🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`thinkstack.help`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:a6c5^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:530d^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.83.13^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.166.197^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`donna.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a97^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`donna.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c097^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`donna.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2097^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`donna.ns.cloudflare.com`
		A	108.162.192.151^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`donna.ns.cloudflare.com`
		A	172.64.32.151^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`donna.ns.cloudflare.com`
		A	173.245.58.151^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`donna.ns.cloudflare.com`
NS	`marek.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bca^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1ca^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`marek.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21ca^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`marek.ns.cloudflare.com`
		A	108.162.193.202^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
		A	172.64.33.202^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
		A	173.245.59.202^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`marek.ns.cloudflare.com`
MX	`thinkstack-help.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c918::5^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-byapr05cu00805.inbound.protection.outlook.com`
		A	2a01:111:f403:c927::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn8pr05cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:f805::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-co1pr03cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:f908::2^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn8pr05cu00102.inbound.protection.outlook.com`
		A	40.93.192.4^{🇺🇸 Microsoft40.80.0.0/12}
			PTR	`mail-dm2pr04cu00404.inbound.protection.outlook.com`
		A	52.101.41.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00204.inbound.protection.outlook.com`
		A	52.101.60.182^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-bn3pr0301cu00206.inbound.protection.outlook.com`
		A	52.101.194.17^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-ch5pr02cu00401.inbound.protection.outlook.com`
TXT	`MS=ms58123048`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.83.13, 172.67.166.197
		IPv6 hints	2606:4700:3030::ac43:a6c5, 2606:4700:3031::6815:530d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=118, name=cloudflare-ech.com
SOA	`donna.ns.cloudflare.com`dns@cloudflare.com serial=2414139994

`help`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.nic.help`
	NS	`b.nic.help`
	NS	`c.nic.help`
	NS	`d.nic.help`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1789597019

⚠️ On DNS blocklist: spam-tlds

Same first word

Similar names

stackthink.com

stackthink.xyz

Previous names

Next names

DNS History

11 records (7 active, 4 former)

●NSdonna.ns.cloudflare.com2026-09-13 → 2026-09-16 · 2 obs

● 2026-09-13 21:22:04
● 2026-09-16 22:23:32

●NSmarek.ns.cloudflare.com2026-09-13 → 2026-09-16 · 2 obs

● 2026-09-13 21:22:04
● 2026-09-16 22:23:32

●MXthinkstack-help.mail.protection.outlook.com2026-09-13 → 2026-09-16 · 2 obs

● 2026-09-13 21:22:04
● 2026-09-16 22:23:32

●A104.21.83.132026-09-15 → 2026-09-16 · 3 obs

○ 2026-09-13 21:22:04
● 2026-09-15 22:19:34
● 2026-09-16 22:23:32

●A172.67.166.1972026-09-15 → 2026-09-16 · 3 obs

○ 2026-09-13 21:22:04
● 2026-09-15 22:19:34
● 2026-09-16 22:23:32

○A188.114.96.02026-09-13 → 2026-09-13 · 3 obs

● 2026-09-13 21:22:04
○ 2026-09-15 22:19:34
○ 2026-09-16 22:23:32

○A188.114.97.02026-09-13 → 2026-09-13 · 3 obs

● 2026-09-13 21:22:04
○ 2026-09-15 22:19:34
○ 2026-09-16 22:23:32

●A2606:4700:3030::ac43:a6c52026-09-15 → 2026-09-16 · 3 obs

○ 2026-09-13 21:22:04
● 2026-09-15 22:19:34
● 2026-09-16 22:23:32

●A2606:4700:3031::6815:530d2026-09-15 → 2026-09-16 · 3 obs

○ 2026-09-13 21:22:04
● 2026-09-15 22:19:34
● 2026-09-16 22:23:32

○A2a06:98c1:3120::2026-09-13 → 2026-09-13 · 3 obs

● 2026-09-13 21:22:04
○ 2026-09-15 22:19:34
○ 2026-09-16 22:23:32

○A2a06:98c1:3121::2026-09-13 → 2026-09-13 · 3 obs

● 2026-09-13 21:22:04
○ 2026-09-15 22:19:34
○ 2026-09-16 22:23:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
help	a.nic.help, c.nic.help, b.nic.help, d.nic.help	-
thinkstack.help	marek.ns.cloudflare.com, donna.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.151

NS records: marek.ns.cloudflare.com, donna.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for thinkstack.help (unsigned zone)

⏱️ Timing

Total: 606ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.83.13, 172.67.166.197`
AAAA	2	`2606:4700:3030::ac43:a6c5, 2606:4700:3031::6815:530d`
NS	2	`donna.ns.cloudflare.com, marek.ns.cloudflare.com`
MX	1	`thinkstack-help.mail.protection.outlook.`
TXT	2	`MS=ms58123048, v=spf1 include:spf.protection.outlook.co`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`donna.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

thinkstack.help has four IP addresses: 104.21.83.13, 172.67.166.197, 2606:4700:3030::ac43:a6c5 and 2606:4700:3031::6815:530d.

sdlndlc.cn, qqbye.com, vetoagency.com plus two other host names have IP numbers in common with thinkstack.help.

Name Servers

thinkstack.help is served by two delegated name servers, donna.ns.cloudflare.com and marek.ns.cloudflare.com.

The name server configuration of thinkstack.help is shared with other domains, for instance calmnote.help, elementaltvmedia.co, mldr.help and two others.

thinkstack.help partially shares its NS delegation with several other domains, including tk-5566.com, liftspot.shop, delsurchevroletoficial.com.ar and two others.

These name servers are regularly seen alongside pablo.ns.cloudflare.com and adel.ns.cloudflare.com as name servers.

Hosts with 6 IP addresses each:

donna.ns.cloudflare.com carries IP addresses 108.162.192.151, 172.64.32.151 and 173.245.58.151, with 3 other addresses beyond those.

marek.ns.cloudflare.com carries IP addresses 108.162.193.202, 172.64.33.202 and 173.245.59.202, with 3 other addresses beyond those.

Mail Servers

thinkstack.help uses one mail server — thinkstack-help.mail.protection.outlook.com.

thinkstack-help.mail.protection.outlook.com has 8 IP addresses: 40.93.192.4, 52.101.41.4, 52.101.60.182 plus 5 more.

thinkstack.help - robtex.com

thinkstack.help

help

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

`thinkstack.help`

`help`