🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`flexstack.co`

DNSSEC	🔒 Signed (DS record present)
A	2606:4700:3030::6815:4bf5^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3030::ac43:b80c^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.75.245^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.184.12^{🇺🇸 Cloudflare172.67.176.0/20 , 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:c07::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bc-in-f27.1e100.net`
		A	172.253.62.27^{🇺🇸 Google172.253.62.0/24}
			PTR	`bc-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	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.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	172.253.157.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f27.1e100.net`
TXT	`google-site-verification=mTwNc1AC_vQdn5661lAr-KJLqz_DExPRHmJEKvZQTBg`
TXT	`v=spf1 include:_spf.google.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.75.245, 172.67.184.12
		IPv6 hints	2606:4700:3030::6815:4bf5, 2606:4700:3030::ac43:b80c
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=244, name=cloudflare-ech.com
SOA	`noah.ns.cloudflare.com`dns@cloudflare.com serial=2414591967

`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=1759757067

Same first word

flexstack.co

flexstack.xyz

flexstack.org

flexstack.online

flexstack.nl

flexstack.io

flexstack.eu

flexstack.run

flexstack.tech

flexstack.app

flexstack.com

flexstack.ai

Similar names

stackflex.io

Previous names

Next names

DNS History

11 records (11 active, 0 former)

●NSnoah.ns.cloudflare.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●NSsara.ns.cloudflare.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●MXalt1.aspmx.l.google.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●MXalt2.aspmx.l.google.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●MXalt3.aspmx.l.google.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●MXalt4.aspmx.l.google.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●MXaspmx.l.google.com2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●A104.21.75.2452026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●A172.67.184.122026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●A2606:4700:3030::6815:4bf52026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

●A2606:4700:3030::ac43:b80c2026-09-11 → 2026-09-13 · 2 obs

● 2026-09-11 09:34:26
● 2026-09-13 14:30:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, c.registrydns.co, b.registrydns.co, d.registrydns.co	8 records
flexstack.co	noah.ns.cloudflare.com, sara.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.144

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

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1191ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.184.12, 104.21.75.245`
AAAA	2	`2606:4700:3030::6815:4bf5, 2606:4700:3030::ac43:b80c`
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=mTwNc1AC_vQdn56, 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 (a.registrydns.co, b.registrydns.co, c.registrydns.co...)

Analysis

IP Addresses

flexstack.co has four IP addresses: 104.21.75.245, 172.67.184.12, 2606:4700:3030::6815:4bf5 and 2606:4700:3030::ac43:b80c.

Two other host names, along with www.prescribepm.com.au, www.zolmirato.top and xinfc.net, also share IP numbers with flexstack.co.

Name Servers

The NS records for flexstack.co delegate to noah.ns.cloudflare.com and sara.ns.cloudflare.com.

flexstack.co shares its NS records with other domains, for example claw-dashboard-staging.pages.dev, carong.my.id, oldmacdonalds.co.nz and two others.

flexstack.co shares at least some of its name servers with other domains, including kompil.no, afiatsmartring.com, 6cfpg.com and two others.

These name servers are frequently paired with the name servers cass.ns.cloudflare.com and pam.ns.cloudflare.com.

DNS names with 6 IP addresses:

noah.ns.cloudflare.com maps to 108.162.193.133, 172.64.33.133, 173.245.59.133 and 3 additional IP addresses.

sara.ns.cloudflare.com maps to 108.162.192.144, 172.64.32.144, 173.245.58.144 and 3 additional IP addresses.

Mail Servers

Mail for flexstack.co is handled by five mail servers, namely 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.co and other domains, including naucitispanski.com, timovergauwen.com, letterhouse.co and two others.

alt4.aspmx.l.google.com, alt3.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:

The A records for aspmx.l.google.com return 172.253.62.27 and 2607:f8b0:4004:c07::1b.

The A records for alt1.aspmx.l.google.com return 192.178.234.26 and 2800:3f0:4003:c14::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1a.

The A records for alt4.aspmx.l.google.com return 172.253.157.27 and 2a00:1450:400c:c23::1b.