learnstack.co - dns.ninja

`learnstack.co`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:9019^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:5f62^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.95.98^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.144.25^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`dean.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b99^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dean.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c199^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`dean.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2199^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`dean.ns.cloudflare.com`
		A	108.162.193.153^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dean.ns.cloudflare.com`
		A	172.64.33.153^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dean.ns.cloudflare.com`
		A	173.245.59.153^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`dean.ns.cloudflare.com`
NS	`monika.ns.cloudflare.com`
		A	2606:4700:50::a29f:2638^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monika.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c238^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`monika.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2238^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`monika.ns.cloudflare.com`
		A	108.162.194.56^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monika.ns.cloudflare.com`
		A	162.159.38.56^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monika.ns.cloudflare.com`
		A	172.64.34.56^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`monika.ns.cloudflare.com`
TXT	`google-site-verification=CxoSdWVvgK_VT9bCPVtb-5kTSpNPUyquLUSkdUSYyWc`
TXT	`v=spf1 -all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.95.98, 172.67.144.25
		IPv6 hints	2606:4700:3033::ac43:9019, 2606:4700:3037::6815:5f62
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=38, name=cloudflare-ech.com
SOA	`dean.ns.cloudflare.com`dns@cloudflare.com serial=2410017301

`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=1759731976

Same first word

learnstack.com

learnstack.in

learnstack.co

Similar names

tasklancer.com

askcentral.co.uk

cstalnaker.com

cleantraks.net

cleankstar.shop

kasterclan.com

askcentral.net

rankcastle.com

askcentral.com

DNS History

20 records (6 active, 14 former)

●NSdean.ns.cloudflare.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-06-19 17:29:12
● 2026-03-30 18:39:26
● 2026-08-13 08:09:04

○NSdns1.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

○NSdns2.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

●NSmonika.ns.cloudflare.com2026-03-30 → 2026-08-13 · 3 obs

○ 2017-06-19 17:29:12
● 2026-03-30 18:39:26
● 2026-08-13 08:09:04

○MXeforward1.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

○MXeforward2.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

○MXeforward3.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

○MXeforward4.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

○MXeforward5.registrar-servers.com2016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

●A104.21.95.982026-03-30 → 2026-08-13 · 9 obs

○ 2017-06-19 17:29:12
● 2026-03-30 18:39:26
● 2026-06-08 16:55:04
○ 2026-06-11 07:08:36
● 2026-06-26 17:35:32
○ 2026-07-13 06:09:06
● 2026-07-27 20:36:56
○ 2026-08-03 22:46:00
● 2026-08-13 08:09:04

○A162.255.119.2482016-12-02 → 2017-06-19 · 4 obs

● 2016-12-02 01:08:10
● 2017-06-19 17:29:12
○ 2026-03-30 18:39:26
○ 2026-08-13 08:09:04

●A172.67.144.252026-03-30 → 2026-08-13 · 9 obs

○A188.114.96.02026-07-13 → 2026-08-03 · 5 obs

○ 2026-06-26 17:35:32
● 2026-07-13 06:09:06
○ 2026-07-27 20:36:56
● 2026-08-03 22:46:00
○ 2026-08-13 08:09:04

○A188.114.97.02026-07-13 → 2026-08-03 · 5 obs

○ 2026-06-26 17:35:32
● 2026-07-13 06:09:06
○ 2026-07-27 20:36:56
● 2026-08-03 22:46:00
○ 2026-08-13 08:09:04

○A2606:4700:3030::6815:5f622026-03-30 → 2026-06-26 · 7 obs

○ 2017-06-19 17:29:12
● 2026-03-30 18:39:26
● 2026-06-08 16:55:04
○ 2026-06-11 07:08:36
● 2026-06-26 17:35:32
○ 2026-07-13 06:09:06
○ 2026-08-13 08:09:04

●A2606:4700:3033::ac43:90192026-07-27 → 2026-08-13 · 4 obs

○ 2026-07-13 06:09:06
● 2026-07-27 20:36:56
○ 2026-08-03 22:46:00
● 2026-08-13 08:09:04

○A2606:4700:3036::ac43:90192026-03-30 → 2026-06-26 · 7 obs

○ 2017-06-19 17:29:12
● 2026-03-30 18:39:26
● 2026-06-08 16:55:04
○ 2026-06-11 07:08:36
● 2026-06-26 17:35:32
○ 2026-07-13 06:09:06
○ 2026-08-13 08:09:04

●A2606:4700:3037::6815:5f622026-07-27 → 2026-08-13 · 4 obs

○ 2026-07-13 06:09:06
● 2026-07-27 20:36:56
○ 2026-08-03 22:46:00
● 2026-08-13 08:09:04

○A2a06:98c1:3120::2026-07-13 → 2026-08-03 · 5 obs

○ 2026-06-26 17:35:32
● 2026-07-13 06:09:06
○ 2026-07-27 20:36:56
● 2026-08-03 22:46:00
○ 2026-08-13 08:09:04

○A2a06:98c1:3121::2026-07-13 → 2026-08-03 · 5 obs

○ 2026-06-26 17:35:32
● 2026-07-13 06:09:06
○ 2026-07-27 20:36:56
● 2026-08-03 22:46:00
○ 2026-08-13 08:09:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co	-
learnstack.co	dean.ns.cloudflare.com, monika.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.193.153

NS records: dean.ns.cloudflare.com, monika.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learnstack.co (unsigned zone)

⏱️ Timing

Total: 245ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.95.98, 172.67.144.25`
AAAA	2	`2606:4700:3033::ac43:9019, 2606:4700:3037::6815:5f62`
NS	2	`dean.ns.cloudflare.com, monika.ns.cloudflare.com`
TXT	2	`google-site-verification=CxoSdWVvgK_VT9b, v=spf1 -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`dean.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

learnstack.co has four IP addresses: 104.21.95.98, 172.67.144.25, 2606:4700:3033::ac43:9019 and 2606:4700:3037::6815:5f62.

Two other host names, along with sso.cazimbo-casino-italy.ink, f31373d3eea0.f31373d3eea0.f31373d3eea0.f31373d3eea0.f31373d3eea0.f31373d3eea0.f31373d3eea0.f31373d3eea0.welovejacksonville.com and cdzayj.com, also share IP numbers with learnstack.co.

Name Servers

learnstack.co is served by two delegated name servers, dean.ns.cloudflare.com and monika.ns.cloudflare.com.

learnstack.co shares its NS records with other domains, for example pedramol.com, upmax.eu, perjasa.org.my and two others.

learnstack.co partially shares its NS delegation with several other domains, including theaterclub.com, fivecolors.com, 3dprintlove.com and two others.

These name servers are regularly seen alongside diva.ns.cloudflare.com and jessica.ns.cloudflare.com as name servers.

DNS names with 6 IP addresses:

dean.ns.cloudflare.com carries IP addresses 108.162.193.153, 172.64.33.153 and 173.245.59.153, with 3 other addresses beyond those.

monika.ns.cloudflare.com carries IP addresses 108.162.194.56, 162.159.38.56 and 172.64.34.56, with 3 other addresses beyond those.