudflare.com
A108.162.194.58🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharleigh.ns.cloudflare.com
A162.159.38.58Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharleigh.ns.cloudflare.com
A172.64.34.58🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRharleigh.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.65.77, 172.67.189.100
IPv6 hints2606:4700:3032::ac43:bd64, 2606:4700:3036::6815:414d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=95, name=cloudflare-ech.com
SOAgannon.ns.cloudflare.comdns@cloudflare.com serial=2410699584

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1789357536

Same first word

checkstack.app
checkstack.de
checkstack.ai
checkstack.io
checkstack.space
checkstack.dev
checkstack.co

Similar names

stackcheck.jp
stackcheck.so
stackcheck.workers.dev

Previous names

checks.io
checksammy.io
checksap.io
checkscan.io
checkseo.io
checkset.io
checksgpt.io
checkshop.io
checkshot.io
checkshout.io
checkshouts.io
checksig.io
checksigclear.io
checksite.io
checksocial.io
checkson.io
checksout.io
checkspeed.io
checkspot.io

Next names

checkstep.io
checksuite.io
checktag.io
checktech.io
checkthatcar.io
checkthevibe.io
checkthevin.io
checkthis.io
checkthisout.io
checktrezor.io
checktube.io
checktur.io
checktwice.io
checkuniverse.io
checkup.io
checkurl.io
checkus.io
checkvendors.io
checkverse.io

DNS History

6 records (6 active, 0 former)

NSgannon.ns.cloudflare.comharleigh.ns.cloudflare.comA104.21.65.77172.67.189.1002606:4700:3032::ac43:bd642606:4700:3036::6815:414d
●NSgannon.ns.cloudflare.com2026-08-31 → 2026-09-14 · 2 obs
● 2026-08-31 01:42:20
● 2026-09-14 04:07:24
●NSharleigh.ns.cloudflare.com2026-08-31 → 2026-09-14 · 2 obs
● 2026-08-31 01:42:20
● 2026-09-14 04:07:24
●A104.21.65.772026-08-31 → 2026-09-14 · 2 obs
● 2026-08-31 01:42:20
● 2026-09-14 04:07:24
●A172.67.189.1002026-08-31 → 2026-09-14 · 2 obs
● 2026-08-31 01:42:20
● 2026-09-14 04:07:24
●A2606:4700:3032::ac43:bd642026-08-31 → 2026-09-14 · 2 obs
● 2026-08-31 01:42:20
● 2026-09-14 04:07:24
●A2606:4700:3036::6815:414d2026-08-31 → 2026-09-14 · 2 obs
● 2026-08-31 01:42:20
● 2026-09-14 04:07:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa0.nic.io, c0.nic.io, b0.nic.io, a2.nic.io-
checkstack.ioharleigh.ns.cloudflare.com, gannon.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.59

NS records: harleigh.ns.cloudflare.com, gannon.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for checkstack.io (unsigned zone)

⏱️ Timing

Total: 732ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.65.77, 172.67.189.100
AAAA22606:4700:3036::6815:414d, 2606:4700:3032::ac43:bd64
NS2gannon.ns.cloudflare.com, harleigh.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1gannon.ns.cloudflare.com dns.cloudflare.

Analysis

IP Addresses

checkstack.io points to the four IP addresses 104.21.65.77, 172.67.189.100, 2606:4700:3032::ac43:bd64 and 2606:4700:3036::6815:414d.

tsoe9t.cn, thrill-casino.kiwi, uu88cskh.com plus two other host names have IP numbers in common with checkstack.io.

Name Servers

DNS delegation for checkstack.io points to two name servers: gannon.ns.cloudflare.com and harleigh.ns.cloudflare.com.

The name server configuration of checkstack.io is shared with other domains, for instance learnclaude.pro, homepage-d4a.pages.dev, hiexpress-rto-explorer.pages.dev and two others.

The name servers of checkstack.io overlap at least partially with those of other domains — among them desamarmi-fe.pages.dev, sugaringoasis.com, tkjdsb.com and two more.

The name servers ashley.ns.cloudflare.com, veronica.ns.cloudflare.com and ursula.ns.cloudflare.com are commonly seen alongside these name servers.

Hosts with 6 IP addresses each:

gannon.ns.cloudflare.com has IP addresses 108.162.195.59, 162.159.44.59 and 172.64.35.59, plus 3 other.

harleigh.ns.cloudflare.com has IP addresses 108.162.194.58, 162.159.38.58 and 172.64.34.58, plus 3 other.