🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`stack3.co`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:984^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:a00c^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.9.132^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.160.12^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`jill.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a7a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c07a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jill.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:207a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jill.ns.cloudflare.com`
		A	108.162.192.122^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
		A	172.64.32.122^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
		A	173.245.58.122^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jill.ns.cloudflare.com`
NS	`karl.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bbe^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1be^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`karl.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21be^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`karl.ns.cloudflare.com`
		A	108.162.193.190^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
		A	172.64.33.190^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
		A	173.245.59.190^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`karl.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c0b::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bj-in-f27.1e100.net`
		A	142.250.31.27^{🇺🇸 Google142.250.31.0/24}
			PTR	`bj-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=ZUxs0JJfzWxE8P_GA3NsiFhsO6UwVRsTo5ORCgLHY1o`
TXT	`replit-verify=a0280f7f-99f9-4f28-9c70-519a62cefe77`
TXT	`v=spf1 include:_spf.google.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.9.132, 172.67.160.12
		IPv6 hints	2606:4700:3031::6815:984, 2606:4700:3035::ac43:a00c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=63, name=cloudflare-ech.com
SOA	`jill.ns.cloudflare.com`dns@cloudflare.com serial=2414013904

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759754548

Same first word

stack3.com

stack3.workers.dev

stack3.co

stack3.net

stack3.me

stack3.cyou

stack3.xyz

stack3.sbs

Similar names

k3scat.com

3stack.net

3stack.com

3stack.com.au

Previous names

Next names

DNS History

15 records (11 active, 4 former)

●NSjill.ns.cloudflare.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●NSkarl.ns.cloudflare.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●MXalt1.aspmx.l.google.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●MXalt2.aspmx.l.google.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●MXalt3.aspmx.l.google.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●MXalt4.aspmx.l.google.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●MXaspmx.l.google.com2026-09-05 → 2026-09-10 · 2 obs

● 2026-09-05 23:39:56
● 2026-09-10 09:55:18

●A104.21.9.1322026-09-06 → 2026-09-10 · 5 obs

○ 2026-09-05 23:39:56
● 2026-09-06 15:07:32
○ 2026-09-10 02:13:50
● 2026-09-10 09:55:14
● 2026-09-10 09:55:18

●A172.67.160.122026-09-06 → 2026-09-10 · 5 obs

○ 2026-09-05 23:39:56
● 2026-09-06 15:07:32
○ 2026-09-10 02:13:50
● 2026-09-10 09:55:14
● 2026-09-10 09:55:18

○A188.114.96.02026-09-05 → 2026-09-10 · 5 obs

● 2026-09-05 23:39:56
○ 2026-09-06 15:07:32
● 2026-09-10 02:13:50
○ 2026-09-10 09:55:14
○ 2026-09-10 09:55:18

○A188.114.97.02026-09-05 → 2026-09-10 · 5 obs

● 2026-09-05 23:39:56
○ 2026-09-06 15:07:32
● 2026-09-10 02:13:50
○ 2026-09-10 09:55:14
○ 2026-09-10 09:55:18

●A2606:4700:3031::6815:9842026-09-06 → 2026-09-10 · 5 obs

○ 2026-09-05 23:39:56
● 2026-09-06 15:07:32
○ 2026-09-10 02:13:50
● 2026-09-10 09:55:14
● 2026-09-10 09:55:18

●A2606:4700:3035::ac43:a00c2026-09-06 → 2026-09-10 · 5 obs

○ 2026-09-05 23:39:56
● 2026-09-06 15:07:32
○ 2026-09-10 02:13:50
● 2026-09-10 09:55:14
● 2026-09-10 09:55:18

○A2a06:98c1:3120::2026-09-05 → 2026-09-10 · 5 obs

● 2026-09-05 23:39:56
○ 2026-09-06 15:07:32
● 2026-09-10 02:13:50
○ 2026-09-10 09:55:14
○ 2026-09-10 09:55:18

○A2a06:98c1:3121::2026-09-05 → 2026-09-10 · 5 obs

● 2026-09-05 23:39:56
○ 2026-09-06 15:07:32
● 2026-09-10 02:13:50
○ 2026-09-10 09:55:14
○ 2026-09-10 09:55:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	d.registrydns.co, c.registrydns.co, a.registrydns.co, b.registrydns.co	-
stack3.co	jill.ns.cloudflare.com, karl.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.122

NS records: jill.ns.cloudflare.com, karl.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stack3.co (unsigned zone)

⏱️ Timing

Total: 551ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.160.12, 104.21.9.132`
AAAA	2	`2606:4700:3035::ac43:a00c, 2606:4700:3031::6815:984`
NS	2	`jill.ns.cloudflare.com, karl.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	3	`google-site-verification=ZUxs0JJfzWxE8P_, replit-verify=a0280f7f-99f9-4f28-9c70-51...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`jill.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

stack3.co resolves to four IP addresses: 104.21.9.132, 172.67.160.12, 2606:4700:3031::6815:984 and 2606:4700:3035::ac43:a00c.

Additional host names — aicservices.co.uk, lebanesemunicipalagenda.com, birkenheadphotographygroup.co.uk and two others — share IP numbers with stack3.co.

Name Servers

stack3.co is delegated to two name servers: jill.ns.cloudflare.com and karl.ns.cloudflare.com.

stack3.co shares its name server setup with other domains, including yokapay.icu, rutisir.icu, dedibiy.icu and two others.

stack3.co shares at least some of its name servers with other domains, including wt-test.workers.dev, e8s92x2ply6zprf3di7sgbh.workers.dev, c6zr3udr7w.workers.dev and two others.

These name servers are frequently paired with the name servers denver.ns.cloudflare.com and kami.ns.cloudflare.com.

Host names with 6 IP numbers:

jill.ns.cloudflare.com resolves to 108.162.192.122, 172.64.32.122, 173.245.58.122 and 3 other IP addresses.

karl.ns.cloudflare.com resolves to 108.162.193.190, 172.64.33.190, 173.245.59.190 and 3 other IP addresses.

Mail Servers

stack3.co is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

stack3.co shares mail servers — at least in part — with other domains, including dtyl.net, bastion.io, two-screen.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 points to 142.250.31.27 and 2607:f8b0:4004:c0b::1b.

alt1.aspmx.l.google.com points to 192.178.234.26 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.27 and 2a00:1450:4009:c0f::1b.

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

stack3.co - robtex.com

stack3.co

co

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`stack3.co`

`co`