`stacktech.org`

DNSSEC	⚠️ Not signed
A	2606:4700::6812:143d^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700::6812:153d^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.20.61^{Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.21.61^{Cloudflare104.18.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lennox.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2cd6^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennox.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3d6^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lennox.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23d6^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lennox.ns.cloudflare.com`
		A	108.162.195.214^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennox.ns.cloudflare.com`
		A	162.159.44.214^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennox.ns.cloudflare.com`
		A	172.64.35.214^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lennox.ns.cloudflare.com`
NS	`ollie.ns.cloudflare.com`
		A	2606:4700:50::a29f:2647^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c247^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ollie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2247^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ollie.ns.cloudflare.com`
		A	108.162.194.71^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
		A	162.159.38.71^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
		A	172.64.34.71^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ollie.ns.cloudflare.com`
MX	`mx1.larksuite.com` ⭐
		A	18.139.153.173^{🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix}
			PTR	`ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com`
MX	`mx2.larksuite.com`⁽⁵⁾
		A	18.139.153.173^{🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix}
			PTR	`ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com`
MX	`mx3.larksuite.com`⁽¹⁰⁾
		A	18.139.153.173^{🇸🇬 Amazon18.138.0.0/15 EC2 SIN prefix}
			PTR	`ec2-18-139-153-173.ap-southeast-1.compute.amazonaws.com`
		A	101.126.58.223^{🇨🇳 VOLCANO-ENGINE101.126.56.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	122.14.230.154^{🇨🇳 CHINAMOBILE-CN122.14.224.0/20}
TXT	`MS=ms19758855`
TXT	`cloudflare_dashboard_sso=0a9772263b689ee0724b72d260c76c26`
TXT	`mongodb-site-verification=bSW9D10a7XOXfPvKIXj2HBrdpEPoEco3`
TXT	`v=spf1 +include:spf.onlarksuite.com -all`
TXT	`verification-code-site-App_lark=T8wLaI5u35WrtOUZjTUq`
HTTPS	HTTP/2 ✓ hints match
		IPv4	104.18.20.61, 104.18.21.61
		IPv6	2606:4700::6812:143d, 2606:4700::6812:153d
SOA	`lennox.ns.cloudflare.com`dns@cloudflare.com serial=2398972331

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1773551953

📈 Tranco rank: #138,393

Subdomains

api.stacktech.org

realtime.stacktech.org

Same first word

stacktech.org

stacktech.io

stacktech.ru

Similar names

DNS History

9 records (9 active, 0 former)

●NSlennox.ns.cloudflare.com2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●NSollie.ns.cloudflare.com2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●MXmx1.larksuite.com2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●MXmx2.larksuite.com2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●MXmx3.larksuite.com2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●A104.18.20.612026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●A104.18.21.612026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●A2606:4700::6812:143d2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

●A2606:4700::6812:153d2026-02-19 → 2026-03-15 · 2 obs

● 2026-02-19 08:04:42
● 2026-03-15 16:37:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
stacktech.org	ollie.ns.cloudflare.com, lennox.ns.cloudflare.com	-

✅ Authoritative Response

Server: 162.159.38.71

NS records: ollie.ns.cloudflare.com, lennox.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stacktech.org (unsigned zone)

⏱️ Timing

Total: 534ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.18.20.61, 104.18.21.61`
AAAA	2	`2606:4700::6812:153d, 2606:4700::6812:143d`
NS	2	`lennox.ns.cloudflare.com, ollie.ns.cloudflare.com`
MX	3	`mx1.larksuite.com (pri: 1), mx3.larksuite.com (pri: 10)...`
TXT	5	`MS=ms19758855, cloudflare_dashboard_sso=0a9772263b689ee...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`lennox.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

stacktech.org is the parent of api.stacktech.org and realtime.stacktech.org.

IP Addresses

stacktech.org maps to four IP numbers: 2606:4700::6812:143d, 2606:4700::6812:153d, 104.18.20.61 and 104.18.21.61.

other host names include dns.yktvb.com, www.orobie.it, www.cjmore.co.th, orobie.it and api.stacktech.org; they share IP numbers with stacktech.org.

Name Servers

Two name servers lennox.ns.cloudflare.com and ollie.ns.cloudflare.com handle the delegation for stacktech.org.

stacktech.org shares the same name server setup as other domains, for instance 3354797.com, unertan.com, 9006881.com, 9826642.com and 5554287.com.

stacktech.org at least partially shares name servers with other domains, for instance gamersframe.com, memerator.me, balislot88goes.us, data.be and link-harum4d87.lat.

These name servers are commonly used alongside coby.ns.cloudflare.com.

Six IP addresses per host:

lennox.ns.cloudflare.com points to 2606:4700:58::a29f:2cd6, 2803:f800:50::6ca2:c3d6, 2a06:98c1:50::ac40:23d6, 108.162.195.214, 162.159.44.214 and 172.64.35.214; ollie.ns.cloudflare.com points to 2606:4700:50::a29f:2647, 2803:f800:50::6ca2:c247, 2a06:98c1:50::ac40:2247, 108.162.194.71, 162.159.38.71 and 172.64.34.71

Mail Servers

Three mail servers handle stacktech.org: mx1.larksuite.com, mx2.larksuite.com and mx3.larksuite.com.

stacktech.org shares at least partially some mail servers with other domains, for instance care.mn, ybctwh.cc, agentlayer.xyz, lsound.info and jilian.ltd.

Host names with three IP numbers:

mx3.larksuite.com points to: 18.139.153.173, 101.126.58.223 and 122.14.230.154

Host names with one IP number:

mx1.larksuite.com points to: 18.139.153.173

mx2.larksuite.com points to: 18.139.153.173

Host names pointing to 18.139.153.173: mx3.larksuite.com, mx1.larksuite.com and mx2.larksuite.com

stacktech.org - robtex.com

stacktech.org

org

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`stacktech.org`

`org`