`stackschools.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:22b1^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:a38f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.34.177^{Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.163.143^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`clay.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b58^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c158^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`clay.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2158^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`clay.ns.cloudflare.com`
		A	108.162.193.88^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
		A	172.64.33.88^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
		A	173.245.59.88^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clay.ns.cloudflare.com`
NS	`gwen.ns.cloudflare.com`
		A	2606:4700:50::adf5:3aa0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0a0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gwen.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20a0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gwen.ns.cloudflare.com`
		A	108.162.192.160^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	172.64.32.160^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
		A	173.245.58.160^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gwen.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁸¹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁹⁷⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.34.177, 172.67.163.143
		IPv6	2606:4700:3031::6815:22b1, 2606:4700:3033::ac43:a38f
SOA	`clay.ns.cloudflare.com`dns@cloudflare.com serial=2398808850

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774591477

📈 Tranco rank: #483,374

Same first word

stackschools.com

Similar names

schoolstacks.com

DNS History

24 records (9 active, 15 former)

●NSclay.ns.cloudflare.com2026-02-18 → 2026-03-27 · 3 obs

○ 2018-07-01 14:24:36
● 2026-02-18 19:39:18
● 2026-03-27 06:25:46

●NSgwen.ns.cloudflare.com2026-02-18 → 2026-03-27 · 3 obs

○ 2018-07-01 14:24:36
● 2026-02-18 19:39:18
● 2026-03-27 06:25:46

○NSns39.domaincontrol.com2018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○NSns40.domaincontrol.com2018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

●MXroute1.mx.cloudflare.net2026-02-18 → 2026-03-27 · 2 obs

● 2026-02-18 19:39:18
● 2026-03-27 06:25:46

●MXroute2.mx.cloudflare.net2026-02-18 → 2026-03-27 · 2 obs

● 2026-02-18 19:39:18
● 2026-03-27 06:25:46

●MXroute3.mx.cloudflare.net2026-02-18 → 2026-03-27 · 2 obs

● 2026-02-18 19:39:18
● 2026-03-27 06:25:46

●A104.21.34.1772026-03-27 → 2026-03-27 · 4 obs

○ 2026-02-18 19:39:18
○ 2026-03-06 13:00:08
● 2026-03-27 02:30:14
● 2026-03-27 06:25:46

●A172.67.163.1432026-03-27 → 2026-03-27 · 4 obs

○ 2026-02-18 19:39:18
○ 2026-03-06 13:00:08
● 2026-03-27 02:30:14
● 2026-03-27 06:25:46

○A184.168.221.462018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A184.168.221.532018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A184.168.221.582018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A184.168.221.632018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A188.114.96.02026-02-18 → 2026-03-06 · 5 obs

○ 2018-07-01 14:24:36
● 2026-02-18 19:39:18
● 2026-03-06 13:00:08
○ 2026-03-27 02:30:14
○ 2026-03-27 06:25:46

○A188.114.97.02026-02-18 → 2026-03-06 · 5 obs

○ 2018-07-01 14:24:36
● 2026-02-18 19:39:18
● 2026-03-06 13:00:08
○ 2026-03-27 02:30:14
○ 2026-03-27 06:25:46

●A2606:4700:3031::6815:22b12026-03-27 → 2026-03-27 · 4 obs

○ 2026-02-18 19:39:18
○ 2026-03-06 13:00:08
● 2026-03-27 02:30:14
● 2026-03-27 06:25:46

●A2606:4700:3033::ac43:a38f2026-03-27 → 2026-03-27 · 4 obs

○ 2026-02-18 19:39:18
○ 2026-03-06 13:00:08
● 2026-03-27 02:30:14
● 2026-03-27 06:25:46

○A2a06:98c1:3120::2026-02-18 → 2026-03-06 · 5 obs

○ 2018-07-01 14:24:36
● 2026-02-18 19:39:18
● 2026-03-06 13:00:08
○ 2026-03-27 02:30:14
○ 2026-03-27 06:25:46

○A2a06:98c1:3121::2026-02-18 → 2026-03-06 · 5 obs

○ 2018-07-01 14:24:36
● 2026-02-18 19:39:18
● 2026-03-06 13:00:08
○ 2026-03-27 02:30:14
○ 2026-03-27 06:25:46

○A50.63.202.342018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A50.63.202.372018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A50.63.202.402018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A50.63.202.462018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

○A50.63.202.602018-07-01 → 2018-07-01 · 3 obs

● 2018-07-01 14:24:36
○ 2026-02-18 19:39:18
○ 2026-03-27 06:25:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
stackschools.com	clay.ns.cloudflare.com, gwen.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.160

NS records: clay.ns.cloudflare.com, gwen.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stackschools.com (unsigned zone)

⏱️ Timing

Total: 153ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.163.143, 104.21.34.177`
AAAA	2	`2606:4700:3031::6815:22b1, 2606:4700:3033::ac43:a38f`
NS	2	`clay.ns.cloudflare.com, gwen.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 45), route2.mx.cloudflare.net (pri: 81)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`clay.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (clay.ns.cloudflare.com, clay.ns.cloudflare.com, clay.ns.cloudflare.com...)

Analysis

IP Addresses

stackschools.com resolves to four IPs: 2606:4700:3031::6815:22b1, 2606:4700:3033::ac43:a38f, 104.21.34.177 and 172.67.163.143.

Other host names, for instance mimarobalife.com, maybard.com, clouds-night-3f2d.modncpnf.workers.dev, bayit-bagalil.com and megavod.com share IP numbers with stackschools.com.

Name Servers

stackschools.com has two name servers: clay.ns.cloudflare.com and gwen.ns.cloudflare.com.

stackschools.com shares the same name server setup as other domains, for example proximai.art, unpa.fr, flavoursofsrilanka.lk, kacn.org and kosfa.or.kr.

stackschools.com shares some name servers with other domains, for example bestchairreview.com, redteacreative.com, polarworx.com, ylscmihqxrrda.global and bibanon.org.

These name servers are commonly used with the name servers ulla.ns.cloudflare.com.

Host names with six IP numbers: clay.ns.cloudflare.com points to: 2606:4700:58::adf5:3b58, 2803:f800:50::6ca2:c158, 2a06:98c1:50::ac40:2158, 108.162.193.88, 172.64.33.88 and 173.245.59.88; gwen.ns.cloudflare.com points to: 2606:4700:50::adf5:3aa0, 2803:f800:50::6ca2:c0a0, 2a06:98c1:50::ac40:20a0, 108.162.192.160, 172.64.32.160 and 173.245.58.160.

Mail Servers

stackschools.com is handled by three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

stackschools.com shares some mail servers with other domains, at least partially; for instance olympicprecisionmachiningopmsrl.com, altiviewcrew.com, guiasitios.cl, brosz.org and acellerys.com.

Host names with six IP numbers:

route1.mx.cloudflare.net points to 2606:4700:f5::b, 2606:4700:f5::c, 2606:4700:f5::d, 162.159.205.11, 162.159.205.12 and 162.159.205.13

route2.mx.cloudflare.net points to 2606:4700:f5::e, 2606:4700:f5::f, 2606:4700:f5::10, 162.159.205.17, 162.159.205.18 and 162.159.205.19

route3.mx.cloudflare.net points to 2606:4700:f5::11, 2606:4700:f5::12, 2606:4700:f5::13, 162.159.205.23, 162.159.205.24 and 162.159.205.25

stackschools.com - robtex.com