🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`flexstack.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:451a^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3032::ac43:cb2e^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.69.26^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.203.46^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`noah.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b85^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c185^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`noah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2185^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`noah.ns.cloudflare.com`
		A	108.162.193.133^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
		A	172.64.33.133^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
		A	173.245.59.133^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`noah.ns.cloudflare.com`
NS	`sara.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a90^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c090^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sara.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2090^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sara.ns.cloudflare.com`
		A	108.162.192.144^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	172.64.32.144^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
		A	173.245.58.144^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sara.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c06::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bg-in-f26.1e100.net`
		A	142.251.16.26^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.27^{🇺🇸 Google192.178.0.0/15}
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.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::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=2ARrdqbBUZTrhEQWZpSSPuxnaFGXYO9viGhbpgl2JdE`
TXT	`v=spf1 include:_spf.google.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.69.26, 172.67.203.46
		IPv6 hints	2606:4700:3032::6815:451a, 2606:4700:3032::ac43:cb2e
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=127, name=cloudflare-ech.com
SOA	`noah.ns.cloudflare.com`dns@cloudflare.com serial=2413772998

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1789205387

Same first word

flexstack.run

flexstack.tech

flexstack.app

flexstack.com

flexstack.ai

flexstack.co

flexstack.xyz

flexstack.org

flexstack.online

flexstack.nl

flexstack.io

flexstack.eu

Similar names

stackflex.io

Previous names

Next names

flexstore.io

flexstud.io

flexstudy.io

flexsume.io

flexswap.io

flexsy.io

flextabs.io

flextag.io

flextalent.io

flextalk.io

flextask.io

flextech.io

flextechs.io

flextelligence.io

flexthings.io

flextime.io

flextimer.io

flextools.io

flextown.io

DNS History

11 records (11 active, 0 former)

●NSnoah.ns.cloudflare.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●NSsara.ns.cloudflare.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●MXalt1.aspmx.l.google.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●MXalt2.aspmx.l.google.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●MXalt3.aspmx.l.google.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●MXalt4.aspmx.l.google.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●MXaspmx.l.google.com2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●A104.21.69.262026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●A172.67.203.462026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●A2606:4700:3032::6815:451a2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

●A2606:4700:3032::ac43:cb2e2026-08-26 → 2026-09-12 · 2 obs

● 2026-08-26 10:25:42
● 2026-09-12 10:12:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	b0.nic.io, c0.nic.io, a0.nic.io, a2.nic.io	8 records
flexstack.io	sara.ns.cloudflare.com, noah.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.133

NS records: sara.ns.cloudflare.com, noah.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flexstack.io (unsigned zone)

⏱️ Timing

Total: 3559ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.203.46, 104.21.69.26`
AAAA	2	`2606:4700:3032::ac43:cb2e, 2606:4700:3032::6815:451a`
NS	2	`noah.ns.cloudflare.com, sara.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=2ARrdqbBUZTrhEQ, v=spf1 include:_spf.google.com -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`noah.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a0.nic.io, a2.nic.io, b0.nic.io...)

Analysis

IP Addresses

flexstack.io resolves to four IP addresses: 104.21.69.26, 172.67.203.46, 2606:4700:3032::6815:451a and 2606:4700:3032::ac43:cb2e.

Two other host names, along with 27g(0x736578)tou.com, mobilebet.buzz and fundflow.finance, also share IP numbers with flexstack.io.

Name Servers

DNS delegation for flexstack.io points to two name servers: noah.ns.cloudflare.com and sara.ns.cloudflare.com.

flexstack.io shares its NS records with other domains, for example gjerpenif.no, bildon.co.nz, quikkpay.com and two others.

flexstack.io has at least partial name server overlap with other domains, such as voyagebnb.com, zaidberg.uk, aldoshoes.com.ro and two others.

It is common to see these name servers used together with name servers theo.ns.cloudflare.com and maya.ns.cloudflare.com.

DNS names with 6 IP addresses:

noah.ns.cloudflare.com has IP addresses 108.162.193.133, 172.64.33.133 and 173.245.59.133, plus 3 other.

sara.ns.cloudflare.com has IP addresses 108.162.192.144, 172.64.32.144 and 173.245.58.144, plus 3 other.

Mail Servers

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

There is at least a partial MX overlap between flexstack.io and other domains, including simpletwistinc.com, keylimejewelry.com, jlgpottery.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

aspmx.l.google.com has two IP addresses: 142.251.16.26 and 2607:f8b0:4004:c06::1a.

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

alt2.aspmx.l.google.com has two IP addresses: 172.253.116.27 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com has two IP addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com has two IP addresses: 172.253.157.26 and 2a00:1450:400c:c23::1a.